APARTMENT INCOME REIT, L.P., 10-K filed on 3/19/2025
Annual Report
v3.25.1
Cover - USD ($)
12 Months Ended
Dec. 31, 2024
Mar. 10, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 0-24497    
Entity Registrant Name APARTMENT INCOME REIT, L.P.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 84-1275621    
Entity Address, Address Line One 345 Park Avenue    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10154    
City Area Code 212    
Local Phone Number 583-5000    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   1,579  
Documents Incorporated by Reference
None.
   
Entity Central Index Key 0000926660    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Public Float     $ 0
v3.25.1
Audit Information
12 Months Ended
Dec. 31, 2024
Audit Information [Abstract]  
Auditor Location Denver, Colorado
Auditor Name DELOITTE & TOUCHE LLP
Auditor Firm ID 34
v3.25.1
CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
ASSETS    
Buildings and improvements $ 6,501,386 $ 6,324,857
Land 1,297,106 1,285,710
Total real estate 7,798,492 7,610,567
Accumulated depreciation (2,503,088) (2,245,589)
Net real estate 5,295,404 5,364,978
Cash and cash equivalents 616,452 91,401
Restricted cash 28,007 26,090
Investment in unconsolidated real estate partnerships 341,357 336,077
Goodwill 32,286 32,286
Other assets, net 262,036 283,920
Total assets 6,575,542 6,134,752
LIABILITIES AND PARTNERS’ (DEFICIT) CAPITAL    
Non-recourse property debt, net 6,241,869 2,223,791
Term loans, net 0 473,701
Revolving credit facility borrowings 0 115,000
Unsecured notes payable, net 0 397,852
Total indebtedness 6,241,869 3,210,344
Accrued liabilities and other 309,137 296,894
Total liabilities 6,551,006 3,507,238
Commitments and contingencies (Note 8)
Redemption values 56,827 77,140
Partners’ (deficit) capital:    
Preferred units 0 2,000
General Partner and Special Limited Partner (61,484) 2,349,896
Limited Partners 126,848 284,451
Partners’ capital attributable to the AIR Operating Partnership 65,364 2,636,347
Noncontrolling interests in consolidated real estate partnerships (97,655) (85,973)
Total partners’ (deficit) capital (32,291) 2,550,374
Total liabilities, redeemable preferred units, and partners’ (deficit) capital $ 6,575,542 $ 6,134,752
v3.25.1
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
REVENUES      
Total revenues $ 800,601 $ 820,036 $ 773,723
EXPENSES      
Property operating expenses 241,712 244,095 231,791
Property management expenses 33,958 31,737 29,473
Depreciation and amortization 325,362 342,593 350,945
General and administrative expenses 29,766 25,494 24,939
Other expenses, net 75,992 25,889 9,073
Operating expenses 706,790 669,808 646,221
Interest income 16,577 8,314 50,264
Interest expense (260,388) (129,654) (116,459)
Loss on extinguishment of debt (36,888) (2,008) (23,636)
Gain on dispositions of real estate and impairments of real estate, net 3,951 677,740 939,806
Gain on derivative instruments, net 11,235 16,742 0
Loss from unconsolidated real estate partnerships (17,035) (29,648) (3,504)
Merger-related costs (169,409) 0 0
(Loss) income before income tax benefit (expense) (358,146) 691,714 973,973
Income tax benefit (expense) 2,304 (2,427) (3,923)
Net (loss) income (355,842) 689,287 970,050
Net income attributable to noncontrolling interests in consolidated real estate partnerships (5,270) (5,185) (458)
Net (loss) income attributable to the AIR Operating Partnership (361,112) 684,102 969,592
Net income attributable to the AIR Operating Partnership's preferred unitholders (5,973) (6,452) (6,560)
Net loss (income) attributable to participating securities 66 (485) (618)
Net (loss) income attributable to the AIR Operating Partnership’s common unitholders $ (367,019) $ 677,165 $ 962,414
Net (loss) income attributable to the AIR Operating Partnership common unitholders per unit – basic (in dollars per share) $ (2.38) $ 4.29 $ 5.86
Net (loss) income attributable to the AIR Operating Partnership common unitholders per unit – diluted (in dollars per share) $ (2.38) $ 4.27 $ 5.81
Weighted-average common units outstanding – basic (in shares) 154,016 157,687 164,141
Weighted-average common units outstanding – diluted (in shares) 154,016 160,008 166,635
Rental and other property revenues      
REVENUES      
Total revenues $ 785,507 $ 809,875 $ 764,192
Other revenues      
REVENUES      
Total revenues $ 15,094 $ 10,161 $ 9,531
v3.25.1
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Comprehensive Income [Abstract]      
Net (loss) income $ (355,842) $ 689,287 $ 970,050
Unrealized gain on derivative instruments, net 0 2,955 47,049
Reclassification of interest rate derivative (gain) loss to net (loss) income (15,464) (25,823) 273
Comprehensive (loss) income (371,306) 666,419 1,017,372
Comprehensive income attributable to noncontrolling interests (5,270) (5,185) (458)
Comprehensive (loss) income attributable to the AIR Operating Partnership $ (376,576) $ 661,234 $ 1,016,914
v3.25.1
CONSOLIDATED STATEMENTS OF PARTNERS’ (DEFICIT) CAPITAL - USD ($)
$ in Thousands
Total
Common Partnership Units
Preferred Partnership Units
Preferred Units
Preferred Units
Preferred Partnership Units
General Partner and Special Limited Partner
Limited Partners
Limited Partners
Common Partnership Units
Partners' Capital Attributable to the AIR Operating Partnership
Partners' Capital Attributable to the AIR Operating Partnership
Common Partnership Units
Partners' Capital Attributable to the AIR Operating Partnership
Preferred Partnership Units
Noncontrolling Interests in Consolidated Real Estate Partnerships
Beginning balance at Dec. 31, 2021 $ 1,939,155     $ 2,129   $ 1,810,896 $ 197,013   $ 2,010,038     $ (70,883)
Increase (Decrease) in Partners' Capital [Roll Forward]                        
Redemption and repurchase of common partnership units (327,884)         (316,710) (11,174)   (327,884)      
Conversion of common partnership units 0         119 (119)          
Amortization of share-based compensation cost 7,966         4,270 3,696   7,966      
Effect of changes in ownership of consolidated entities 0         (7,791) 7,791          
Purchase of noncontrolling interests in consolidated real estate partnerships (5,409)         (5,529)     (5,529)     120
Contributions from noncontrolling interests in consolidated real estate partnerships 9,206                     9,206
Other comprehensive income (loss) 47,322         43,562 3,760   47,322      
Net income (loss) 963,662         904,432 58,772   963,204     458
Distributions to common unitholders (295,460)         (277,639) (17,821)   (295,460)      
Distributions to noncontrolling interests (17,623)                     (17,623)
Other, net (1,629)     (129)   (1,193) (244)   (1,566)     (63)
Ending balance at Dec. 31, 2022 2,319,306     2,000   2,154,417 241,674   2,398,091     (78,785)
Increase (Decrease) in Partners' Capital [Roll Forward]                        
Redemption and repurchase of common partnership units (167,463)         (148,956) (18,507)   (167,463)      
Issuance of common partnership units 22,383           22,383   22,383      
Amortization of share-based compensation cost 9,296         4,488 4,808   9,296      
Effect of changes in ownership of consolidated entities 1,113         (8,260) 10,771   2,511     (1,398)
Purchase of noncontrolling interests in consolidated real estate partnerships (1,517)         479     479     (1,996)
Contributions from noncontrolling interests in consolidated real estate partnerships 5,691                     5,691
Other comprehensive income (loss) (22,868)         (21,170) (1,698)   (22,868)      
Net income (loss) 683,007         635,101 42,721   677,822     5,185
Distributions to common unitholders (284,126)         (266,422) (17,704)   (284,126)      
Distributions to noncontrolling interests (14,376)                     (14,376)
Other, net (72)         219 3   222     (294)
Ending balance at Dec. 31, 2023 2,550,374     2,000   2,349,896 284,451   2,636,347     (85,973)
Increase (Decrease) in Partners' Capital [Roll Forward]                        
Redemption and repurchase of common partnership units   $ (32,152) $ (2,000)   $ (2,000)     $ (32,152)   $ (32,152) $ (2,000)  
Amortization of share-based compensation cost 23,657         11,843 11,814   23,657      
Effect of changes in ownership of consolidated entities 0         (24,119) 24,119          
Other comprehensive income (loss) (15,464)         (14,255) (1,209)   (15,464)      
Net income (loss) (361,678)         (343,791) (23,157)   (366,948)     5,270
Merger-related distributions (2,105,949)         (1,976,696) (129,253)   (2,105,949)      
Distributions to common unitholders (72,414)         (64,649) (7,765)   (72,414)      
Distributions to noncontrolling interests (17,552)                     (17,552)
Other, net 887         287     287     600
Ending balance at Dec. 31, 2024 $ (32,291)     $ 0   $ (61,484) $ 126,848   $ 65,364     $ (97,655)
v3.25.1
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net (loss) income $ (355,842) $ 689,287 $ 970,050
Adjustments to reconcile net (loss) income to net cash provided by operating activities:      
Depreciation and amortization 325,362 342,593 350,945
Gain on dispositions of real estate, impairments of real estate, net (3,951) (677,740) (939,806)
Loss on extinguishment of debt 36,888 2,008 23,636
Income tax (benefit) expense (2,304) 2,427 3,923
Write-off of pre-development, development, and redevelopment costs 14,329 0 0
Share-based compensation expense 22,931 8,874 7,463
Amortization of debt issuance costs 14,084 5,821 5,522
Other, net 28,456 23,410 (2,327)
Other assets, net 19,462 5,338 27,864
Accrued liabilities and other 11,726 (31,618) (26,713)
Total adjustments 466,983 (318,887) (549,493)
Net cash provided by operating activities 111,141 370,400 420,557
CASH FLOWS FROM INVESTING ACTIVITIES:      
Purchases of real estate and deposits related to purchases of real estate (249,572) (346,626) (861,320)
Capital expenditures (147,328) (173,662) (192,404)
Distributions from unconsolidated real estate partnerships 27,470 207,101 0
Initial contributions to unconsolidated real estate partnerships 0 (51,836) 0
Proceeds from dispositions of real estate 1,193 52,066 1,209,241
Purchase of corporate assets (10,970) (15,862) (13,940)
Proceeds from repayment of note receivable 0 0 534,127
Other investing activities, net (5,929) 15,757 (25,447)
Net cash (used in) provided by investing activities (385,136) (313,062) 650,257
CASH FLOWS FROM FINANCING ACTIVITIES:      
Proceeds from non-recourse property debt, net 7,688,718 1,005,920 54,156
Principal repayments on non-recourse property debt (3,577,733) (119,508) (449,535)
Repayment of term loans (475,000) (325,000) (350,000)
(Repayments of) issuance of unsecured notes payable (400,000) 0 400,000
Net (repayments of) borrowings on revolving credit facility (115,000) (347,000) 159,205
Payment of deferred loan costs (28,400) (10,894) (4,872)
Payment of debt extinguishment costs (11,659) (1,115) (22,680)
Merger-related distributions, net (2,105,949) 0 0
Redemption of common and preferred OP units (53,236) (18,507) (13,394)
Payment of distributions to General Partner and Special Limited Partner (64,649) (266,140) (277,551)
Payment of distributions to Limited Partners (7,765) (18,108) (17,849)
Payment of distributions to noncontrolling interests (17,552) (14,377) (17,623)
Repurchases of common partnership units held by General Partner and Special Limited Partner (24,596) (124,361) (316,710)
Redemption of preferred units (2,000) 0 0
Other financing activities, net (4,216) (2,162) (5,317)
Net cash provided by (used in) financing activities 800,963 (241,252) (862,170)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH 526,968 (183,914) 208,644
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD 117,491 301,405 92,761
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD 644,459 117,491 301,405
SUPPLEMENTAL CASH FLOW INFORMATION:      
Interest paid, net of amounts capitalized 245,965 128,431 114,340
Cash paid for income taxes 1,044 5,720 5,528
Non-cash transactions associated with the acquisition or disposition of real estate:      
Non-recourse property debt assumed in connection with the acquisition of real estate 0 101,215 0
Issuance of common OP Units in connection with acquisition of real estate 0 22,383 0
Investment in unconsolidated real estate partnerships for contribution of real estate 30,976 270,730 0
Other non-cash transactions:      
Recognition of right-of-use lease assets 0 0 80,651
Recognition of lease liabilities 0 0 80,651
Accrued capital expenditures (at end of period) 6,120 5,287 10,701
Accrued repurchases of common partnership units (at end of period) $ 0 $ 24,595 $ 0
v3.25.1
Basis of Presentation and Organization
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Basis of Presentation and Organization Basis of Presentation and Organization
Basis of Presentation
The accompanying consolidated financial statements include the accounts of Apartment Income REIT, L.P. (“AIR Operating Partnership” or the “Operating Partnership”), and its consolidated subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
As used herein, and except where the context otherwise requires, “partnership” refers to a limited partnership or a limited liability company and “partner” refers to a partner in a limited partnership or a member of a limited liability company. Interests in partnerships consolidated by the AIR Operating Partnership that are held by third parties are reflected in AIR Operating Partnership’s accompanying consolidated balance sheets as noncontrolling interests in consolidated real estate partnerships. Net income (loss) and other comprehensive income (loss) are allocated to each partner's capital account.
Except as the context otherwise requires, “we,” “our,” and “us” refer to the AIR Operating Partnership and its consolidated subsidiaries, collectively.
Reclassifications
Certain prior period balances in the consolidated statements of operations, statements of cash flows, statements of partners' (deficit) capital, and the notes to the consolidated financial statements have been combined or reclassified to conform to current period presentation. These changes had no impact on net (loss) income, cash flows, assets and liabilities, or partners’ (deficit) capital previously reported.
Organization and Business
We are focused on the ownership of stabilized multi-family properties located in top markets including eight important geographic concentrations: Boston; Philadelphia; Washington, D.C.; Miami; Denver; the San Francisco Bay Area; Los Angeles; and San Diego.
We own and operate a portfolio of stabilized apartment communities, diversified by both geography and price point, in 10 states and the District of Columbia. As of December 31, 2024, our portfolio included 77 apartment communities with 27,395 apartment homes, in which we held an average ownership of approximately 81%. Any references to the number of apartment communities and homes, square footage, or occupancy percentage in these notes to our consolidated financial statements are unaudited.
Interests held by the General Partner and Special Limited Partner, and other Limited Partners in the AIR Operating Partnership are referred to as OP Units. OP Units include common partnership units (inclusive of Class I High Performance Partnership Units), which we refer to as “common OP Units,” as well as preferred partnership units, which we refer to as “preferred OP Units.” As of December 31, 2024, after elimination of units held by consolidated subsidiaries, the AIR Operating Partnership had 156,221,778 common OP Units and equivalents legally outstanding.
v3.25.1
Summary of Significant Accounting Policies
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Significant Accounting Policies Summary of Significant Accounting Policies
Principles of Consolidation
We consolidate variable interest entities (“VIE”), in which we are considered the primary beneficiary. The primary beneficiary is the entity that has (i) the power to direct the activities that most significantly impact the entity’s economic performance, and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE. As of December 31, 2024 and 2023, the AIR Operating Partnership consolidated four VIE. Please see Note 13 for further discussion regarding our consolidated VIE.
Real Estate
Acquisitions
Upon the acquisition of real estate, we determine whether the purchase qualifies as an asset acquisition or meets the definition of an acquisition of a business. We generally recognize the acquisition of apartment communities or interests in partnerships that own communities at our cost, including the related transaction costs, as asset acquisitions.
We allocate the cost of apartment communities acquired based on the relative fair value of the assets acquired and liabilities assumed. The fair value of these assets and liabilities is determined using valuation techniques that rely on Level 2 and Level 3 inputs within the fair value framework. We determine the fair value of tangible assets, such as land, buildings, furniture, fixtures, and equipment using valuation techniques that consider comparable market transactions, replacement costs, and other available information. We determine the fair value of identified intangible assets or liabilities, which typically relate to in-place leases, using valuation techniques that consider the terms of the in-place leases, current market data for comparable leases, and our experience in leasing similar communities.
The intangible assets or liabilities related to in-place leases are comprised of: (a) the value of the above- and below-market leases in-place, measured over the period, including probable lease renewals for below-market leases, that the leases are expected to remain in effect; (b) the estimated unamortized portion of avoided leasing commissions and other costs that ordinarily would be incurred to originate the in-place leases; and (c) the value associated with leased apartment homes during an estimated absorption period, which estimates rental revenue that would not have been earned had leased apartment homes been vacant at the time of acquisition, assuming lease-up periods based on market demand and stabilized occupancy levels. The above- and below-market lease intangibles are amortized to rental revenue over the expected remaining terms of the associated leases, which include reasonably assured renewal periods. Other intangible assets related to in-place leases are amortized to depreciation and amortization over the expected remaining terms of the associated leases.
Capital Additions
We capitalize costs, including certain indirect costs, incurred in connection with our capital additions activities, including tangible apartment community improvements and replacements of existing apartment community components. Costs, including ordinary repairs, maintenance, and resident turnover costs, are charged to property operating expense as incurred.
For the years ended December 31, 2024, 2023, and 2022, we capitalized to buildings and improvements $13.3 million, $16.2 million, and $16.6 million of indirect costs, respectively.
Dispositions
A property is classified as held for sale when all of the following criteria for a plan of sale have been met: (i) management, having the authority to approve the action, commits to a plan to sell the asset or disposal group; (ii) the asset or disposal group is available for immediate sale in its present condition, subject only to terms that are usual and customary; (iii) an active program to locate a buyer and other actions required to complete the plan to sell the asset or disposal group have been initiated; (iv) the sale of the asset or disposal group is probable and is expected to be completed within one year; (v) the asset or disposal group is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and (vi) actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn, which is typically indicated by receipt of all non-refundable deposits from the buyer pursuant to a sales contract. Depreciation of assets ceases upon designation of a property as held for sale.
For sales of real estate, we evaluate whether the disposition represents a strategic shift that has, or will have, a major effect on our operations and financial results. If so, it is classified as discontinued operations in our consolidated financial statements for all periods presented. If not, it is presented in continuing operations in our consolidated financial statements. The disposal of an individual property generally will not represent a strategic shift that has a major effect, and therefore will typically not meet the criteria for classification as a discontinued operations.
Gain or loss on real estate dispositions are recognized when we no longer hold a controlling financial interest in the real estate and sufficient consideration has been received. Upon disposition, the related assets and liabilities are derecognized, and the gain or loss on disposition is recognized as the difference between the carrying amount of those assets and liabilities and the value of consideration received.
Impairment
Real estate and other long-lived assets to be held and used are individually evaluated for impairment when conditions exist that may indicate the carrying amount of a long-lived asset may not be recoverable. We use the held for sale impairment model for properties classified as held for sale, whereby an impairment charge is recognized if the carrying amount of the long-lived asset classified as held for sale exceeds its fair value less cost to sell. If an impairment indicator exists, we compare the asset’s expected future undiscounted cash flows to its current carrying value to assess whether impairment measurement is necessary. Upon determination that an impairment has occurred, we recognize an impairment loss to the extent the carrying amount exceeds the estimated fair value of the real estate and other long-lived assets.
The measurement of impairment is based on the fair value of the community and incorporates various estimates, assumptions, and market data, the most significant being rental rates, operating expense assumptions, expected hold period, capitalization rate, and purchase and sale agreements. We project future rental revenue growth rates using forecasted rates from third-party market research analytics. Property expense growth rates and capitalization rates are based on the apartment communities’ historical, current, and expected future operating results, existing operating expense assumptions, and operational strategies. These projections are adjusted to reflect current economic conditions and require considerable management judgment.
We did not recognize any such impairment during the years ended December 31, 2024 and 2022. During 2023, we recognized a non-cash impairment loss on real estate of $23.6 million.
Cash and Cash Equivalents
We classify highly liquid investments with an original maturity of three months or less as cash equivalents. We maintain cash equivalents in financial institutions in excess of insured limits. We have not experienced any losses in these accounts in the past and believe that we are not exposed to significant credit risk because our accounts are deposited with major financial institutions.
Restricted Cash
As of December 31, 2024 and 2023, restricted cash primarily consists of capital replacement reserves, real estate tax and insurance escrow accounts held by lenders, and resident security deposits.
Goodwill
As of December 31, 2024 and 2023, goodwill associated with our reportable segments totaled $32.3 million. We perform an impairment test of goodwill annually, or when an interim triggering event occurs, by evaluating qualitative and quantitative factors, if necessary, to determine the likelihood that goodwill may be impaired. As a result of our annual impairment test, we determined that our goodwill was not impaired during the years ended December 31, 2024, 2023, and 2022.
Accrued Liabilities and Other
As of December 31, 2024 and 2023, accrued liabilities and other was comprised of the following amounts (in thousands):
20242023
Lease liability
$137,318 $135,637 
Accrued expenses and other
171,819 161,257 
Total accrued liabilities and other$309,137 $296,894 
Investment in Unconsolidated Real Estate Partnerships
We may own general and limited partner interests in partnerships that either directly, or through interests in other real estate partnerships, own apartment communities. We generally account for investments in real estate partnerships that we do not consolidate under the equity method. Under the equity method, we recognize our share of the earnings or losses of the entity for the periods presented, inclusive of our share of any impairments and disposition gains or losses recognized by and related to such entities, and we present such amounts within loss from unconsolidated real estate partnerships in our consolidated statements of operations. Investment in unconsolidated real estate partnerships is included as a separate line item in our consolidated balance sheets.
Investments in unconsolidated real estate partnerships are reviewed for impairments. An impairment loss is recorded when there is a decline in the fair value below the carrying value and we conclude such decline is other-than-temporary. An impairment loss is measured based on the excess of the carrying amount of an investment over its estimated fair value. We determine the fair value of investments in unconsolidated real estate partnerships using valuation techniques that consider the terms of the in-place leases, current market data for comparable leases, our experience in leasing similar communities, and current plans. We recognized no such impairments for the years ended December 31, 2024, 2023, and 2022.
The excess of our cost of the acquired partnership interests over our share of the partners’ equity or deficit are included as a part of our investments in unconsolidated real estate partnerships. We amortize the excess cost over the term of the joint venture agreement. The amortization is recorded as an adjustment of the amounts of earnings or losses we recognize from such unconsolidated real estate partnerships. Please see Note 7 for further discussion regarding our investment in unconsolidated real estate partnerships.
Noncontrolling Interests in Consolidated Real Estate Partnerships
We generally report the unaffiliated partners’ interests in the net assets of our consolidated real estate partnerships as noncontrolling interests in consolidated real estate partnerships within the consolidated statements of partners’ (deficit) capital. If a real estate partnership includes redemption rights that are not within the AIR Operating Partnership’s control, the noncontrolling interest is included as temporary equity.
The assets of real estate partnerships consolidated by the AIR Operating Partnership must first be used to settle the liabilities of such consolidated real estate partnerships. These consolidated real estate partnerships’ creditors do not have recourse to the general credit of the AIR Operating Partnership.
Noncontrolling interests in consolidated real estate partnerships consist primarily of equity interests held by limited partners in consolidated real estate partnerships that have finite lives. We generally attribute to noncontrolling interests their share of income or loss of consolidated partnerships based on their proportionate interest in the results of operations of the partnerships, including their share of losses even if such attribution results in a deficit noncontrolling interest balance within our partners’ (deficit) capital accounts.
The terms of the related partnership agreements generally require the partnerships to be liquidated following the sale of the underlying real estate. As the general partner in these partnerships, we ordinarily control the execution of real estate sales and other events that could lead to the liquidation, redemption or other settlement of noncontrolling interests.
Changes in our ownership interest in consolidated real estate partnerships generally consist of our purchase of an additional interest in or the sale of our entire or partial interest in a consolidated real estate partnership. The effect on our partners’ (deficit) capital of our purchase of additional interests in consolidated real estate partnerships during the years ended December 31, 2024, 2023, and 2022, is shown in our consolidated statements of partners’ (deficit) capital. The effect on our partners’ (deficit) capital of sales of consolidated real estate or sales of our entire interest in consolidated real estate partnerships is reflected in our consolidated statements of operations as gains or losses on dispositions of real estate and accordingly the effect on our partners’ (deficit) capital is reflected within the amount of net (loss) income allocated to us and to noncontrolling interests. Upon our deconsolidation of a real estate partnership following the sale of our partnership interests or liquidation of the partnership following sale of the related apartment community, we derecognize any remaining noncontrolling interest of the associated partnership previously recorded in our consolidated balance sheets.
Noncontrolling Interests in the AIR Operating Partnership
Noncontrolling interests in the AIR Operating Partnership consist of common OP Units held by limited partners and preferred OP Units. Holders of preferred OP Units participate in the AIR Operating Partnership’s income or loss only to the extent of their preferred distributions. The AIR Operating Partnership’s income or loss is allocated to the holders of common OP Units based on the weighted-average number of common OP Units outstanding during the period. During the years ended December 31, 2024, 2023, and 2022, common OP Units held by limited partners had a weighted-average economic ownership interest in the AIR Operating Partnership of 6.14%, 6.37%, and 6.25%, respectively. Please refer to Note 9 for further information regarding the items comprising noncontrolling interests in the AIR Operating Partnership.
Revenue from Leases
We are a lessor primarily for residential leases. Our operating leases with residents may also provide that the resident reimburse us for certain costs, primarily the resident’s share of utilities expenses, incurred by the apartment community. These reimbursements represent revenue attributable to nonlease components for which the timing and pattern of recognition is the same as the revenue for the lease components. We use the practical expedient that allows us to account for the lease and nonlease components as a single component. Reimbursement and related expense are presented on a gross basis in our consolidated statements of operations, with the reimbursement included in rental and other property revenues attributable to real estate in our consolidated statements of operations. We recognize rental revenue attributed to lease components, net of any concessions, on a straight-line basis over the term of the lease.
Insurance
We believe our insurance coverages insure our apartment communities adequately against the risk of loss attributable to fire, earthquake, hurricane, tornado, flood, and other perils. In addition, we have third-party insurance coverage (after self-insured retentions) that defray the costs of large workers’ compensation, health, and general liability exposures. We accrue losses based upon our estimates of the aggregate liability for uninsured losses incurred using certain actuarial assumptions followed in the insurance industry and based on our experience.
Depreciation and Amortization
Depreciation for all tangible assets is calculated using the straight-line method over their estimated useful life. Acquired buildings and improvements are depreciated over a useful life based on the age, condition, and other physical characteristics of the asset. Furniture, fixtures, and equipment are generally depreciated over five years.
We depreciate capitalized costs using the straight-line method over the estimated useful life of the related improvement, which is generally 5, 15, or 30 years.
Purchased software and other costs related to software purchased or developed for internal use are capitalized during the application development stage and are amortized using the straight-line method over the estimated useful life of the software, generally three to ten years. Purchased equipment is recognized at cost and depreciated using the straight-line method over the estimated useful life of the asset, which is generally five years. Leasehold improvements are also recorded at cost and depreciated on a straight-line basis over the shorter of the asset’s estimated useful life or the term of the related lease.
Certain homogeneous items that are purchased in bulk on a recurring basis, such as appliances, are depreciated using group methods that reflect the average estimated useful life of the items in each group. Except in the case of apartment community casualties, where the net book value of the lost asset is written off in the determination of casualty gains or losses, we generally do not recognize any loss in connection with the replacement of an existing apartment community component because normal replacements are considered in determining the estimated useful life used in connection with our composite and group depreciation methods.
Share-Based Compensation
During 2024, we granted restricted stock awards with a weighted-average grant date fair value of $36.81 per unit, and we did not grant any stock options during 2024. On June 28, 2024, AIR completed the Merger Agreement, and as a result, all outstanding stock options and restricted stock awards were cancelled, resulting in the acceleration of share-based compensation. As of December 31, 2024, there were no stock options or restricted stock awards outstanding.
During 2024, we granted LTIP I units with a weighted-average grant date fair value of $40.59 per unit, and we did not grant any LTIP II units during 2024. In connection with the resignation of Terry Considine, certain LTIP units held by Mr. Considine vested, with all remaining unvested LTIP units being forfeited, resulting in the acceleration of share-based compensation. All vested LTIP I units were converted into common OP Units during the fourth quarter of 2024. As of December 31, 2024, there are 2,562,284 vested LTIP II units outstanding at a weighted-average grant date fair value of $9.81 per unit. Refer to Note 4 for further discussion on the departure of certain executive officers and distributions.
Total compensation cost recognized for share-based awards was as follows for the years ended December 31, 2024, 2023, and 2022 (in thousands):
202420232022
Share-based compensation expense (1)$22,931 $8,874 $7,463 
Capitalized share-based compensation (2)726 422 503 
Total share-based compensation
$23,657 $9,296 $7,966 
(1)During the year ended December 31, 2024, amounts are recorded in general and administrative expenses, property management expenses, other expenses, net, and merger-related costs in our consolidated statements of operations. During the years ended December 31, 2023 and 2022, amounts are recorded in general and administrative expenses and property management expenses in our consolidated statements of operations.
(2)Amounts are recorded in building and improvements in our consolidated balance sheets.
Refer to Note 3 and Note 4 for further discussion regarding the Blackstone transaction.
Income Taxes
The AIR Operating Partnership is a partnership for federal income tax purposes and as such is not subject to federal income tax. The state and local tax laws may not conform to the United States federal income tax treatment, and AIR Operating Partnership may be subject to state or local taxation in various state or local jurisdictions, including those in which we transact business. Any taxes imposed on us reduce our operating cash flow and net (loss) income.
Certain of our operations, or a portion thereof, including certain property management and risk management activities, are conducted through taxable REIT subsidiaries, which are subsidiaries of the AIR Operating Partnership, and each of which we refer to as a TRS. A TRS is a corporate subsidiary that has elected to be a TRS instead of a REIT and, as such, is subject to United States federal corporate income tax. We use TRS entities to facilitate our ability to offer certain services and activities to our residents and investment partners that cannot be offered directly by a REIT.
For our TRS entities, deferred income taxes result from temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts reported for United States federal income tax purposes, and are measured using the enacted tax rates and laws that are expected to be in effect when the differences reverse. We reduce deferred tax assets by recording a valuation allowance when we determine, based on available evidence, that it is more likely than not that the assets will not be realized. We recognize the tax consequences associated with intercompany transfers between the AIR Operating Partnership and TRS entities when such transactions occur.
Earnings per Unit
We calculate earnings per unit based on the weighted-average number of common OP Units, common unit equivalents, and dilutive convertible securities outstanding during the period. The AIR Operating Partnership considers both common OP Units and equivalents, which have identical rights to distributions and undistributed earnings, to be common units for purposes of the earnings per unit computations. Please refer to Note 10 for further information regarding earnings per unit computations.
Use of Estimates
The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts included in the consolidated financial statements and accompanying notes thereto. Actual results could differ from those estimates.
Accounting Pronouncements Recently Issued
In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2024-03, "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures," which requires disaggregated information surrounding entity's expenses. The standard is intended to benefit investors by providing more detailed information about the types of expenses in commonly presented expenses captions. This ASU is effective for public companies with annual periods beginning after December 15, 2026, and interim periods beginning after
December 15, 2027, with early adoption permitted. We are currently evaluating the guidance and its impact to the consolidated financial statements.
Accounting standards that have been issued by the FASB, or other standards-setting bodies, that are not yet effective or discussed above are not expected to have a material impact on our consolidated financial statements upon adoption.
v3.25.1
Blackstone Transaction
12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Blackstone Transaction Blackstone Transaction
Merger Agreement
On June 28, 2024, AIR completed the transactions contemplated by the Agreement and Plan of Merger (the “Merger Agreement”) by and among AIR, Apex Purchaser LLC, a Delaware limited liability company (“Buyer 1”), Aries Purchaser LLC, a Delaware limited liability company (“Buyer 2”), Astro Purchaser LLC, a Delaware limited liability company (“Buyer 3” and, together with Buyer 1 and Buyer 2, collectively, the “Parent Entities”), and Astro Merger Sub, Inc., a Maryland corporation and a wholly owned subsidiary of the Parent Entities (“Merger Sub” and, together with the Parent Entities, the “Parent Parties”). The Parent Parties are affiliates of Blackstone Real Estate Partners X L.P., which is an affiliate of Blackstone Inc. (“Blackstone”). At the closing of the transactions contemplated by the Merger Agreement on June 28, 2024 (the “Closing”), Merger Sub merged with and into AIR (the “Merger”). As a result of the Merger, AIR became a subsidiary of the Parent Entities.
Pursuant to the terms and conditions of the Merger Agreement, among other things:
Change of Control: Upon Closing, affiliates of Blackstone, indirectly through the Parent Parties, control the General Partner and Special Limited Partner of the AIR Operating Partnership.
Share-Based Awards: All stock options and restricted stock awards outstanding immediately prior to Closing, whether vested or unvested, were cancelled and converted into the right to receive cash amounting to $25.7 million in total, as determined pursuant to the applicable stock awards and incentive plans and agreements and in accordance with the terms and conditions of the Merger Agreement (with any performance goals applicable to such company stock option measured at the greater of target level performance and actual performance through the date of Closing). The $25.7 million was paid in the third quarter of 2024.
During the second quarter of 2024, the cancellation of the restricted stock awards resulted in the acceleration of share-based compensation expense of $8.6 million, which is recorded in merger-related costs within the consolidated statements of operations. Of the $8.6 million acceleration, $5.2 million and $3.4 million would have been recorded within general and administrative expenses and property management expenses in our consolidated statements of operations, respectively, through January 2028.
Preferred Units: All Class A preferred stock outstanding immediately prior to the Closing were redeemed by AIR at a redemption price payable in cash of $100,000 per unit, which resulted in the mirrored preferred units at the AIR Operating Partnership to be cancelled. During the second quarter of 2024, cancellation of the mirrored preferred units resulted in a cash payment of $2.0 million, which was paid in June 2024 in conjunction with the Closing. As of December 31, 2024, the Operating Partnership has no mirrored preferred units outstanding.
Treatment of Partnership Units
The issued and outstanding equity interests of the AIR Operating Partnership, including the common OP units, preferred OP units, and LTIP units were unaffected by the Merger and remain issued and outstanding and continue to have the rights and privileges set forth in the Partnership Agreement.
Merger-related costs
In conjunction with the Merger, and during the year ended December 31, 2024, we incurred cost of $169.4 million which is included in merger-related costs in our consolidated statements of operations. The merger-related costs primarily consist of regulatory, advisory, legal, consulting, banking services, loan assumption fees, and the acceleration of share-based compensation related to the cancellation of the stock options and restricted stock awards discussed above.
Amendments to the Seventh Amended and Restated Agreement of Limited Partnership of the AIR Operating Partnership
On June 25, 2024, AIR Operating Partnership’s general partner adopted Amendment No. 1 (the “Amendment No. 1”) to the Partnership Agreement to provide that, following the Closing:
the AIR Operating Partnership will pay only cash to those holders of units in the AIR Operating Partnership who elect to redeem their units in accordance with the terms of the Partnership Agreement (and will not exercise its right to pay for such redeemed units in the AIR Operating Partnership in shares of the Class A Common Stock);
any of the common OP Units redeemed on the date of Closing or within ten (10) days thereafter (the “Initial Post-Closing Period”) will be valued at an amount equal to the Common Stock Merger Consideration minus the aggregate amount of all distributions per common OP Unit declared or paid to the holders of common OP Units during the period commencing on the date of Closing and ending on the date a notice of redemption is received; and
any common OP Units redeemed after the Initial Post-Closing Period will be valued by the General Partner in good faith on the basis of such information as it considers, in its reasonable judgment, as appropriate.
Effective as of July 1, 2024, AIR converted from a Maryland corporation to a Delaware limited liability company (the “Company Conversion”) with the name “Apartment Income REIT LLC” and continues to be managed by a Board of Directors.
In connection with the Company Conversion, certain subsidiaries of AIR were also converted to limited liability companies, including the general partner of the AIR Operating Partnership, which converted from a Delaware corporation to a Delaware limited liability company with the name “AIR-GP LLC” (the “General Partner”). As a result of such conversion, the General Partner is now managed by its sole member rather than a board. In turn, that sole member is managed by its sole member, AIR, under the direction of AIR’s Board of Directors.
Concurrently with, and in connection with, the Company Conversion, the Partnership Agreement was further amended by the adoption of an Amendment No. 2 (the “Amendment No. 2”). Amendment No. 2 (i) clarified references to AIR and its capital stock to account for the different form of entity of AIR as a result of the Company Conversion and (ii) eliminated Exhibits Q and R relating to the Class Eleven and Class Twelve Preferred OP Units, which were previously wholly owned by subsidiaries of AIR. On July 1, 2024, the AIR Operating Partnership filed an amendment to its Certificate of Limited Partnership (the “Certificate of Amendment”) solely to reflect the new name of the General Partner.
Additional Information
The Merger was funded primarily via cash provided by affiliates of Blackstone and the net proceeds from the issuance of debt instruments. The net funding was used to satisfy the cancellation of AIR’s Common Stock and stock options, the redemption of restricted stock awards, the payment of merger-related costs, and the termination of $1.7 billion of outstanding debt principal amounts during the six months ended June 30, 2024. The cancellations and redemptions are outlined above, refer to Note 6 for discussion regarding debt transactions and Note 4 for discussion regarding the special distributions paid.
Additionally, and as a result of Closing, the Operating Partnership elected to use a convenience date of June 30, 2024, for the basis of accounting, as the difference in dates is not material to the presentation of the financial results. In connection with the Merger, we did not elect push-down accounting.
v3.25.1
Significant Transactions
12 Months Ended
Dec. 31, 2024
Significant Transactions [Abstract]  
Significant Transactions Significant Transactions
Apartment Community Acquisitions
During the year ended December 31, 2024, we acquired one apartment community located in Raleigh, North Carolina and one apartment community located in Bethesda, Maryland. Summarized information regarding these acquisitions is set forth in the table below (dollars in thousands):
Number of apartment communities2
Number of apartment homes743
Commercial space acquired (in square feet)
50,500 
Purchase price$236,500 
Capitalized transaction costs3,809 
Total consideration
$240,309 
Land$51,548 
Building and improvements177,140 
Intangible assets (1)
11,877 
Below-market lease liabilities (1)
(256)
Total consideration
$240,309 
(1)At the time of acquisition, intangible assets and below-market lease liabilities for the Bethesda, Maryland apartment community acquisition had a weighted-average term of 4.7 years and 0.5 years, respectively. At the time of acquisition, intangible assets and below-market lease liabilities for the Raleigh, North Carolina apartment community acquisition had a weighted-average term of 0.5 years.
Apartment Community Dispositions
Sold apartment communities during the years ended December 31, 2024, 2023, and 2022, are summarized below (dollars in thousands):
2024 (1)
20232022
Number of apartment communities sold
1318
Number of apartment homes sold3592573,364
Gain on apartment community sales (2)
$3,199 $— $939,806 
(1)    The apartment community acquired in Bethesda, Maryland was subsequently contributed to our joint venture with a global institutional investor (the “Core JV”), which represents an apartment community disposition under GAAP. Upon contribution of the apartment community and the related non-recourse property debt to the Core JV, we received $27.5 million in cash consideration. See Note 7 for discussion regarding our joint venture transactions.
(2)    The apartment communities sold during the year ended December 31, 2023 generated net proceeds of $52.1 million, which approximated their carrying value.
At the end of each reporting period we evaluate whether any communities meet the criteria to be classified as held for sale. As of December 31, 2024, no communities were classified as held for sale.
Write-Off of Pre-development, Development, and Redevelopment Costs
During the year ended December 31, 2024, we wrote off $14.3 million of costs associated with certain pre-development, development, and redevelopment projects which we no longer intend to pursue as a result of the Merger. The write-off of costs associated with these projects represents non-cash activity during the period and is included in other expenses, net, in our consolidated statements of operations.
Distributions
In the first quarter of 2024, we paid regular, recurring distributions per common OP Unit of $0.45. As a result of the announcement of the Merger Agreement on April 7, 2024, no regular, recurring distributions were paid in the second, third, or fourth quarters of 2024.
For the years ended December 31, 2023 and 2022, regular, recurring distributions paid per common OP Unit were $1.80.
In the second quarter of 2024 and in connection with, but effective immediately following, the Closing of the transactions contemplated by the Merger Agreement as described in Note 3, the AIR Operating Partnership paid a special cash distribution in an aggregate amount of $1.2 billion to holders of record of common OP Units and LTIP units
immediately following the effective time of the Merger, representing a distribution of $7.70 per common OP Unit. The special distribution paid to the General Partner and Special Limited Partner was used to fund the Merger.
On August 1, 2024, and in connection with the July 2024 financing transactions described in Note 6, the AIR Operating Partnership paid a special cash distribution in an aggregate amount of $892.0 million to holders of record of common OP Units and LTIP units as of the close of business on July 31, 2024, representing a distribution of $5.80 per common OP Unit.
Departure of Certain Executive Officers
In October 2024, Terry Considine resigned as Chief Executive Officer, as well as from all other director and officer positions held at AIR and its affiliated entities. Additionally, Joshua Minix resigned as Executive Vice President and Chief Investment Officer, along with any other officer positions he held at AIR and its affiliated entities.
As a result of the separation payments in connection with these departures, during the third quarter of 2024, we recorded $9.6 million of incremental compensation expense, which is included in other expenses, net, in our consolidated statements of operations. Additionally, certain LTIP units in the Operating Partnership held by Mr. Considine vested in accordance with their terms, with all remaining unvested LTIP units being forfeited, resulting in the acceleration of share-based compensation expense totaling $7.9 million, which is included in other expenses, net in our consolidated statements of operations for the year ended December 31, 2024.
v3.25.1
Leases
12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Leases Leases
Tenant Lessor Arrangements
The majority of lease payments we receive from our residents are fixed. We receive variable payments from our residents primarily for utility reimbursements. Our total lease income was comprised of the following amounts for all operating leases for the years ended December 31, 2024, 2023, and 2022 (in thousands):
202420232022
Fixed lease income$728,416 $752,068 $715,060 
Variable lease income55,795 56,060 47,358 
Total lease income$784,211 $808,128 $762,418 
Generally, our residential leases do not provide extension options and, as of December 31, 2024, have an average remaining term of 9.4 months. In general, our commercial leases have options to extend for a certain period of time at the tenant’s option. As of December 31, 2024, future minimum annual rental payments we are contractually obligated to receive under residential and commercial leases, excluding such extension options, are as follows (in thousands):
2025$456,674 
2026102,868 
202715,520 
202811,387 
20299,467 
Thereafter25,958 
Total$621,874 
Lessee Arrangements
We recognize right-of-use assets and related lease liabilities, which are included in other assets, net and accrued liabilities and other, respectively, in our consolidated balance sheets. We estimated the value of the lease liabilities using a discount rate equivalent to the rate we would pay on a secured borrowing with similar terms to the lease.
Substantially all of the payments under our ground and office leases are fixed. We exclude options to extend the lease in our minimum lease terms unless the option is reasonably certain to be exercised. During 2022, we assumed a ground lease for a property acquired in the Washington, D.C. area. Our total lease cost for ground and office leases for the years ended December 31, 2024, 2023, and 2022 was $21.5 million, $21.5 million, and $15.4 million, respectively.
As of December 31, 2024, the ground and office leases have weighted-average remaining terms of 86.3 and 4.6 years, respectively, and weighted-average discount rates of 6.9% and 4.0%, respectively. As of December 31, 2024, minimum annual rental payments under these operating leases, reconciled to the lease liability included in accrued liabilities and other in our consolidated balance sheets, are as follows (in thousands):
2025$8,217 
20268,419 
20278,528 
20288,501 
20297,787 
Thereafter1,701,047 
Total1,742,499 
Less: Discount1,605,181 
Total lease liability$137,318 
Of the total lease liability as of December 31, 2024, $130.7 million of the balance relates to our ground leases, with the remainder relating to our office leases.
Lesses Leases
Tenant Lessor Arrangements
The majority of lease payments we receive from our residents are fixed. We receive variable payments from our residents primarily for utility reimbursements. Our total lease income was comprised of the following amounts for all operating leases for the years ended December 31, 2024, 2023, and 2022 (in thousands):
202420232022
Fixed lease income$728,416 $752,068 $715,060 
Variable lease income55,795 56,060 47,358 
Total lease income$784,211 $808,128 $762,418 
Generally, our residential leases do not provide extension options and, as of December 31, 2024, have an average remaining term of 9.4 months. In general, our commercial leases have options to extend for a certain period of time at the tenant’s option. As of December 31, 2024, future minimum annual rental payments we are contractually obligated to receive under residential and commercial leases, excluding such extension options, are as follows (in thousands):
2025$456,674 
2026102,868 
202715,520 
202811,387 
20299,467 
Thereafter25,958 
Total$621,874 
Lessee Arrangements
We recognize right-of-use assets and related lease liabilities, which are included in other assets, net and accrued liabilities and other, respectively, in our consolidated balance sheets. We estimated the value of the lease liabilities using a discount rate equivalent to the rate we would pay on a secured borrowing with similar terms to the lease.
Substantially all of the payments under our ground and office leases are fixed. We exclude options to extend the lease in our minimum lease terms unless the option is reasonably certain to be exercised. During 2022, we assumed a ground lease for a property acquired in the Washington, D.C. area. Our total lease cost for ground and office leases for the years ended December 31, 2024, 2023, and 2022 was $21.5 million, $21.5 million, and $15.4 million, respectively.
As of December 31, 2024, the ground and office leases have weighted-average remaining terms of 86.3 and 4.6 years, respectively, and weighted-average discount rates of 6.9% and 4.0%, respectively. As of December 31, 2024, minimum annual rental payments under these operating leases, reconciled to the lease liability included in accrued liabilities and other in our consolidated balance sheets, are as follows (in thousands):
2025$8,217 
20268,419 
20278,528 
20288,501 
20297,787 
Thereafter1,701,047 
Total1,742,499 
Less: Discount1,605,181 
Total lease liability$137,318 
Of the total lease liability as of December 31, 2024, $130.7 million of the balance relates to our ground leases, with the remainder relating to our office leases.
v3.25.1
Debt
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Debt Debt
The following table summarizes our total consolidated indebtedness as of December 31, 2024 and 2023 (in thousands):
2024
2023
Secured debt:
Fixed-rate property debt due July 2025 to January 2055 (1)
$2,144,797 $2,236,975 
Variable-rate property debt due July 2029 to October 2029 (2)
4,140,409 — 
Total non-recourse property debt6,285,206 2,236,975 
Debt issuance costs, net of accumulated amortization(43,337)(13,184)
Total non-recourse property debt, net$6,241,869 $2,223,791 
Unsecured debt:
Term loans due December 2024 to April 2026
$— $475,000 
Revolving credit facility borrowings due April 2025
— 115,000 
4.58% Notes payable due June 2027
— 100,000 
4.77% Notes payable due June 2029
— 100,000 
4.84% Notes payable due June 2032
— 200,000 
Total unsecured debt— 990,000 
Debt issuance costs, net of accumulated amortization— (3,447)
Total unsecured debt, net 986,553 
Total indebtedness$6,241,869 $3,210,344 
(1)The stated rates on our fixed-rate property debt are between 2.7% to 7.1%.
(2)As of December 31, 2024, $3.0 billion of our variable-rate property debt is economically hedged at an effective interest rate of 6.92% via interest rate swaps. Additionally, $1.0 billion of our variable-rate property debt is economically hedged at a maximum effective interest rate of 7.03% via interest rate caps. The remaining $0.1 billion of our variable-rate property debt is economically hedged at a maximum effective interest rate of 7.99% via an interest rate cap.
As a result of the Merger and subsequent financing transactions completed to finalize our go-forward capital structure, during June, July, and September 2024, we placed net incremental financing of approximately $3.0 billion. The net cash proceeds from these transactions were used to fund the consideration for the Merger, pay for certain costs and expenses related to the Merger, and to fund special distributions as described in Note 4. These transactions resulted in total fixed rate property debt of $2.2 billion with a weighted-average effective interest rate of 3.8%, and total variable rate property debt of $4.1 billion, with a weighted-average effective interest rate, before consideration of in place interest rate swaps and caps, of 7.7%. After consideration of these economic derivatives, the weighted-average effective interest rate on our variable rate debt is 7.0%. The below information provides details on these financing transactions.
On June 28, 2024, we placed the following debt instruments in connection with the completion of the Merger. The net proceeds were used to repay the outstanding principal amounts on our term loans, notes payable, revolving credit facility, secured credit facility, and a portion of our fixed-rate property debt, totaling $1.7 billion.
$2.7 billion of variable-rate non-recourse property debt which matures on June 26, 2026, with two one-year extension terms at the option of the AIR Operating Partnership bearing interest at one-month term SOFR plus 2.00%, for an initial rate of 7.33%. This debt was subsequently refinanced in July and September 2024, as described below.
$375.0 million of variable-rate non-recourse property debt, which matured in September 2024, bearing interest at one-month term SOFR plus 2.00%, for an initial rate of 7.33%. This debt was refinanced in July 2024 as described below.
$148.5 million of variable-rate non-recourse property debt, which matures in July 2026 and includes three one-year extension terms, bearing interest at a one-month term SOFR plus 2.10%, with a maximum interest rate of 7.10% due to an interest rate cap that matures in July 2026.
$20.3 million and $31.9 million of fixed-rate property debt secured by two properties which mature in August 2030, bearing interest at 7.02%, and in October 2030, bearing interest at 7.13%, respectively.
On July 26, 2024, we placed additional non-recourse variable-rate property debt (the “CMBS 1 Loan”), totaling $3.0 billion, maturing in 2026 and subject to three one-year extension options. The interest rate on the CMBS 1 Loan is equal to one month term SOFR, plus a margin rate of 2.18%, for an initial rate of 7.53%. Additionally, we placed $401.9 million of fixed-rate debt secured by one property. The debt matures in August 2029, bearing interest at 5.49%. The proceeds from these financing transactions were used to repay $1.9 billion and $375.0 million of variable-rate property debt, respectively.
On September 18, 2024, we placed additional non-recourse variable-rate property debt (the “CMBS 2 Loan”), totaling $1.1 billion, maturing in 2026 and subject to three one-year extension options. The interest rate on the CMBS 2 Loan is equal to one month term SOFR, plus a margin rate of 2.08%, for an initial rate of 7.17%. The proceeds from the CMBS 2 Loan were used to repay $0.8 billion of variable-rate property debt.
As a result of these transactions, we recognized $36.9 million of loss on extinguishment of debt during the year ended December 31, 2024, which represents the unamortized discounts and related expenses and fees associated with the termination of these instruments.
As of December 31, 2024, our fixed-rate property debt was secured by 22 apartment communities that had an aggregate net book value of $1.7 billion. As of December 31, 2024, our variable-rate property debt was secured by 39 apartment communities that had an aggregate net book value of $3.6 billion. Principal and interest on fixed-rate and variable-rate property debt are generally payable monthly or in monthly interest-only payments with balloon payments due at maturity.
As of December 31, 2024, the scheduled principal amortization and maturity payments for our outstanding debt balances were as follows (in thousands):
AmortizationMaturitiesTotal
2025
$21,400 $300,496 $321,896 
2026
18,452 161,950 180,402 
2027
19,318 63,098 82,416 
2028
13,320 189,652 202,972 
2029 (1)
13,673 4,566,053 4,579,726 
Thereafter154,080 763,714 917,794 
Total $240,243 $6,044,963 $6,285,206 
(1) Amounts presented above are inclusive of extension options on our non-recourse variable-rate property debt and fixed-rate property debt, as outlined above.
v3.25.1
Investments in Unconsolidated Real Estate Partnerships
12 Months Ended
Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]  
Investments in Unconsolidated Real Estate Partnerships Investment in Unconsolidated Real Estate Partnerships
Joint Venture Transactions
During the second quarter of 2024, we acquired a 359-unit property located in Bethesda, Maryland with 50,500 square feet of commercial space for a purchase price of $150.0 million. In connection with the acquisition, we placed $97.3 million of non-recourse property debt. The property and related non-recourse property debt was subsequently contributed to the Core JV, in which we retain a 53% interest. The contribution of the property and the related non-recourse property debt represents non-cash activity during the period. Upon contribution to the Core JV, we received $27.5 million in cash and recognized a gain of $3.2 million as a result of the disposition which is included in gain on dispositions of real estate and impairments of real estate, net in our consolidated statements of operations.
Unconsolidated Joint Ventures
As of December 31, 2024, the AIR Operating Partnership has equity investments in three significant unconsolidated joint ventures: the Core JV, the joint venture with a global asset manager (the “Value-Add JV”), and the “Virginia JV” (collectively, the “Joint Ventures”). We account for these Joint Ventures utilizing the equity method of accounting and our ownership interests meet the definition of a VIE. However, we are not the primary beneficiary and do not consolidate these entities.
Virginia JV (1)Value-Add JV (2)Core JV
Initial formation dateOctober 2021June 2023July 2023
AIR Operating Partnership Ownership
20%30%53%
Outside entities ownership80%70%47%
Number of apartment communities3112
Apartment homes
1,7484443,909
(1)Our partner in the Virginia JV is an affiliate of Blackstone.
(2)A global asset manager acquired a 70% legal ownership in the Huntington Gateway property, but the AIR Operating Partnership is entitled to 50% of the net cash flows from operations, and various fees for providing property management, construction, and corporate services to the joint venture.
The carrying value of our investment in each joint venture is included in investment in unconsolidated real estate partnerships in our consolidated balance sheets. Our exposure to the obligations of the VIEs is limited to the carrying value of the limited partnership interests and our interest of the joint ventures' guarantor non-recourse liabilities. The following tables summarize certain relevant financial information with respect to our investment in unconsolidated joint ventures (in thousands):
December 31, 2024
Virginia JVValue-Add JVCore JV
Net real estate
$450,164 $137,071 $1,383,264 
Other assets, net
7,226 5,757 33,009 
Total assets$457,390 $142,828 $1,416,273 
Third-party debt$395,000 $89,282 $891,097 
Accrued liabilities and other
5,643 1,667 14,721 
Total liabilities$400,643 $90,949 $905,818 
Total equity$56,747 $51,879 $510,455 
AIR Operating Partnership's investment in balance (1)
$13,501 $30,039 $276,588 
(1)    Our investment in balance includes certain basis differences that are subject to amortization. Our investment in unconsolidated real estate partnerships in our consolidated balance sheets also includes $21.2 million related to two immaterial unconsolidated investments.
December 31, 2023
Virginia JVValue-Add JVCore JV
Net real estate
$467,020 $131,339 $1,258,307 
Other assets, net
7,061 7,368 41,882 
Total assets$474,081 $138,707 $1,300,189 
Third-party debt$395,000 $88,741 $793,910 
Accrued liabilities and other
4,070 2,528 10,298 
Total liabilities$399,070 $91,269 $804,208 
Total equity$75,011 $47,438 $495,981 
AIR Operating Partnership's investment in balance (1)
$17,212 $28,606 $268,931 
(1)    Our investment in balance includes certain basis differences that are subject to amortization. Our investment in unconsolidated real estate partnerships in our consolidated balance sheets also includes $21.3 million related to two immaterial unconsolidated investments.
The following tables summarize the financial information related to the Joint Ventures for the years ended December 31, 2024, 2023, and 2022 (in thousands):
December 31, 2024
Virginia JVValue-Add JVCore JV
Total revenues$47,576 $13,409 $125,104 
Total expenses59,065 16,442 149,717 
Net loss$(11,489)$(3,033)$(24,613)
AIR Operating Partnership's loss from unconsolidated real estate partnerships
$(2,356)$(811)$(13,868)
December 31, 2023
Virginia JVValue-Add JVCore JV
Total revenues$44,725 $6,665 $51,341 
Total expenses64,779 12,969 94,141 
Net loss$(20,054)$(6,304)$(42,800)
AIR Operating Partnership's loss from unconsolidated real estate partnerships
$(3,999)$(2,772)$(22,877)
December 31, 2022
Virginia JVValue-Add JVCore JV
Total revenues$41,422 $— $— 
Total expenses57,316 — — 
Net loss$(15,894)$— $— 
AIR Operating Partnership's loss from unconsolidated real estate partnerships
$(3,504)$— $— 
v3.25.1
Commitments and Contingencies
12 Months Ended
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies Commitments and Contingencies
Commitments
We enter into certain commitments for future purchases of goods and services in connection with the operations of our apartment communities. Those commitments generally have terms of one year or less and reflect expenditure levels comparable to our historical expenditures.
Legal Matters
In addition to the matters described below, we are a party to various legal actions and administrative proceedings arising in the ordinary course of business, some of which are covered by our general liability insurance program, and none of which we expect to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.
Environmental
Various federal, state and local laws subject apartment community owners or operators to liability for management and the costs of removal or remediation of certain potentially hazardous materials that may be present in the land or buildings of an apartment community. Such laws often impose liability without regard to fault or whether the owner or operator knew of, or was responsible for, the presence of such materials. The presence of, or the failure to manage or remediate properly, these materials may adversely affect occupancy at such apartment communities as well as the ability to sell or finance such apartment communities. In addition, governmental agencies may bring claims for costs associated with investigation and remediation actions. Moreover, private plaintiffs may potentially make claims for investigation and remediation costs they incur or for personal injury, disease, disability, or other infirmities related to the alleged presence of hazardous materials. In addition to potential environmental liabilities or costs associated with our current apartment
communities, we may also be responsible for such liabilities or costs associated with communities we acquire or manage in the future or apartment communities we no longer own or operate.
We are engaged in discussions with the Environmental Protection Agency (“EPA”), regarding contaminated groundwater near an Indiana apartment community that has not been owned by us since 2008, for which we have recognized a contingent liability. The contamination allegedly derives from a dry cleaner that operated on our former property, prior to our ownership. We undertook a voluntary remediation of the dry cleaner contamination under state oversight. In 2016, EPA listed our former community and a number of residential communities in the vicinity on the National Priorities List (“NPL”) (i.e., as a Superfund site). In May 2018, we prevailed on our federal judicial appeal vacating the Superfund listing. We continue to work with EPA to formulate an agreed order to reimburse EPA costs and finish clean-up of the site outside the Superfund program. Although the outcome of this process is uncertain, we do not expect the resolution to have a material adverse effect on our consolidated financial condition, results of operations, or cash flows.
We have a contingent liability related to a property in Lake Tahoe, California. An entity owned by us was the former general partner of a now-dissolved partnership that previously owned a site where a laundromat, with a self-service dry-cleaning machine, operated. That entity and the current property owner have been remediating the site since 2009, under the oversight of the Lahontan Regional Water Quality Control Board (“Lahontan”). In May 2017, Lahontan issued a final cleanup and abatement order that names four potentially-responsible parties, acknowledges that there may be additional responsible parties, and requires the named parties to perform additional groundwater investigation and corrective actions with respect to onsite and offsite contamination. We appealed the final order, and on June 1, 2020, the court vacated the Order against us. However, there are still civil suits pending related to this contingent liability. Although the outcome of this process is uncertain, we do not expect the resolution to have a material adverse effect on our consolidated financial condition, results of operations, or cash flows.
We have determined that our legal obligations to remove or remediate certain potentially hazardous materials may be conditional asset retirement obligations (“AROs”), as defined by GAAP. Except in limited circumstances where the asset retirement activities are expected to be performed in connection with a planned construction project or apartment community casualty, we believe that the fair value of our AROs cannot be reasonably estimated due to significant uncertainties in the timing and manner of settlement of those obligations. AROs that are reasonably estimable as of December 31, 2024, are immaterial to our consolidated financial statements.
v3.25.1
Partners’ (Deficit) Capital
12 Months Ended
Dec. 31, 2024
Partners' Capital [Abstract]  
Partners’ (Deficit) Capital Partners’ (Deficit) Capital
Redeemable Preferred OP Units
The AIR Operating Partnership has outstanding various classes of redeemable preferred OP Units. As of December 31, 2024 and 2023, the AIR Operating Partnership had the following classes of preferred OP Units (stated at their redemption values, in thousands, except unit and per unit data):
Distributions per AnnumUnits Issued and 
Outstanding
Redemption Values
Class of Preferred UnitsPercentPer Unit2024202320242023
Class One8.75 %$8.00 90,000 90,000 $8,229 $8,229 
Class Two1.92 %$0.48 5,368 5,368 132 132 
Class Three7.88 %$1.97 472,281 1,310,902 11,807 32,772 
Class Four8.00 %$2.00 644,954 644,954 16,124 16,124 
Class Six8.50 %$2.13 769,585 769,585 19,240 19,240 
Class Seven7.87 %$1.97 20,970 25,715 524 643 
Total2,003,158 2,846,524 $56,056 $77,140 
Each class of preferred OP Units is currently redeemable at the holders’ option. The AIR Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the preferred OP Units, subject to limited exceptions. Subject to certain conditions, the Class Four and Class Six preferred OP Units may be converted into common OP Units. These redeemable preferred units are classified within temporary capital in the AIR Operating Partnership’s consolidated balance sheets.
During the years ended December 31, 2024, 2023, and 2022, approximately 843,000, 50, and 89,000 preferred OP Units, respectively, were redeemed in exchange for cash.
The following table presents a rollforward of the AIR Operating Partnership’s preferred OP Units’ redemption value and accrued distributions (in thousands):
Balance at January 1, 2024$77,140 
Preferred distributions(5,103)
Redemption of preferred units(21,084)
Net income allocated to preferred units5,874 
Balance at December 31, 2024
$56,827 
AIR Operating Partnership Partners’ (Deficit) Capital
Common Partnership Units
Common OP Unit interests are classified within Partners’ (deficit) capital as General Partner and Special Limited Partner and as Limited Partners within AIR Operating Partnership's consolidated balance sheets.
In connection with the Merger, AIR Operating Partnership will not exercise its right to pay for such redeemed units in the AIR Operating Partnership in shares of AIR's Class A Common Stock, and instead will only pay cash for redemptions. Refer to Note 3 for discussion around the Closing of the transactions contemplated by the Merger Agreement. Common OP Units are redeemable for cash equal to the Net Asset Value ("NAV") at the time of redemption.
During the years ended December 31, 2024, 2023, and 2022, approximately 1,068,000, 528,000 and 251,000 common OP Units, respectively, were redeemed in exchange for cash. Prior to the Merger, during the year ended December 31, 2024, and during the year ended December 31, 2023, no common OP Units were redeemed for shares of AIR's Class A Common Stock. During the year ended December 31, 2022, approximately 3,000 common OP Units were redeemed in exchange for shares of AIR's Class A Common Stock.
v3.25.1
Earnings Per Unit
12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Earnings per Unit Earnings per Unit
We calculate basic earnings per common unit based on the weighted-average number of shares of common OP Units outstanding. We calculate diluted earnings per unit taking into consideration dilutive common unit equivalents and dilutive convertible securities outstanding during the period.
Our common partnership unit equivalents include preferred OP Units, which may be redeemed for cash, and long-term incentive partnership units. We include in the denominator securities with dilutive effect in calculating diluted earnings (loss) per unit during these periods.
We include the effect of our long-term incentive partnership units in basic and diluted earnings per unit computations using the two-class method of allocating distributed and undistributed earnings when the two-class method is more dilutive than the treasury stock method.
Reconciliations of the numerator and denominator in the calculations of basic and diluted earnings per unit for the years ended December 31, 2024, 2023, and 2022 are as follows (in thousands, except per unit data):
202420232022
Earnings per unit
Numerator:
Basic net (loss) income attributable to the AIR Operating Partnership’s common unitholders
$(367,019)$677,165 $962,414 
Effect of dilutive instruments— 6,280 6,388 
Dilutive net (loss) income attributable to the AIR Operating Partnership’s common unitholders
$(367,019)$683,445 $968,802 
 
Denominator – units:
Basic weighted-average common units outstanding154,016157,687164,141
Dilutive common unit equivalents outstanding— 2,3212,494
Dilutive weighted-average common units outstanding154,016160,008166,635
Earnings per unit – basic $(2.38)$4.29 $5.86 
Earnings per unit – diluted$(2.38)$4.27 $5.81 
v3.25.1
Fair Value Measurements
12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
We estimate the fair value of certain assets and liabilities using pricing models that rely on observable market information, including contractual terms, market prices, and interest rate yield curves. A three-level valuation hierarchy prioritizes observable and unobservable inputs used to measure fair value, as described below:
Level 1 – Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.
Level 2 – Observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data.
Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies, and similar techniques that use significant unobservable inputs.
Recurring Fair Value Measurements
The following table summarizes investments measured at fair value on a recurring basis, which are presented in other assets, net, and accrued liabilities and other in our consolidated balance sheets (in thousands).
As of December 31, 2024
As of December 31, 2023
Total Fair ValueLevel 1Level 2Level 3Total Fair ValueLevel 1Level 2Level 3
Interest rate swaps - pay-fixed, receive floating$66 $— $66 $— $14,679 $— $14,679 $— 
Interest rate swaps - pay-floating, receive fixed$ $— $— $— $465 $— $465 $— 
Interest rate swaps - forward starting$ $— $— $— $331 $— $331 $— 
Interest rate caps - net (1)
$5,262 $— $5,262 $— $ $— $— $— 
(1)The fair value of interest rate caps, net, is inclusive of $11.0 million related to interest rate caps, offset partially by $5.8 million related to sold interest rate caps.
See Note 12 for discussion regarding our derivative activity during the year.
Financial Assets and Liabilities Not Measured at Fair Value
We believe that the carrying value of the consolidated amounts of cash and cash equivalents, restricted cash, accounts receivable, and accounts payable approximated their estimated fair value as of December 31, 2024 and 2023, due to their relatively short-term nature and high probability of realization.
The carrying value of our previously held revolving credit facility and term loans, which were repaid in connection with the Closing, as well as our current variable-rate non-recourse property debt are classified as Level 2 in the GAAP fair value hierarchy. See Note 6 for discussion regarding our financing transactions during the period. As of December 31, 2024 and 2023, the carrying value of our variable-rate debt approximated the estimated fair value as these instruments bear interest at floating rates which approximate market rates.
We classify the fair value of our fixed-rate non-recourse property debt, unsecured notes payable, seller financing notes receivable, and preferred equity investment within Level 2 of the GAAP fair value hierarchy, as summarized in the following table (in thousands):
As of December 31, 2024As of December 31, 2023
Carrying ValueFair ValueCarrying ValueFair Value
Fixed-rate non-recourse property debt
$2,144,797 $1,963,083 $2,236,975 $2,001,532 
Unsecured notes payable (1)
$— $— $400,000 $384,244 
Seller financing note receivable, net
$33,151 $32,999 $32,459 $33,042 
Preferred equity investment
$23,872 $25,513 $22,693 $23,562 
(1)In the second quarter of 2024, in connection with the Closing, we repaid $400.0 million of outstanding principal on our fixed-rate Notes Payable. See Note 6 for discussion regarding our financing transactions during the period.
v3.25.1
Derivative Financial Instruments and Hedging Activities
12 Months Ended
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivative Financial Instruments and Hedging Activities Derivative Financial Instruments and Hedging Activities
Risk Management Objective of Using Derivatives
Our objectives in using interest rate derivatives are to add predictability to interest expense and to manage our exposure to interest rate movements. To accomplish these objectives, we primarily use interest rate swaps, interest rate caps, and treasury locks as part of our interest rate management strategy. Interest rate swaps primarily involve the receipt of variable-rate and fixed-rate amounts from a counterparty in exchange for us making fixed-rate or variable-rate payments over the life of the agreements without exchange of the underlying notional amounts.
Changes in fair value of derivatives designated as cash flow hedges are recognized in other comprehensive (loss) income and subsequently reclassified into earnings as an increase or decrease to interest expense. As of December, 31 2024, we had no outstanding derivatives designated as cash flow hedges. During the year ended December 31, 2024, we reclassified gains of $15.5 million out of other comprehensive loss into interest expense, inclusive of the accelerated gain due to the early payoff of fixed-rate loans previously designated as hedged instruments. During the years ended December 31, 2023 and 2022, we reclassified a gain of $25.8 million and a loss of $0.3M out of other comprehensive income into interest expense, respectively. As of December 31, 2024, we estimate that during the next 12 months, we will reclassify into earnings approximately $4.0 million of the unrealized gain in other comprehensive (loss) income.
Changes in fair value of derivatives not designated in a hedge relationship, or economic hedges, are recognized in gain on derivative instruments, net, in our consolidated statements of operations. During the years ended December 31, 2024 and 2023, gain on derivative instruments, net was $11.2 million and $16.7 million, respectively. During the year ended December 31, 2022, no amounts were recognized related to derivatives not designated in a hedge relationship.
Additionally, we have $550.0 million of speculative interest rate swaps previously placed, which continue to have favorable blended interest rates as compared to current market rates.
The following tables summarize our derivative financial instruments (dollars in thousands):
As of December 31, 2024
Number ofAggregate NotionalDerivative Assets
(included in Other Assets, net)
Derivative Liabilities
(included in Accrued Liabilities and Other)
InstrumentsAmountFair Value
Derivatives not designated as hedging instruments:
Interest rate swaps - pay-fixed, receive-floating
15$4,550,000 $10,177 $(10,111)
Interest rate caps - net (1)
6$1,148,500 $11,025 $(5,763)
(1)Interest rate caps, net, is inclusive of four interest rate caps with an aggregate notional value of $4.1 billion, offset partially by two sold interest rate caps with an aggregate notional value of $3.0 billion.
As of December 31, 2023
Number ofAggregate NotionalDerivative Assets
(included in Other Assets, net)
Derivative Liabilities
(included in Accrued Liabilities and Other)
InstrumentsAmountFair Value
Derivatives not designated as hedging instruments:
Interest rate swaps - pay-fixed, receive-floating
7$555,000 $15,266 $(587)
Interest rate swaps - pay-floating, receive-fixed
2$80,000 $472 $(7)
Interest rate swaps - forward starting
1$50,000 $331 $— 
v3.25.1
Variable Interest Entities
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Variable Interest Entities Variable Interest Entities
Consolidated Entities
We consolidate (i) three VIEs that own interests in one or more apartment communities and are typically structured to generate a return for their partners through the operation and ultimate sale of the communities and (ii) one VIE related to a lessor entity that owns an interest in a property leased to a third party. We are the primary beneficiary in the limited partnerships in which it is the sole decision maker and has a substantial economic interest.
The table below summarizes apartment community information regarding VIEs consolidated by the AIR Operating Partnership:
December 31, 2024December 31, 2023
VIEs with interests in apartment communities33
Apartment communities owned by VIEs1414
Apartment homes in communities owned by VIEs4,8664,866
Assets of the AIR Operating Partnership’s consolidated VIEs must first be used to settle the liabilities of such consolidated VIEs. These consolidated VIEs’ creditors do not have recourse to the general credit of the AIR Operating Partnership. Assets and liabilities of VIEs are summarized in the table below (in thousands):
December 31, 2024December 31, 2023
ASSETS:
Net real estate$972,802 $1,013,770 
Cash and cash equivalents45,554 41,219 
Restricted cash1,876 2,179 
Other assets, net23,904 22,546 
LIABILITIES:
Non-recourse property debt, net$1,309,959 $1,196,280 
Accrued liabilities and other36,743 34,903 
v3.25.1
Business Segments
12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Business Segments Business Segments
We have two segments: Same Store and Other Real Estate. Our Same Store segment includes communities that are owned and operated by the AIR Operating Partnership and have reached a stabilized level of operations. Our Other Real Estate segment includes four properties acquired in 2023, two properties acquired in 2024, and two properties undergoing planned property capital investment.
The Co-Principal Executive Officers ("CPEO") are our chief operating decision makers ("CODM"). The CPEO includes our President and General Counsel and the President of Property Operations. They use proportionate property NOI to assess the operating performance of our communities. Proportionate property NOI reflects our share of rental and other property revenues, excluding utility reimbursements, less direct property operating expenses, net of utility reimbursements. In our consolidated statements of operations, utility reimbursements are included in rental and other property revenues in accordance with GAAP.
As of December 31, 2024, our Same Store segment included 69 apartment communities with 24,275 apartment homes and our Other Real Estate segment included eight apartment communities with 3,120 apartment homes.
The following tables present the total revenues, property management and operating expenses, proportionate property net operating income (loss), and income (loss) before income tax benefit (expense) of our segments on a proportionate basis. To reflect how the CODM evaluates the business, prior period segment information has been recast to conform with our reportable segment composition as of December 31, 2024 (in thousands):
Same
Store
Other
Real Estate
Proportionate
and Other
Adjustments (1)
Corporate and
Amounts Not
Allocated to
Segments (2)
Consolidated
Year ended December 31, 2024:
Total revenues$683,735 $79,626 $22,320 $14,920 $800,601 
Property management and operating expenses
178,483 27,967 30,185 39,035 275,670 
Other operating expenses not allocated to segments (3)— — — 431,120 431,120 
Total operating expenses178,483 27,967 30,185 470,155 706,790 
Proportionate property net operating income (loss)505,252 51,659 (7,865)(455,235)93,811 
Other items included in income before income tax benefit (4)
— — — (451,957)(451,957)
Income (loss) before income tax benefit
$505,252 $51,659 $(7,865)$(907,192)$(358,146)
Same
Store
Other
Real Estate
Proportionate
and Other
Adjustments (1)
Corporate and
Amounts Not
Allocated to
Segments (2)
Consolidated
Year ended December 31, 2023:
Total revenues$664,022 $55,696 $85,862 $14,456 $820,036 
Property management and operating expenses
171,610 20,111 43,640 40,471 275,832 
Other operating expenses not allocated to segments (3)— — — 393,976 393,976 
Total operating expenses171,610 20,111 43,640 434,447 669,808 
Proportionate property net operating income (loss)492,412 35,585 42,222 (419,991)150,228 
Other items included in income before income tax expense (4)— — — 541,486 541,486 
Income before income tax expense
$492,412 $35,585 $42,222 $121,495 $691,714 
Same
Store
Other
Real Estate
Proportionate
and Other
Adjustments (1)
Corporate and
Amounts Not
Allocated to
Segments (2)
Consolidated
Year ended December 31, 2022:
Total revenues$578,123 $15,641 $126,137 $53,822 $773,723 
Property management and operating expenses
151,816 7,980 51,501 49,967 261,264 
Other operating expenses not allocated to segments (3)— — — 384,957 384,957 
Total operating expenses151,816 7,980 51,501 434,924 646,221 
Proportionate property net operating income (loss)426,307 7,661 74,636 (381,102)127,502 
Other items included in income before income tax expense (4)
— — — 846,471 846,471 
Income before income tax expense
$426,307 $7,661 $74,636 $465,369 $973,973 
(1)Represents adjustments to: (i) exclude AIR Operating Partnership’s proportionate share of the results of unconsolidated apartment communities, which is excluded in the related consolidated amounts, and (ii) include the noncontrolling interests in consolidated real estate partnerships’ proportionate share of the results of communities, which is included in the related consolidated amounts. Also includes the reclassification of utility reimbursements from revenues to property operating expenses for the purpose of evaluating segment results. Utility reimbursements are included in rental and other property revenues in our consolidated statements of operations prepared in accordance with GAAP.
(2)Includes: (i) the operating results of apartment communities sold during the periods shown or held for sale at the end of the period, if any, (ii) property management revenues, which are not part of our segment performance measure, property management expenses and casualty gains and losses, which are included in consolidated property management and operating expenses and are not part of our segment performance measure, and (iii) the depreciation of capitalized costs of non-real estate assets.
(3)Includes depreciation and amortization, general and administrative expenses, and other expenses, net, and may also include write-offs of deferred leasing commissions, which are not included in our measure of segment performance.
(4)Includes interest income, interest expense, loss on extinguishment of debt, gain on dispositions of real estate and impairments of real estate, net, loss from unconsolidated real estate partnerships, gain on derivative instruments, net, and merger-related costs.
Property operating expenses are comprised of operating expenses, utility expenses (net of reimbursement), real estate taxes, and insurance. The following table presents total property operating expenses, by type, that has been allocated to our segments on a proportionate basis. To reflect how the CODM evaluates the business, prior period segment information has been recast to conform with our reportable segment composition as of December 31, 2024 (in thousands):
Year Ended December 31, 2024
Year Ended December 31, 2023
Year Ended December 31, 2022
Same
Store
Other
Real Estate
Same
Store
Other
Real Estate
Same
Store
Other
Real Estate
Operating expenses (1)
$79,213 $14,056 $77,774 $10,172 $72,636 $4,789 
Utility expenses, net of reimbursement
7,703 1,596 9,391 1,185 9,897 368 
Real estate taxes
73,345 10,942 69,404 7,479 59,885 2,595 
Insurance
18,222 1,373 15,041 1,275 9,398 228 
Total property operating expenses
$178,483 $27,967 $171,610 $20,111 $151,816 $7,980 
(1)Includes onsite payroll, repairs and maintenance, software and technology expenses, marketing, expensed turnover costs, and other property related operating expenses.
The assets of our segments and the consolidated assets not allocated to our segments were as follows (in thousands):
December 31, 2024December 31, 2023
Same Store$4,681,532 $4,841,335 
Other Real Estate846,423 779,456 
Corporate and other assets (1)1,047,587 513,961 
Total consolidated assets$6,575,542 $6,134,752 
(1)Includes the assets not allocated to our segments including: (i) corporate assets and (ii) properties sold or classified as held for sale.
For the years ended December 31, 2024, 2023, and 2022, capital additions related to our segments were as follows (in thousands):
202420232022
Same Store$129,617 $139,848 $147,255 
Other Real Estate18,544 15,726 2,451 
Total capital additions$148,161 $155,574 $149,706 
v3.25.1
Schedule III: Real Estate and Accumulated Depreciation
12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]  
Schedule III: Real Estate and Accumulated Depreciation
APARTMENT INCOME REIT, L.P.
SCHEDULE III: REAL ESTATE AND ACCUMULATED DEPRECIATION
December 31, 2024
(In thousands, Except Apartment Home Data)
Apartment Community NameApartment
Type
(1)
Date
Consolidated
LocationYear
Built
Apartment
Homes
Initial Cost(2)
Cost Capitalized
Subsequent to
Consolidation
As of December 31, 2024
LandBuildings and
Improvements
LandBuildings and
Improvements
(3)
Total
(4)
Accumulated
Depreciation (AD)
Total Cost
Net of AD
(5)
Encumbrances
Same Store:
21 FitzsimonsMid RiseAug 2014Aurora, CO2008601$13,176 $110,795 $43,228 $13,176 $154,023 $167,199 $(59,088)$108,111 $100,089 
3400 Avenue of the ArtsMid RiseMar 2002Costa Mesa, CA198777057,241 65,506 104,423 57,241 169,929 227,170 (121,216)105,954 285,086 
707 LeahyGardenSep 2022Redwood City, CA197311020,956 62,605 431 20,956 63,036 83,992 (5,462)78,530 46,805 
777 South Broad StreetMid RiseMay 2018Philadelphia, PA20101466,986 67,512 6,018 6,986 73,530 80,516 (19,147)61,369 36,533 
AxiomMid RiseApr 2015Cambridge, MA2015115— 63,612 5,071 — 68,683 68,683 (23,532)45,151 58,263 
Bay Parc PlazaHigh RiseSep 2004Miami, FL200047422,680 41,847 64,903 22,680 106,750 129,430 (49,222)80,208 99,941 
Boulder CreekGardenJul 1994Boulder, CO1973221754 7,730 20,201 754 27,931 28,685 (22,181)6,504 66,256 
Broadcast CenterGardenMar 2002Los Angeles, CA199027929,407 41,244 46,677 29,407 87,921 117,328 (50,454)66,874 139,713 
Calhoun Beach ClubHigh RiseDec 1998Minneapolis, MN192833211,708 73,334 61,531 11,708 134,865 146,573 (105,540)41,033 85,146 
Charlesbank Apartment HomesMid RiseSep 2013Watertown, MA2012443,399 11,726 1,974 3,399 13,700 17,099 (5,439)11,660 15,845 
Chestnut HallHigh RiseOct 2006Philadelphia, PA192331512,338 14,299 11,308 12,338 25,607 37,945 (16,405)21,540 31,351 
City Center on 7th GardenJun 2021Pembroke Pines, FL201470035,196 186,823 41,845 35,196 228,668 263,864 (32,672)231,192 220,733 
Flamingo Point, Center TowerHigh RiseSep 1997Miami Beach, FL200351315,279 29,358 249,204 15,279 278,562 293,841 (163,400)130,441 267,959 
Flamingo Point, North TowerHigh RiseSep 2022Miami Beach, FL196036691,529 290,682 2,752 91,529 293,434 384,963 (24,204)360,759 220,293 
FoxchaseGardenDec 1997Alexandria, VA19402,11315,496 96,062 98,695 15,496 194,757 210,253 (137,083)73,170 401,920 
Hidden CoveGardenJul 1998Escondido, CA19833343,043 17,616 22,031 3,043 39,647 42,690 (25,930)16,760 64,757 
Hidden Cove IIGardenJul 2007Escondido, CA198611812,849 6,530 7,848 12,849 14,378 27,227 (8,614)18,613 25,183 
HillcresteGardenMar 2002Century City, CA198931535,862 47,216 29,389 35,862 76,605 112,467 (44,785)67,682 153,936 
Indian OaksGardenMar 2002Simi Valley, CA198625424,523 15,801 14,119 24,523 29,920 54,443 (22,395)32,048 58,955 
IndigoHigh RiseAug 2016Redwood City, CA201646326,932 296,116 13,429 26,932 309,545 336,477 (92,502)243,975 168,296 
Laurel CrossingGardenJan 2006San Mateo, CA197141849,474 17,756 25,041 49,474 42,797 92,271 (24,327)67,944 130,409 
Lincoln Place (6)GardenOct 2004Venice, CA1951795128,332 10,439 257,341 44,198 351,914 396,112 (206,356)189,756 166,158 
Malibu CanyonGardenMar 2002Calabasas, CA198669869,834 53,438 47,388 69,834 100,826 170,660 (73,602)97,058 158,950 
Mariners CoveGardenMar 2002San Diego, CA1984500— 66,861 13,602 — 80,463 80,463 (55,381)25,082 130,659 
Meadow CreekGardenJul 1994Boulder, CO19683321,435 24,533 18,010 1,435 42,543 43,978 (28,530)15,448 81,781 
MezzoHigh RiseMar 2015Atlanta, GA2008954,292 34,178 3,540 4,292 37,718 42,010 (13,530)28,480 26,172 
Monterey GroveGardenJun 2008San Jose, CA199922434,325 21,939 20,251 34,325 42,190 76,515 (22,327)54,188 44,415 
North ParkHigh RiseOct 2021Chevy Chase, MD197331042,900 68,090 16,647 42,933 84,704 127,637 (10,380)117,257 89,243 
Apartment Community NameApartment
Type
(1)
Date
Consolidated
LocationYear
Built
Apartment
Homes
Initial Cost(2)
Cost Capitalized
Subsequent to
Consolidation
As of December 31, 2024
LandBuildings and
Improvements
LandBuildings and
Improvements
(3)
Total
(4)
Accumulated
Depreciation (AD)
Total Cost
Net of AD
(5)
Encumbrances
Ocean House on ProspectMid RiseApr 2013La Jolla, CA19705312,528 18,805 14,362 12,528 33,167 45,695 (14,259)31,436 40,732 
One ArdmoreMid RiseApr 2019Ardmore, PA20191104,929 61,631 4,033 4,929 65,664 70,593 (14,099)56,494 27,810 
One CanalHigh RiseSep 2013Boston, MA2016310— 15,873 185,835 — 201,708 201,708 (66,305)135,403 148,500 
Pacific Bay Vistas (6)GardenMar 2001San Bruno, CA198730828,694 62,460 35,476 23,354 103,276 126,630 (55,098)71,532 93,406 
Pacifica ParkGardenJul 2006Pacifica, CA197710412,970 6,579 9,681 12,970 16,260 29,230 (10,127)19,103 37,264 
Palazzo at Park La Brea, TheMid RiseFeb 2004Los Angeles, CA200252148,362 125,464 65,278 48,362 190,742 239,104 (120,863)118,241 201,940 
Palazzo East at Park La Brea, TheMid RiseMar 2005Los Angeles, CA200561172,578 136,503 46,242 72,578 182,745 255,323 (119,479)135,844 170,160 
Parc MosaicGardenDec 2014Boulder, CO197022615,300 — 112,245 15,300 112,245 127,545 (31,066)96,479 87,690 
Peachtree ParkGardenJan 1996Atlanta, GA19693034,684 11,713 16,510 4,375 28,532 32,907 (20,337)12,570 48,317 
Preserve at MarinMid RiseAug 2011Corte Madera, CA196412613,516 30,132 82,697 13,516 112,829 126,345 (53,668)72,677 80,210 
PRISMMid RiseSep 2022Cambridge, MA201913613,768 74,541 1,180 13,768 75,721 89,489 (6,582)82,907 56,571 
Residences at Capital Crescent TrailHigh RiseOct 2021Bethesda, MD200226115,975 84,167 16,964 15,975 101,131 117,106 (11,779)105,327 72,563 
Royal Crest EstatesGardenAug 2002North Andover, MA197058851,292 36,808 27,946 51,292 64,754 116,046 (47,673)68,373 194,762 
Saybrook PointeGardenDec 2014San Jose, CA199532432,842 84,457 29,640 32,842 114,097 146,939 (42,396)104,543 107,347 
SouthStar LoftsHigh RiseMay 2018Philadelphia, PA2014851,780 37,428 1,783 1,780 39,211 40,991 (9,733)31,258 17,000 
Sterling Apartment Homes, TheGardenOct 1999Philadelphia, PA19615348,871 55,365 118,550 8,871 173,915 182,786 (122,306)60,480 178,536 
The District at Flagler VillageHigh RiseJul 2022Fort Lauderdale, FL202135014,472 156,718 3,170 14,472 159,888 174,360 (14,921)159,439 104,107 
The FremontMid RiseSep 2022Aurora, CO20202537,218 92,621 1,188 7,218 93,809 101,027 (8,286)92,741 64,984 
The Left BankMid RiseMay 2018Philadelphia, PA1929282— 130,893 28,445 — 159,338 159,338 (41,382)117,956 71,797 
The Reserve at Coconut PointGardenMay 2022Fort Myers, FL20221805,162 66,593 1,328 5,162 67,921 73,083 (7,847)65,236 42,608 
TremontMid RiseDec 2014Atlanta, GA2009785,274 18,011 4,435 5,274 22,446 27,720 (8,264)19,456 16,567 
Vaughan Place ApartmentsHigh RiseOct 2021Washington, D.C.198838247,276 125,213 23,209 47,244 148,454 195,698 (19,547)176,151 134,151 
Villas at Park La Brea, TheGardenMar 2002Los Angeles, CA20022508,630 48,871 26,183 8,630 75,054 83,684 (50,368)33,316 109,018 
Villas of PasadenaMid RiseJan 2006Pasadena, CA1973929,693 6,818 6,104 9,693 12,922 22,615 (8,339)14,276 20,500 
VivoHigh RiseJun 2016Cambridge, MA2015916,450 35,974 6,532 6,450 42,506 48,956 (21,298)27,658 40,805 
Watermarc at Biscayne BayHigh RiseJun 2022Miami, FL202129634,710 174,237 3,809 34,710 178,046 212,756 (17,098)195,658 132,232 
Waterways VillageGardenJun 1997Aventura, FL19941804,504 11,064 19,305 4,504 30,369 34,873 (21,001)13,872 64,563 
Total Same Store18,989$1,251,424 $3,552,587 $2,139,027 $1,161,642 $5,781,396 $6,943,038 $(2,427,825)$4,515,213 $5,738,987 
Other Real Estate:
Brizo ApartmentsGardenJul 2023Durham, NC2019260$7,652 $60,170 $3,085 $7,652 $63,255 $70,907 $(3,348)$67,559 $41,026 
Flamingo Point, South Tower (7)High RiseSep 1997Miami Beach, FL1960284— 24,425 75,544 — 99,969 99,969 (25,019)74,950 62,821 
Southgate TowersHigh RiseJan 2023Miami Beach, FL195849599,338 187,427 5,878 99,338 193,305 292,643 (14,271)278,372 185,829 
Apartment Community NameApartment
Type
(1)
Date
Consolidated
LocationYear
Built
Apartment
Homes
Initial Cost(2)
Cost Capitalized
Subsequent to
Consolidation
As of December 31, 2024
LandBuildings and
Improvements
LandBuildings and
Improvements
(3)
Total
(4)
Accumulated
Depreciation (AD)
Total Cost
Net of AD
(5)
Encumbrances
Villages at Olde TowneGardenJul 2023Raleigh, NC202236011,575 70,767 2,600 11,575 73,367 84,942 (4,640)80,302 64,798 
Villages at SunnybrookGardenJan 2024Raleigh, NC202238411,704 73,102 3,214 11,704 76,316 88,020 (3,205)84,815 66,965 
Willard TowersHigh RiseJun 2022Washington, D.C.1969522334 179,141 21,889 334 201,030 201,364 (18,951)182,413 124,780 
Other (8)— 4,861 — 12,748 4,861 12,748 17,609 (5,829)11,780 — 
Total Other Real Estate:2,305$135,464 $595,032 $124,958 $135,464 $719,990 $855,454 $(75,263)$780,191 $546,219 
Total Portfolio21,294$1,386,888 $4,147,619 $2,263,985 $1,297,106 $6,501,386 $7,798,492 $(2,503,088)$5,295,404 $6,285,206 
(1)Date we acquired the apartment community or first consolidated the partnership that owns the community.
(2)Includes costs capitalized since acquisition or date of initial consolidation of the community.
(3)The aggregate cost of land and depreciable property for federal income tax purposes was approximately $7.7 billion as of December 31, 2024 (unaudited).
(4)Depreciable life for buildings and improvements ranges from 5 to 30 years and is calculated on a straight-line basis.
(5)Encumbrances are presented before reduction for debt issuance costs.
(6)The current carrying value of the apartment community reflects an impairment loss recognized.
(7)Initial cost of buildings and improvements includes the cost of additional apartment homes acquired subsequent to consolidation.
(8)Other includes apartment communities under development, land parcels, and certain non-residential properties held for future development.
APARTMENT INCOME REIT, L.P.
SCHEDULE III: REAL ESTATE AND ACCUMULATED DEPRECIATION
For the Years Ended December 31, 2024, 2023, and 2022
(In thousands)
202420232022
Total real estate balance at beginning of year$7,610,567 $8,076,394 $6,885,081 
Additions during the year:
   Acquisitions and lease cancellation238,057 447,945 1,300,122 
   Capital additions148,161 168,248 193,360 
Dispositions and other(198,293)(1,082,020)(302,169)
Total real estate balance at end of year$7,798,492 $7,610,567 $8,076,394 
Accumulated depreciation balance at beginning of year$2,245,589 $2,449,883 $2,284,793 
Depreciation299,329 310,952 308,382 
Dispositions and other(41,830)(515,246)(143,292)
Accumulated depreciation balance at end of year$2,503,088 $2,245,589 $2,449,883 
v3.25.1
Pay vs Performance Disclosure - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pay vs Performance Disclosure      
Loss from unconsolidated real estate partnerships $ (361,112) $ 684,102 $ 969,592
v3.25.1
Award Timing Disclosure
12 Months Ended
Dec. 31, 2024
Award Timing Disclosures [Line Items]  
Award Timing MNPI Disclosure
Prior to the Merger, with respect to LTI, the Committee set the grant date for restricted stock, LTIP Unit, and stock option grants at the time of its final compensation determination, generally in late January or early February, although for 2024 determined to make those grants on January 1, 2024. The date of determination and date of award were not selected based on share price. In the case of new-hire packages that included Equity Awards, grants were made on the employee’s start date or on a date designated in advance based on the passage of a specific number of days after the employee’s start date. For non-executive officers, the Committee delegated the authority to make Equity Awards, up to certain limits, to the Chief Financial Officer (Mr. Beldin) and/or Corporate Secretary (Ms. Cohn). Although, we did not have a formal policy, the Committee and Mr. Beldin and Ms. Cohn made grants without regard to the share price or the timing of the release of material non-public information and did not make grants for the purpose of affecting the value of
executive compensation. Subsequent to the Merger, the Operating Partnership does not expect to grant any Equity Awards: accordingly, it does not have a policy on the timing of Equity Awards in relation to material non-public information.
Award Timing Method
Prior to the Merger, with respect to LTI, the Committee set the grant date for restricted stock, LTIP Unit, and stock option grants at the time of its final compensation determination, generally in late January or early February, although for 2024 determined to make those grants on January 1, 2024. The date of determination and date of award were not selected based on share price. In the case of new-hire packages that included Equity Awards, grants were made on the employee’s start date or on a date designated in advance based on the passage of a specific number of days after the employee’s start date. For non-executive officers, the Committee delegated the authority to make Equity Awards, up to certain limits, to the Chief Financial Officer (Mr. Beldin) and/or Corporate Secretary (Ms. Cohn). Although, we did not have a formal policy, the Committee and Mr. Beldin and Ms. Cohn made grants without regard to the share price or the timing of the release of material non-public information and did not make grants for the purpose of affecting the value of
executive compensation. Subsequent to the Merger, the Operating Partnership does not expect to grant any Equity Awards: accordingly, it does not have a policy on the timing of Equity Awards in relation to material non-public information.
Award Timing Predetermined false
Award Timing MNPI Considered false
Award Timing, How MNPI Considered Although, we did not have a formal policy, the Committee and Mr. Beldin and Ms. Cohn made grants without regard to the share price or the timing of the release of material non-public information and did not make grants for the purpose of affecting the value of executive compensation.
MNPI Disclosure Timed for Compensation Value false
v3.25.1
Insider Trading Arrangements
3 Months Ended
Dec. 31, 2024
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.1
Insider Trading Policies and Procedures
12 Months Ended
Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]  
Insider Trading Policies and Procedures Adopted false
Insider Trading Policies and Procedures Not Adopted
Because we are a privately-held company and there is no public market for our securities, we do not have formal policies and procedures related to insider trading. Under our Code of Business Conduct and Ethics, covered persons are expected to comply with applicable laws, rules and regulations.
v3.25.1
Cybersecurity Risk Management and Strategy Disclosure
12 Months Ended
Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
The AIR Operating Partnership takes a risk-based approach to cybersecurity and has implemented cybersecurity policies throughout its operations that are designed to address cybersecurity threats and incidents. We regularly assesses risks from cybersecurity threats, monitors its information systems for potential vulnerabilities, and tests those systems according to our cybersecurity policies, standards, processes, and practices, which are integrated into our overall approach to enterprise risk management. To protect its information systems from cybersecurity threats, We use various security tools that help it identify, escalate, investigate, resolve, and recover from security incidents in a timely manner. Our cybersecurity program is designed to align with the National Institute of Technology Standards Cybersecurity Framework 2.0, which provides a structured approach for governing, assessing, identifying, and managing material risks from cybersecurity threats.
The AIR Operating Partnership’s technology team, under the leadership of our Senior Vice President of Technology and Chief Technology Officer, who has over 30 years of technology management experience, defines an annual work plan designed to maintain strong cybersecurity maturity, set improvement objectives of key controls and systems, including feedback from third-party assessments, and identify and implement on-going investments to replace or upgrade systems or technologies and proactively maintain strong security. As part of our annual planning, management conducts regular tabletop testing of our incident response plan to increase awareness, establish key decision-making criteria, ensure effective communication among key stakeholders, and comply with our disclosure obligations. We also partner with third-party experts to assess the effectiveness of our cybersecurity prevention and response systems and processes (e.g., periodic penetration testing and assessments of IT general controls). We also engage vendors to enhance cybersecurity safeguards and improve incident response and updates or replaces systems and applications as appropriate to improve data processing and storage management and enhance security. To further protect our information systems, we structure and monitor our relationships with third-party service providers and periodically conduct due diligence on their cybersecurity architecture and process design.
To date, cybersecurity threats, including as a result of any previous cybersecurity incidents, have not materially affected us and we believe are not reasonably likely to have a material adverse effect on us, including its business strategy, results of operations, or financial condition. For additional information on cybersecurity risks and potential related impacts on AIR Operating Partnership, refer to “Our business and operations would suffer in the event of significant disruptions or cyberattacks of our information technology systems or our failure to comply with laws, rules and regulations related to privacy and data protection.” in Part I, Item 1A, Risk Factors.
Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block]
The AIR Operating Partnership takes a risk-based approach to cybersecurity and has implemented cybersecurity policies throughout its operations that are designed to address cybersecurity threats and incidents. We regularly assesses risks from cybersecurity threats, monitors its information systems for potential vulnerabilities, and tests those systems according to our cybersecurity policies, standards, processes, and practices, which are integrated into our overall approach to enterprise risk management. To protect its information systems from cybersecurity threats, We use various security tools that help it identify, escalate, investigate, resolve, and recover from security incidents in a timely manner. Our cybersecurity program is designed to align with the National Institute of Technology Standards Cybersecurity Framework 2.0, which provides a structured approach for governing, assessing, identifying, and managing material risks from cybersecurity threats.
Cybersecurity Risk Management Third Party Engaged [Flag] true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] false
Cybersecurity Risk Board of Directors Oversight [Text Block]
Our Senior Vice President of Technology and Chief Technology Officer, in coordination with other members of AIR Operating Partnership’s management, is responsible for leading the assessment and management of cybersecurity threats. AIR Operating Partnership has implemented a governance program for its cybersecurity efforts. This includes regularly updating privacy notices, terms of use, and lease documents, as well as identifying responsible teammates to facilitate the implementation of cybersecurity priorities. These teammates report regularly to senior management on risk identification, safeguards, and mitigation steps. AIR Operating Partnership has developed and implemented policies to identify and mitigate cybersecurity risks and provides training to teammates at onboarding and annually thereafter. Updates are communicated to all teammates, and actionable guidance is provided when new risks arise. Our Board of Directors (i.e., the Board of Directors of AIR, with AIR as the sole member of the sole member of the General Partner) will receive updates on the AIR Operating Partnership’s cybersecurity profile risk assessment and technology environment and the broader technology landscape as and when appropriate.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Our Senior Vice President of Technology and Chief Technology Officer, in coordination with other members of AIR Operating Partnership’s management, is responsible for leading the assessment and management of cybersecurity threats. AIR Operating Partnership has implemented a governance program for its cybersecurity efforts. This includes regularly updating privacy notices, terms of use, and lease documents, as well as identifying responsible teammates to facilitate the implementation of cybersecurity priorities. These teammates report regularly to senior management on risk identification, safeguards, and mitigation steps. AIR Operating Partnership has developed and implemented policies to identify and mitigate cybersecurity risks and provides training to teammates at onboarding and annually thereafter. Updates are communicated to all teammates, and actionable guidance is provided when new risks arise. Our Board of Directors (i.e., the Board of Directors of AIR, with AIR as the sole member of the sole member of the General Partner) will receive updates on the AIR Operating Partnership’s cybersecurity profile risk assessment and technology environment and the broader technology landscape as and when appropriate.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Our Senior Vice President of Technology and Chief Technology Officer, in coordination with other members of AIR Operating Partnership’s management, is responsible for leading the assessment and management of cybersecurity threats. AIR Operating Partnership has implemented a governance program for its cybersecurity efforts. This includes regularly updating privacy notices, terms of use, and lease documents, as well as identifying responsible teammates to facilitate the implementation of cybersecurity priorities. These teammates report regularly to senior management on risk identification, safeguards, and mitigation steps. AIR Operating Partnership has developed and implemented policies to identify and mitigate cybersecurity risks and provides training to teammates at onboarding and annually thereafter. Updates are communicated to all teammates, and actionable guidance is provided when new risks arise. Our Board of Directors (i.e., the Board of Directors of AIR, with AIR as the sole member of the sole member of the General Partner) will receive updates on the AIR Operating Partnership’s cybersecurity profile risk assessment and technology environment and the broader technology landscape as and when appropriate.
Cybersecurity Risk Role of Management [Text Block]
Our Senior Vice President of Technology and Chief Technology Officer, in coordination with other members of AIR Operating Partnership’s management, is responsible for leading the assessment and management of cybersecurity threats. AIR Operating Partnership has implemented a governance program for its cybersecurity efforts. This includes regularly updating privacy notices, terms of use, and lease documents, as well as identifying responsible teammates to facilitate the implementation of cybersecurity priorities. These teammates report regularly to senior management on risk identification, safeguards, and mitigation steps. AIR Operating Partnership has developed and implemented policies to identify and mitigate cybersecurity risks and provides training to teammates at onboarding and annually thereafter. Updates are communicated to all teammates, and actionable guidance is provided when new risks arise. Our Board of Directors (i.e., the Board of Directors of AIR, with AIR as the sole member of the sole member of the General Partner) will receive updates on the AIR Operating Partnership’s cybersecurity profile risk assessment and technology environment and the broader technology landscape as and when appropriate.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Our Senior Vice President of Technology and Chief Technology Officer, in coordination with other members of AIR Operating Partnership’s management, is responsible for leading the assessment and management of cybersecurity threats. AIR Operating Partnership has implemented a governance program for its cybersecurity efforts. This includes regularly updating privacy notices, terms of use, and lease documents, as well as identifying responsible teammates to facilitate the implementation of cybersecurity priorities. These teammates report regularly to senior management on risk identification, safeguards, and mitigation steps. AIR Operating Partnership has developed and implemented policies to identify and mitigate cybersecurity risks and provides training to teammates at onboarding and annually thereafter. Updates are communicated to all teammates, and actionable guidance is provided when new risks arise. Our Board of Directors (i.e., the Board of Directors of AIR, with AIR as the sole member of the sole member of the General Partner) will receive updates on the AIR Operating Partnership’s cybersecurity profile risk assessment and technology environment and the broader technology landscape as and when appropriate.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
Our Senior Vice President of Technology and Chief Technology Officer, in coordination with other members of AIR Operating Partnership’s management, is responsible for leading the assessment and management of cybersecurity threats. AIR Operating Partnership has implemented a governance program for its cybersecurity efforts. This includes regularly updating privacy notices, terms of use, and lease documents, as well as identifying responsible teammates to facilitate the implementation of cybersecurity priorities. These teammates report regularly to senior management on risk identification, safeguards, and mitigation steps. AIR Operating Partnership has developed and implemented policies to identify and mitigate cybersecurity risks and provides training to teammates at onboarding and annually thereafter. Updates are communicated to all teammates, and actionable guidance is provided when new risks arise. Our Board of Directors (i.e., the Board of Directors of AIR, with AIR as the sole member of the sole member of the General Partner) will receive updates on the AIR Operating Partnership’s cybersecurity profile risk assessment and technology environment and the broader technology landscape as and when appropriate.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Our Senior Vice President of Technology and Chief Technology Officer, in coordination with other members of AIR Operating Partnership’s management, is responsible for leading the assessment and management of cybersecurity threats. AIR Operating Partnership has implemented a governance program for its cybersecurity efforts. This includes regularly updating privacy notices, terms of use, and lease documents, as well as identifying responsible teammates to facilitate the implementation of cybersecurity priorities. These teammates report regularly to senior management on risk identification, safeguards, and mitigation steps. AIR Operating Partnership has developed and implemented policies to identify and mitigate cybersecurity risks and provides training to teammates at onboarding and annually thereafter. Updates are communicated to all teammates, and actionable guidance is provided when new risks arise. Our Board of Directors (i.e., the Board of Directors of AIR, with AIR as the sole member of the sole member of the General Partner) will receive updates on the AIR Operating Partnership’s cybersecurity profile risk assessment and technology environment and the broader technology landscape as and when appropriate.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] true
v3.25.1
Summary of Significant Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Principles of Consolidation
Principles of Consolidation
We consolidate variable interest entities (“VIE”), in which we are considered the primary beneficiary. The primary beneficiary is the entity that has (i) the power to direct the activities that most significantly impact the entity’s economic performance, and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE. As of December 31, 2024 and 2023, the AIR Operating Partnership consolidated four VIE. Please see Note 13 for further discussion regarding our consolidated VIE.
Real Estate
Real Estate
Acquisitions
Upon the acquisition of real estate, we determine whether the purchase qualifies as an asset acquisition or meets the definition of an acquisition of a business. We generally recognize the acquisition of apartment communities or interests in partnerships that own communities at our cost, including the related transaction costs, as asset acquisitions.
We allocate the cost of apartment communities acquired based on the relative fair value of the assets acquired and liabilities assumed. The fair value of these assets and liabilities is determined using valuation techniques that rely on Level 2 and Level 3 inputs within the fair value framework. We determine the fair value of tangible assets, such as land, buildings, furniture, fixtures, and equipment using valuation techniques that consider comparable market transactions, replacement costs, and other available information. We determine the fair value of identified intangible assets or liabilities, which typically relate to in-place leases, using valuation techniques that consider the terms of the in-place leases, current market data for comparable leases, and our experience in leasing similar communities.
The intangible assets or liabilities related to in-place leases are comprised of: (a) the value of the above- and below-market leases in-place, measured over the period, including probable lease renewals for below-market leases, that the leases are expected to remain in effect; (b) the estimated unamortized portion of avoided leasing commissions and other costs that ordinarily would be incurred to originate the in-place leases; and (c) the value associated with leased apartment homes during an estimated absorption period, which estimates rental revenue that would not have been earned had leased apartment homes been vacant at the time of acquisition, assuming lease-up periods based on market demand and stabilized occupancy levels. The above- and below-market lease intangibles are amortized to rental revenue over the expected remaining terms of the associated leases, which include reasonably assured renewal periods. Other intangible assets related to in-place leases are amortized to depreciation and amortization over the expected remaining terms of the associated leases.
Capital Additions
We capitalize costs, including certain indirect costs, incurred in connection with our capital additions activities, including tangible apartment community improvements and replacements of existing apartment community components. Costs, including ordinary repairs, maintenance, and resident turnover costs, are charged to property operating expense as incurred.
For the years ended December 31, 2024, 2023, and 2022, we capitalized to buildings and improvements $13.3 million, $16.2 million, and $16.6 million of indirect costs, respectively.
Dispositions
A property is classified as held for sale when all of the following criteria for a plan of sale have been met: (i) management, having the authority to approve the action, commits to a plan to sell the asset or disposal group; (ii) the asset or disposal group is available for immediate sale in its present condition, subject only to terms that are usual and customary; (iii) an active program to locate a buyer and other actions required to complete the plan to sell the asset or disposal group have been initiated; (iv) the sale of the asset or disposal group is probable and is expected to be completed within one year; (v) the asset or disposal group is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and (vi) actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn, which is typically indicated by receipt of all non-refundable deposits from the buyer pursuant to a sales contract. Depreciation of assets ceases upon designation of a property as held for sale.
For sales of real estate, we evaluate whether the disposition represents a strategic shift that has, or will have, a major effect on our operations and financial results. If so, it is classified as discontinued operations in our consolidated financial statements for all periods presented. If not, it is presented in continuing operations in our consolidated financial statements. The disposal of an individual property generally will not represent a strategic shift that has a major effect, and therefore will typically not meet the criteria for classification as a discontinued operations.
Gain or loss on real estate dispositions are recognized when we no longer hold a controlling financial interest in the real estate and sufficient consideration has been received. Upon disposition, the related assets and liabilities are derecognized, and the gain or loss on disposition is recognized as the difference between the carrying amount of those assets and liabilities and the value of consideration received.
Impairment
Real estate and other long-lived assets to be held and used are individually evaluated for impairment when conditions exist that may indicate the carrying amount of a long-lived asset may not be recoverable. We use the held for sale impairment model for properties classified as held for sale, whereby an impairment charge is recognized if the carrying amount of the long-lived asset classified as held for sale exceeds its fair value less cost to sell. If an impairment indicator exists, we compare the asset’s expected future undiscounted cash flows to its current carrying value to assess whether impairment measurement is necessary. Upon determination that an impairment has occurred, we recognize an impairment loss to the extent the carrying amount exceeds the estimated fair value of the real estate and other long-lived assets.
The measurement of impairment is based on the fair value of the community and incorporates various estimates, assumptions, and market data, the most significant being rental rates, operating expense assumptions, expected hold period, capitalization rate, and purchase and sale agreements. We project future rental revenue growth rates using forecasted rates from third-party market research analytics. Property expense growth rates and capitalization rates are based on the apartment communities’ historical, current, and expected future operating results, existing operating expense assumptions, and operational strategies. These projections are adjusted to reflect current economic conditions and require considerable management judgment.
We did not recognize any such impairment during the years ended December 31, 2024 and 2022. During 2023, we recognized a non-cash impairment loss on real estate of $23.6 million.
Cash, Cash Equivalents and Restricted Cash
Cash and Cash Equivalents
We classify highly liquid investments with an original maturity of three months or less as cash equivalents. We maintain cash equivalents in financial institutions in excess of insured limits. We have not experienced any losses in these accounts in the past and believe that we are not exposed to significant credit risk because our accounts are deposited with major financial institutions.
Restricted Cash
As of December 31, 2024 and 2023, restricted cash primarily consists of capital replacement reserves, real estate tax and insurance escrow accounts held by lenders, and resident security deposits.
Goodwill
Goodwill
As of December 31, 2024 and 2023, goodwill associated with our reportable segments totaled $32.3 million. We perform an impairment test of goodwill annually, or when an interim triggering event occurs, by evaluating qualitative and quantitative factors, if necessary, to determine the likelihood that goodwill may be impaired. As a result of our annual impairment test, we determined that our goodwill was not impaired during the years ended December 31, 2024, 2023, and 2022.
Investments in Unconsolidated Real Estate Partnerships
Investment in Unconsolidated Real Estate Partnerships
We may own general and limited partner interests in partnerships that either directly, or through interests in other real estate partnerships, own apartment communities. We generally account for investments in real estate partnerships that we do not consolidate under the equity method. Under the equity method, we recognize our share of the earnings or losses of the entity for the periods presented, inclusive of our share of any impairments and disposition gains or losses recognized by and related to such entities, and we present such amounts within loss from unconsolidated real estate partnerships in our consolidated statements of operations. Investment in unconsolidated real estate partnerships is included as a separate line item in our consolidated balance sheets.
Investments in unconsolidated real estate partnerships are reviewed for impairments. An impairment loss is recorded when there is a decline in the fair value below the carrying value and we conclude such decline is other-than-temporary. An impairment loss is measured based on the excess of the carrying amount of an investment over its estimated fair value. We determine the fair value of investments in unconsolidated real estate partnerships using valuation techniques that consider the terms of the in-place leases, current market data for comparable leases, our experience in leasing similar communities, and current plans. We recognized no such impairments for the years ended December 31, 2024, 2023, and 2022.
The excess of our cost of the acquired partnership interests over our share of the partners’ equity or deficit are included as a part of our investments in unconsolidated real estate partnerships. We amortize the excess cost over the term of the joint venture agreement. The amortization is recorded as an adjustment of the amounts of earnings or losses we recognize from such unconsolidated real estate partnerships. Please see Note 7 for further discussion regarding our investment in unconsolidated real estate partnerships.
Noncontrolling Interests in Consolidated Real Estate Partnerships
Noncontrolling Interests in Consolidated Real Estate Partnerships
We generally report the unaffiliated partners’ interests in the net assets of our consolidated real estate partnerships as noncontrolling interests in consolidated real estate partnerships within the consolidated statements of partners’ (deficit) capital. If a real estate partnership includes redemption rights that are not within the AIR Operating Partnership’s control, the noncontrolling interest is included as temporary equity.
The assets of real estate partnerships consolidated by the AIR Operating Partnership must first be used to settle the liabilities of such consolidated real estate partnerships. These consolidated real estate partnerships’ creditors do not have recourse to the general credit of the AIR Operating Partnership.
Noncontrolling interests in consolidated real estate partnerships consist primarily of equity interests held by limited partners in consolidated real estate partnerships that have finite lives. We generally attribute to noncontrolling interests their share of income or loss of consolidated partnerships based on their proportionate interest in the results of operations of the partnerships, including their share of losses even if such attribution results in a deficit noncontrolling interest balance within our partners’ (deficit) capital accounts.
The terms of the related partnership agreements generally require the partnerships to be liquidated following the sale of the underlying real estate. As the general partner in these partnerships, we ordinarily control the execution of real estate sales and other events that could lead to the liquidation, redemption or other settlement of noncontrolling interests.
Changes in our ownership interest in consolidated real estate partnerships generally consist of our purchase of an additional interest in or the sale of our entire or partial interest in a consolidated real estate partnership. The effect on our partners’ (deficit) capital of our purchase of additional interests in consolidated real estate partnerships during the years ended December 31, 2024, 2023, and 2022, is shown in our consolidated statements of partners’ (deficit) capital. The effect on our partners’ (deficit) capital of sales of consolidated real estate or sales of our entire interest in consolidated real estate partnerships is reflected in our consolidated statements of operations as gains or losses on dispositions of real estate and accordingly the effect on our partners’ (deficit) capital is reflected within the amount of net (loss) income allocated to us and to noncontrolling interests. Upon our deconsolidation of a real estate partnership following the sale of our partnership interests or liquidation of the partnership following sale of the related apartment community, we derecognize any remaining noncontrolling interest of the associated partnership previously recorded in our consolidated balance sheets.
Noncontrolling Interests in the AIR Operating Partnership
Noncontrolling Interests in the AIR Operating Partnership
Noncontrolling interests in the AIR Operating Partnership consist of common OP Units held by limited partners and preferred OP Units. Holders of preferred OP Units participate in the AIR Operating Partnership’s income or loss only to the extent of their preferred distributions. The AIR Operating Partnership’s income or loss is allocated to the holders of common OP Units based on the weighted-average number of common OP Units outstanding during the period. During the years ended December 31, 2024, 2023, and 2022, common OP Units held by limited partners had a weighted-average economic ownership interest in the AIR Operating Partnership of 6.14%, 6.37%, and 6.25%, respectively. Please refer to Note 9 for further information regarding the items comprising noncontrolling interests in the AIR Operating Partnership.
Revenue from Leases
Revenue from Leases
We are a lessor primarily for residential leases. Our operating leases with residents may also provide that the resident reimburse us for certain costs, primarily the resident’s share of utilities expenses, incurred by the apartment community. These reimbursements represent revenue attributable to nonlease components for which the timing and pattern of recognition is the same as the revenue for the lease components. We use the practical expedient that allows us to account for the lease and nonlease components as a single component. Reimbursement and related expense are presented on a gross basis in our consolidated statements of operations, with the reimbursement included in rental and other property revenues attributable to real estate in our consolidated statements of operations. We recognize rental revenue attributed to lease components, net of any concessions, on a straight-line basis over the term of the lease.
Insurance
Insurance
We believe our insurance coverages insure our apartment communities adequately against the risk of loss attributable to fire, earthquake, hurricane, tornado, flood, and other perils. In addition, we have third-party insurance coverage (after self-insured retentions) that defray the costs of large workers’ compensation, health, and general liability exposures. We accrue losses based upon our estimates of the aggregate liability for uninsured losses incurred using certain actuarial assumptions followed in the insurance industry and based on our experience.
Depreciation and Amortization
Depreciation and Amortization
Depreciation for all tangible assets is calculated using the straight-line method over their estimated useful life. Acquired buildings and improvements are depreciated over a useful life based on the age, condition, and other physical characteristics of the asset. Furniture, fixtures, and equipment are generally depreciated over five years.
We depreciate capitalized costs using the straight-line method over the estimated useful life of the related improvement, which is generally 5, 15, or 30 years.
Purchased software and other costs related to software purchased or developed for internal use are capitalized during the application development stage and are amortized using the straight-line method over the estimated useful life of the software, generally three to ten years. Purchased equipment is recognized at cost and depreciated using the straight-line method over the estimated useful life of the asset, which is generally five years. Leasehold improvements are also recorded at cost and depreciated on a straight-line basis over the shorter of the asset’s estimated useful life or the term of the related lease.
Certain homogeneous items that are purchased in bulk on a recurring basis, such as appliances, are depreciated using group methods that reflect the average estimated useful life of the items in each group. Except in the case of apartment community casualties, where the net book value of the lost asset is written off in the determination of casualty gains or losses, we generally do not recognize any loss in connection with the replacement of an existing apartment community component because normal replacements are considered in determining the estimated useful life used in connection with our composite and group depreciation methods.
Share-Based Compensation
Share-Based Compensation
During 2024, we granted restricted stock awards with a weighted-average grant date fair value of $36.81 per unit, and we did not grant any stock options during 2024. On June 28, 2024, AIR completed the Merger Agreement, and as a result, all outstanding stock options and restricted stock awards were cancelled, resulting in the acceleration of share-based compensation. As of December 31, 2024, there were no stock options or restricted stock awards outstanding.
During 2024, we granted LTIP I units with a weighted-average grant date fair value of $40.59 per unit, and we did not grant any LTIP II units during 2024. In connection with the resignation of Terry Considine, certain LTIP units held by Mr. Considine vested, with all remaining unvested LTIP units being forfeited, resulting in the acceleration of share-based compensation. All vested LTIP I units were converted into common OP Units during the fourth quarter of 2024. As of December 31, 2024, there are 2,562,284 vested LTIP II units outstanding at a weighted-average grant date fair value of $9.81 per unit. Refer to Note 4 for further discussion on the departure of certain executive officers and distributions.
Total compensation cost recognized for share-based awards was as follows for the years ended December 31, 2024, 2023, and 2022 (in thousands):
202420232022
Share-based compensation expense (1)$22,931 $8,874 $7,463 
Capitalized share-based compensation (2)726 422 503 
Total share-based compensation
$23,657 $9,296 $7,966 
(1)During the year ended December 31, 2024, amounts are recorded in general and administrative expenses, property management expenses, other expenses, net, and merger-related costs in our consolidated statements of operations. During the years ended December 31, 2023 and 2022, amounts are recorded in general and administrative expenses and property management expenses in our consolidated statements of operations.
(2)Amounts are recorded in building and improvements in our consolidated balance sheets.
Refer to Note 3 and Note 4 for further discussion regarding the Blackstone transaction.
Income Taxes
Income Taxes
The AIR Operating Partnership is a partnership for federal income tax purposes and as such is not subject to federal income tax. The state and local tax laws may not conform to the United States federal income tax treatment, and AIR Operating Partnership may be subject to state or local taxation in various state or local jurisdictions, including those in which we transact business. Any taxes imposed on us reduce our operating cash flow and net (loss) income.
Certain of our operations, or a portion thereof, including certain property management and risk management activities, are conducted through taxable REIT subsidiaries, which are subsidiaries of the AIR Operating Partnership, and each of which we refer to as a TRS. A TRS is a corporate subsidiary that has elected to be a TRS instead of a REIT and, as such, is subject to United States federal corporate income tax. We use TRS entities to facilitate our ability to offer certain services and activities to our residents and investment partners that cannot be offered directly by a REIT.
For our TRS entities, deferred income taxes result from temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts reported for United States federal income tax purposes, and are measured using the enacted tax rates and laws that are expected to be in effect when the differences reverse. We reduce deferred tax assets by recording a valuation allowance when we determine, based on available evidence, that it is more likely than not that the assets will not be realized. We recognize the tax consequences associated with intercompany transfers between the AIR Operating Partnership and TRS entities when such transactions occur.
Earnings Per Unit
Earnings per Unit
We calculate earnings per unit based on the weighted-average number of common OP Units, common unit equivalents, and dilutive convertible securities outstanding during the period. The AIR Operating Partnership considers both common OP Units and equivalents, which have identical rights to distributions and undistributed earnings, to be common units for purposes of the earnings per unit computations. Please refer to Note 10 for further information regarding earnings per unit computations.
Use of Estimates
Use of Estimates
The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts included in the consolidated financial statements and accompanying notes thereto. Actual results could differ from those estimates.
Accounting Pronouncements Recently Issued
Accounting Pronouncements Recently Issued
In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2024-03, "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures," which requires disaggregated information surrounding entity's expenses. The standard is intended to benefit investors by providing more detailed information about the types of expenses in commonly presented expenses captions. This ASU is effective for public companies with annual periods beginning after December 15, 2026, and interim periods beginning after
December 15, 2027, with early adoption permitted. We are currently evaluating the guidance and its impact to the consolidated financial statements.
Accounting standards that have been issued by the FASB, or other standards-setting bodies, that are not yet effective or discussed above are not expected to have a material impact on our consolidated financial statements upon adoption.
v3.25.1
Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Accrued Liabilities and Others
As of December 31, 2024 and 2023, accrued liabilities and other was comprised of the following amounts (in thousands):
20242023
Lease liability
$137,318 $135,637 
Accrued expenses and other
171,819 161,257 
Total accrued liabilities and other$309,137 $296,894 
Schedule of Compensation Cost Recognized for Share-Based Awards
Total compensation cost recognized for share-based awards was as follows for the years ended December 31, 2024, 2023, and 2022 (in thousands):
202420232022
Share-based compensation expense (1)$22,931 $8,874 $7,463 
Capitalized share-based compensation (2)726 422 503 
Total share-based compensation
$23,657 $9,296 $7,966 
(1)During the year ended December 31, 2024, amounts are recorded in general and administrative expenses, property management expenses, other expenses, net, and merger-related costs in our consolidated statements of operations. During the years ended December 31, 2023 and 2022, amounts are recorded in general and administrative expenses and property management expenses in our consolidated statements of operations.
(2)Amounts are recorded in building and improvements in our consolidated balance sheets.
v3.25.1
Significant Transactions (Tables)
12 Months Ended
Dec. 31, 2024
Significant Transactions [Abstract]  
Schedule of Acquisition Summarized information regarding these acquisitions is set forth in the table below (dollars in thousands):
Number of apartment communities2
Number of apartment homes743
Commercial space acquired (in square feet)
50,500 
Purchase price$236,500 
Capitalized transaction costs3,809 
Total consideration
$240,309 
Land$51,548 
Building and improvements177,140 
Intangible assets (1)
11,877 
Below-market lease liabilities (1)
(256)
Total consideration
$240,309 
(1)At the time of acquisition, intangible assets and below-market lease liabilities for the Bethesda, Maryland apartment community acquisition had a weighted-average term of 4.7 years and 0.5 years, respectively. At the time of acquisition, intangible assets and below-market lease liabilities for the Raleigh, North Carolina apartment community acquisition had a weighted-average term of 0.5 years.
Summary of Apartment Community Sold
Sold apartment communities during the years ended December 31, 2024, 2023, and 2022, are summarized below (dollars in thousands):
2024 (1)
20232022
Number of apartment communities sold
1318
Number of apartment homes sold3592573,364
Gain on apartment community sales (2)
$3,199 $— $939,806 
(1)    The apartment community acquired in Bethesda, Maryland was subsequently contributed to our joint venture with a global institutional investor (the “Core JV”), which represents an apartment community disposition under GAAP. Upon contribution of the apartment community and the related non-recourse property debt to the Core JV, we received $27.5 million in cash consideration. See Note 7 for discussion regarding our joint venture transactions.
(2)    The apartment communities sold during the year ended December 31, 2023 generated net proceeds of $52.1 million, which approximated their carrying value.
v3.25.1
Leases (Tables)
12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Schedule of Lease Income for Operating Leases Our total lease income was comprised of the following amounts for all operating leases for the years ended December 31, 2024, 2023, and 2022 (in thousands):
202420232022
Fixed lease income$728,416 $752,068 $715,060 
Variable lease income55,795 56,060 47,358 
Total lease income$784,211 $808,128 $762,418 
Schedule of Future Minimum Annual Rental Payments Receivable Under Residential and Commercial Leases As of December 31, 2024, future minimum annual rental payments we are contractually obligated to receive under residential and commercial leases, excluding such extension options, are as follows (in thousands):
2025$456,674 
2026102,868 
202715,520 
202811,387 
20299,467 
Thereafter25,958 
Total$621,874 
Schedule of Minimum Annual Rental Payments Under these Operating Leases As of December 31, 2024, minimum annual rental payments under these operating leases, reconciled to the lease liability included in accrued liabilities and other in our consolidated balance sheets, are as follows (in thousands):
2025$8,217 
20268,419 
20278,528 
20288,501 
20297,787 
Thereafter1,701,047 
Total1,742,499 
Less: Discount1,605,181 
Total lease liability$137,318 
v3.25.1
Debt (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Non-Recourse Property Loans Payable Related to Properties
The following table summarizes our total consolidated indebtedness as of December 31, 2024 and 2023 (in thousands):
2024
2023
Secured debt:
Fixed-rate property debt due July 2025 to January 2055 (1)
$2,144,797 $2,236,975 
Variable-rate property debt due July 2029 to October 2029 (2)
4,140,409 — 
Total non-recourse property debt6,285,206 2,236,975 
Debt issuance costs, net of accumulated amortization(43,337)(13,184)
Total non-recourse property debt, net$6,241,869 $2,223,791 
Unsecured debt:
Term loans due December 2024 to April 2026
$— $475,000 
Revolving credit facility borrowings due April 2025
— 115,000 
4.58% Notes payable due June 2027
— 100,000 
4.77% Notes payable due June 2029
— 100,000 
4.84% Notes payable due June 2032
— 200,000 
Total unsecured debt— 990,000 
Debt issuance costs, net of accumulated amortization— (3,447)
Total unsecured debt, net 986,553 
Total indebtedness$6,241,869 $3,210,344 
(1)The stated rates on our fixed-rate property debt are between 2.7% to 7.1%.
(2)As of December 31, 2024, $3.0 billion of our variable-rate property debt is economically hedged at an effective interest rate of 6.92% via interest rate swaps. Additionally, $1.0 billion of our variable-rate property debt is economically hedged at a maximum effective interest rate of 7.03% via interest rate caps. The remaining $0.1 billion of our variable-rate property debt is economically hedged at a maximum effective interest rate of 7.99% via an interest rate cap.
Scheduled of Principal Amortization and Maturity Payments for Outstanding Debt Balances
As of December 31, 2024, the scheduled principal amortization and maturity payments for our outstanding debt balances were as follows (in thousands):
AmortizationMaturitiesTotal
2025
$21,400 $300,496 $321,896 
2026
18,452 161,950 180,402 
2027
19,318 63,098 82,416 
2028
13,320 189,652 202,972 
2029 (1)
13,673 4,566,053 4,579,726 
Thereafter154,080 763,714 917,794 
Total $240,243 $6,044,963 $6,285,206 
(1) Amounts presented above are inclusive of extension options on our non-recourse variable-rate property debt and fixed-rate property debt, as outlined above.
v3.25.1
Investments in Unconsolidated Real Estate Partnerships (Tables)
12 Months Ended
Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Equity Method Investments
Virginia JV (1)Value-Add JV (2)Core JV
Initial formation dateOctober 2021June 2023July 2023
AIR Operating Partnership Ownership
20%30%53%
Outside entities ownership80%70%47%
Number of apartment communities3112
Apartment homes
1,7484443,909
(1)Our partner in the Virginia JV is an affiliate of Blackstone.
(2)A global asset manager acquired a 70% legal ownership in the Huntington Gateway property, but the AIR Operating Partnership is entitled to 50% of the net cash flows from operations, and various fees for providing property management, construction, and corporate services to the joint venture.
The following tables summarize certain relevant financial information with respect to our investment in unconsolidated joint ventures (in thousands):
December 31, 2024
Virginia JVValue-Add JVCore JV
Net real estate
$450,164 $137,071 $1,383,264 
Other assets, net
7,226 5,757 33,009 
Total assets$457,390 $142,828 $1,416,273 
Third-party debt$395,000 $89,282 $891,097 
Accrued liabilities and other
5,643 1,667 14,721 
Total liabilities$400,643 $90,949 $905,818 
Total equity$56,747 $51,879 $510,455 
AIR Operating Partnership's investment in balance (1)
$13,501 $30,039 $276,588 
(1)    Our investment in balance includes certain basis differences that are subject to amortization. Our investment in unconsolidated real estate partnerships in our consolidated balance sheets also includes $21.2 million related to two immaterial unconsolidated investments.
December 31, 2023
Virginia JVValue-Add JVCore JV
Net real estate
$467,020 $131,339 $1,258,307 
Other assets, net
7,061 7,368 41,882 
Total assets$474,081 $138,707 $1,300,189 
Third-party debt$395,000 $88,741 $793,910 
Accrued liabilities and other
4,070 2,528 10,298 
Total liabilities$399,070 $91,269 $804,208 
Total equity$75,011 $47,438 $495,981 
AIR Operating Partnership's investment in balance (1)
$17,212 $28,606 $268,931 
(1)    Our investment in balance includes certain basis differences that are subject to amortization. Our investment in unconsolidated real estate partnerships in our consolidated balance sheets also includes $21.3 million related to two immaterial unconsolidated investments.
The following tables summarize the financial information related to the Joint Ventures for the years ended December 31, 2024, 2023, and 2022 (in thousands):
December 31, 2024
Virginia JVValue-Add JVCore JV
Total revenues$47,576 $13,409 $125,104 
Total expenses59,065 16,442 149,717 
Net loss$(11,489)$(3,033)$(24,613)
AIR Operating Partnership's loss from unconsolidated real estate partnerships
$(2,356)$(811)$(13,868)
December 31, 2023
Virginia JVValue-Add JVCore JV
Total revenues$44,725 $6,665 $51,341 
Total expenses64,779 12,969 94,141 
Net loss$(20,054)$(6,304)$(42,800)
AIR Operating Partnership's loss from unconsolidated real estate partnerships
$(3,999)$(2,772)$(22,877)
December 31, 2022
Virginia JVValue-Add JVCore JV
Total revenues$41,422 $— $— 
Total expenses57,316 — — 
Net loss$(15,894)$— $— 
AIR Operating Partnership's loss from unconsolidated real estate partnerships
$(3,504)$— $— 
v3.25.1
Partners’ (Deficit) Capital (Tables)
12 Months Ended
Dec. 31, 2024
Partners' Capital [Abstract]  
Schedule of Classes of Preferred OP Units As of December 31, 2024 and 2023, the AIR Operating Partnership had the following classes of preferred OP Units (stated at their redemption values, in thousands, except unit and per unit data):
Distributions per AnnumUnits Issued and 
Outstanding
Redemption Values
Class of Preferred UnitsPercentPer Unit2024202320242023
Class One8.75 %$8.00 90,000 90,000 $8,229 $8,229 
Class Two1.92 %$0.48 5,368 5,368 132 132 
Class Three7.88 %$1.97 472,281 1,310,902 11,807 32,772 
Class Four8.00 %$2.00 644,954 644,954 16,124 16,124 
Class Six8.50 %$2.13 769,585 769,585 19,240 19,240 
Class Seven7.87 %$1.97 20,970 25,715 524 643 
Total2,003,158 2,846,524 $56,056 $77,140 
Schedule of Reconciliation of Preferred OP Units
The following table presents a rollforward of the AIR Operating Partnership’s preferred OP Units’ redemption value and accrued distributions (in thousands):
Balance at January 1, 2024$77,140 
Preferred distributions(5,103)
Redemption of preferred units(21,084)
Net income allocated to preferred units5,874 
Balance at December 31, 2024
$56,827 
v3.25.1
Earnings Per Unit (Tables)
12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Schedule of Reconciliations of Numerator and Denominator in Calculations of Basic and Diluted Earnings per Share and per Unit
Reconciliations of the numerator and denominator in the calculations of basic and diluted earnings per unit for the years ended December 31, 2024, 2023, and 2022 are as follows (in thousands, except per unit data):
202420232022
Earnings per unit
Numerator:
Basic net (loss) income attributable to the AIR Operating Partnership’s common unitholders
$(367,019)$677,165 $962,414 
Effect of dilutive instruments— 6,280 6,388 
Dilutive net (loss) income attributable to the AIR Operating Partnership’s common unitholders
$(367,019)$683,445 $968,802 
 
Denominator – units:
Basic weighted-average common units outstanding154,016157,687164,141
Dilutive common unit equivalents outstanding— 2,3212,494
Dilutive weighted-average common units outstanding154,016160,008166,635
Earnings per unit – basic $(2.38)$4.29 $5.86 
Earnings per unit – diluted$(2.38)$4.27 $5.81 
v3.25.1
Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Schedule of Fair Value for Interest Rate Options and swaps
The following table summarizes investments measured at fair value on a recurring basis, which are presented in other assets, net, and accrued liabilities and other in our consolidated balance sheets (in thousands).
As of December 31, 2024
As of December 31, 2023
Total Fair ValueLevel 1Level 2Level 3Total Fair ValueLevel 1Level 2Level 3
Interest rate swaps - pay-fixed, receive floating$66 $— $66 $— $14,679 $— $14,679 $— 
Interest rate swaps - pay-floating, receive fixed$ $— $— $— $465 $— $465 $— 
Interest rate swaps - forward starting$ $— $— $— $331 $— $331 $— 
Interest rate caps - net (1)
$5,262 $— $5,262 $— $ $— $— $— 
(1)The fair value of interest rate caps, net, is inclusive of $11.0 million related to interest rate caps, offset partially by $5.8 million related to sold interest rate caps.
Schedule of Carrying Value and Fair Value of Non-recourse Property Debt
We classify the fair value of our fixed-rate non-recourse property debt, unsecured notes payable, seller financing notes receivable, and preferred equity investment within Level 2 of the GAAP fair value hierarchy, as summarized in the following table (in thousands):
As of December 31, 2024As of December 31, 2023
Carrying ValueFair ValueCarrying ValueFair Value
Fixed-rate non-recourse property debt
$2,144,797 $1,963,083 $2,236,975 $2,001,532 
Unsecured notes payable (1)
$— $— $400,000 $384,244 
Seller financing note receivable, net
$33,151 $32,999 $32,459 $33,042 
Preferred equity investment
$23,872 $25,513 $22,693 $23,562 
(1)In the second quarter of 2024, in connection with the Closing, we repaid $400.0 million of outstanding principal on our fixed-rate Notes Payable. See Note 6 for discussion regarding our financing transactions during the period.
v3.25.1
Derivative Financial Instruments and Hedging Activities (Tables)
12 Months Ended
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Financial Instruments
The following tables summarize our derivative financial instruments (dollars in thousands):
As of December 31, 2024
Number ofAggregate NotionalDerivative Assets
(included in Other Assets, net)
Derivative Liabilities
(included in Accrued Liabilities and Other)
InstrumentsAmountFair Value
Derivatives not designated as hedging instruments:
Interest rate swaps - pay-fixed, receive-floating
15$4,550,000 $10,177 $(10,111)
Interest rate caps - net (1)
6$1,148,500 $11,025 $(5,763)
(1)Interest rate caps, net, is inclusive of four interest rate caps with an aggregate notional value of $4.1 billion, offset partially by two sold interest rate caps with an aggregate notional value of $3.0 billion.
As of December 31, 2023
Number ofAggregate NotionalDerivative Assets
(included in Other Assets, net)
Derivative Liabilities
(included in Accrued Liabilities and Other)
InstrumentsAmountFair Value
Derivatives not designated as hedging instruments:
Interest rate swaps - pay-fixed, receive-floating
7$555,000 $15,266 $(587)
Interest rate swaps - pay-floating, receive-fixed
2$80,000 $472 $(7)
Interest rate swaps - forward starting
1$50,000 $331 $— 
v3.25.1
Variable Interest Entities (Tables)
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Variable Interest Entities
The table below summarizes apartment community information regarding VIEs consolidated by the AIR Operating Partnership:
December 31, 2024December 31, 2023
VIEs with interests in apartment communities33
Apartment communities owned by VIEs1414
Apartment homes in communities owned by VIEs4,8664,866
Assets and liabilities of VIEs are summarized in the table below (in thousands):
December 31, 2024December 31, 2023
ASSETS:
Net real estate$972,802 $1,013,770 
Cash and cash equivalents45,554 41,219 
Restricted cash1,876 2,179 
Other assets, net23,904 22,546 
LIABILITIES:
Non-recourse property debt, net$1,309,959 $1,196,280 
Accrued liabilities and other36,743 34,903 
v3.25.1
Business Segments (Tables)
12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Schedule of Information for Reportable Segments To reflect how the CODM evaluates the business, prior period segment information has been recast to conform with our reportable segment composition as of December 31, 2024 (in thousands):
Same
Store
Other
Real Estate
Proportionate
and Other
Adjustments (1)
Corporate and
Amounts Not
Allocated to
Segments (2)
Consolidated
Year ended December 31, 2024:
Total revenues$683,735 $79,626 $22,320 $14,920 $800,601 
Property management and operating expenses
178,483 27,967 30,185 39,035 275,670 
Other operating expenses not allocated to segments (3)— — — 431,120 431,120 
Total operating expenses178,483 27,967 30,185 470,155 706,790 
Proportionate property net operating income (loss)505,252 51,659 (7,865)(455,235)93,811 
Other items included in income before income tax benefit (4)
— — — (451,957)(451,957)
Income (loss) before income tax benefit
$505,252 $51,659 $(7,865)$(907,192)$(358,146)
Same
Store
Other
Real Estate
Proportionate
and Other
Adjustments (1)
Corporate and
Amounts Not
Allocated to
Segments (2)
Consolidated
Year ended December 31, 2023:
Total revenues$664,022 $55,696 $85,862 $14,456 $820,036 
Property management and operating expenses
171,610 20,111 43,640 40,471 275,832 
Other operating expenses not allocated to segments (3)— — — 393,976 393,976 
Total operating expenses171,610 20,111 43,640 434,447 669,808 
Proportionate property net operating income (loss)492,412 35,585 42,222 (419,991)150,228 
Other items included in income before income tax expense (4)— — — 541,486 541,486 
Income before income tax expense
$492,412 $35,585 $42,222 $121,495 $691,714 
Same
Store
Other
Real Estate
Proportionate
and Other
Adjustments (1)
Corporate and
Amounts Not
Allocated to
Segments (2)
Consolidated
Year ended December 31, 2022:
Total revenues$578,123 $15,641 $126,137 $53,822 $773,723 
Property management and operating expenses
151,816 7,980 51,501 49,967 261,264 
Other operating expenses not allocated to segments (3)— — — 384,957 384,957 
Total operating expenses151,816 7,980 51,501 434,924 646,221 
Proportionate property net operating income (loss)426,307 7,661 74,636 (381,102)127,502 
Other items included in income before income tax expense (4)
— — — 846,471 846,471 
Income before income tax expense
$426,307 $7,661 $74,636 $465,369 $973,973 
(1)Represents adjustments to: (i) exclude AIR Operating Partnership’s proportionate share of the results of unconsolidated apartment communities, which is excluded in the related consolidated amounts, and (ii) include the noncontrolling interests in consolidated real estate partnerships’ proportionate share of the results of communities, which is included in the related consolidated amounts. Also includes the reclassification of utility reimbursements from revenues to property operating expenses for the purpose of evaluating segment results. Utility reimbursements are included in rental and other property revenues in our consolidated statements of operations prepared in accordance with GAAP.
(2)Includes: (i) the operating results of apartment communities sold during the periods shown or held for sale at the end of the period, if any, (ii) property management revenues, which are not part of our segment performance measure, property management expenses and casualty gains and losses, which are included in consolidated property management and operating expenses and are not part of our segment performance measure, and (iii) the depreciation of capitalized costs of non-real estate assets.
(3)Includes depreciation and amortization, general and administrative expenses, and other expenses, net, and may also include write-offs of deferred leasing commissions, which are not included in our measure of segment performance.
(4)Includes interest income, interest expense, loss on extinguishment of debt, gain on dispositions of real estate and impairments of real estate, net, loss from unconsolidated real estate partnerships, gain on derivative instruments, net, and merger-related costs.
Schedule of Property Management and Operating Expenses The following table presents total property operating expenses, by type, that has been allocated to our segments on a proportionate basis. To reflect how the CODM evaluates the business, prior period segment information has been recast to conform with our reportable segment composition as of December 31, 2024 (in thousands):
Year Ended December 31, 2024
Year Ended December 31, 2023
Year Ended December 31, 2022
Same
Store
Other
Real Estate
Same
Store
Other
Real Estate
Same
Store
Other
Real Estate
Operating expenses (1)
$79,213 $14,056 $77,774 $10,172 $72,636 $4,789 
Utility expenses, net of reimbursement
7,703 1,596 9,391 1,185 9,897 368 
Real estate taxes
73,345 10,942 69,404 7,479 59,885 2,595 
Insurance
18,222 1,373 15,041 1,275 9,398 228 
Total property operating expenses
$178,483 $27,967 $171,610 $20,111 $151,816 $7,980 
(1)Includes onsite payroll, repairs and maintenance, software and technology expenses, marketing, expensed turnover costs, and other property related operating expenses.
Schedule of Reconciliation of Assets from Segment to Consolidated
The assets of our segments and the consolidated assets not allocated to our segments were as follows (in thousands):
December 31, 2024December 31, 2023
Same Store$4,681,532 $4,841,335 
Other Real Estate846,423 779,456 
Corporate and other assets (1)1,047,587 513,961 
Total consolidated assets$6,575,542 $6,134,752 
(1)Includes the assets not allocated to our segments including: (i) corporate assets and (ii) properties sold or classified as held for sale.
Schedule of Capital Additions Related to Segments
For the years ended December 31, 2024, 2023, and 2022, capital additions related to our segments were as follows (in thousands):
202420232022
Same Store$129,617 $139,848 $147,255 
Other Real Estate18,544 15,726 2,451 
Total capital additions$148,161 $155,574 $149,706 
v3.25.1
Basis of Presentation and Organization (Details)
Dec. 31, 2024
apartment
state
geographicConcerntraion
property
shares
Real Estate Properties [Line Items]  
Apartment homes 21,294
Number Of Geographic Concentrations | geographicConcerntraion 8
AIR Operating Partnership  
Real Estate Properties [Line Items]  
Common operating partnership units and equivalents outstanding, (in shares) | shares 156,221,778
Partially Owned Properties  
Real Estate Properties [Line Items]  
Number of states and district | state 10
Number of apartment communities | property 77
Apartment homes 27,395
Percentage of average ownership of portfolio 81.00%
v3.25.1
Summary of Significant Accounting Policies - Narrative (Details)
12 Months Ended
Dec. 31, 2024
USD ($)
entity
$ / shares
shares
Dec. 31, 2023
USD ($)
entity
Dec. 31, 2022
USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Number of consolidated VIEs | entity 4 4  
Indirect costs capitalized $ 13,300,000 $ 16,200,000 $ 16,600,000
Provision for real estate impairment loss 0 0 0
Goodwill $ 32,286,000 32,286,000  
LTIP Units      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Weighted average grant fair value granted (in dollars per share) | $ / shares $ 40.59    
Number of share granted (in shares) | shares 0    
Number of share vested (in shares) | shares 2,562,284    
Weighted average grant fair value vested (in dollars per share) | $ / shares $ 9.81    
Restricted Stock      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Weighted average grant fair value granted (in dollars per share) | $ / shares $ 36.81    
Number of share granted (in shares) | shares 0    
Other Real Estate      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Provision for real estate impairment loss $ 0 $ 23,600,000 $ 0
Minimum      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 5 years    
Median      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 15 years    
Maximum      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 30 years    
Furniture, Fixtures and Equipment      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 5 years    
Software and Software Development Costs | Minimum      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 3 years    
Software and Software Development Costs | Maximum      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 10 years    
Purchased Equipment      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 5 years    
AIMCO      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Weighted average ownership interest 6.14% 6.37% 6.25%
v3.25.1
Summary of Significant Accounting Policies - Schedule of Accrued Liabilities and Other (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Lease liability $ 137,318 $ 135,637
Accrued expenses and other 171,819 161,257
Total accrued liabilities and other $ 309,137 $ 296,894
v3.25.1
Summary of Significant Accounting Policies - Schedule of Compensation Cost Recognized for Share-Based Awards (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accounting Policies [Abstract]      
Share-based compensation expense $ 22,931 $ 8,874 $ 7,463
Capitalized share-based compensation 726 422 503
Total share-based compensation $ 23,657 $ 9,296 $ 7,966
v3.25.1
Blackstone Transaction (Details) - USD ($)
$ / shares in Thousands, $ in Millions
3 Months Ended 12 Months Ended
Jun. 28, 2024
Jun. 30, 2024
Dec. 31, 2024
Class of Warrant or Right [Line Items]      
Class of warrant or right, stock options cancelled and converted to right to receive, amount $ 25.7    
Preferred stock, redemption price (in dollars per share)     $ 100
Preferred stock, redemption amount   $ 2.0  
Repayments of debt     $ 1,700.0
Merger Agreement      
Class of Warrant or Right [Line Items]      
Business combination, acquisition related costs     $ 169.4
Restricted Stock      
Class of Warrant or Right [Line Items]      
Share-based payment arrangement, accelerated cost   8.6  
Restricted Stock | General and Administrative Expense      
Class of Warrant or Right [Line Items]      
Share-based payment arrangement, accelerated cost   5.2  
Restricted Stock | Property Management Expenses      
Class of Warrant or Right [Line Items]      
Share-based payment arrangement, accelerated cost   $ 3.4  
v3.25.1
Significant Transactions - Narrative (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Aug. 01, 2024
USD ($)
$ / shares
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
ft²
$ / shares
Mar. 31, 2024
$ / shares
Dec. 31, 2024
USD ($)
property
Dec. 31, 2023
USD ($)
$ / shares
Dec. 31, 2022
USD ($)
$ / shares
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]              
Write-off of pre-development, development, and redevelopment costs         $ 14,329 $ 0 $ 0
Dividends and distributions paid (in dollars per share) | $ / shares       $ 0.45   $ 1.80 $ 1.80
Payment of distributions to Limited Partners         $ 7,765 $ 18,108 $ 17,849
Incremental compensation expense   $ 9,600          
LTIP Units              
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]              
Share-based payment arrangement, accelerated cost   $ 7,900          
Special Distribution              
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]              
Dividends and distributions paid (in dollars per share) | $ / shares $ 5.80   $ 7.70        
Payment of distributions to Limited Partners $ 892,000   $ 1,200,000        
Raleigh North Carolina              
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]              
Number of apartment communities | property         1    
Bethesda Maryland              
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]              
Number of apartment communities | property         1    
Area of real estate property | ft²     50,500        
v3.25.1
Significant Transactions - Schedule of Acquisition (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
property
Dec. 31, 2024
USD ($)
ft²
property
apartment
Raleigh North Carolina And Bethesda Maryland    
Business Acquisition [Line Items]    
Number of apartment communities | property   2
Number of apartment homes | apartment   743
Commercial space acquired (in square feet) | ft²   50,500
Raleigh North Carolina And Bethesda Maryland | Apartment Community    
Business Acquisition [Line Items]    
Purchase price   $ 236,500
Capitalized transaction costs   3,809
Total consideration   240,309
Land   51,548
Building and improvements   177,140
Intangible assets   11,877
Below-market lease liabilities   (256)
Total consideration   $ 240,309
Raleigh North Carolina    
Business Acquisition [Line Items]    
Number of apartment communities | property   1
Raleigh North Carolina | Below-market leases    
Business Acquisition [Line Items]    
Weighted-average term   6 months
Bethesda Maryland    
Business Acquisition [Line Items]    
Number of apartment communities | property   1
Number of apartment homes | property 359,000  
Bethesda Maryland | Below-market leases    
Business Acquisition [Line Items]    
Weighted-average term   6 months
Bethesda Maryland | Intangible Assets    
Business Acquisition [Line Items]    
Weighted-average term   4 years 8 months 12 days
Bethesda Maryland | Apartment Community    
Business Acquisition [Line Items]    
Purchase price $ 150,000  
v3.25.1
Significant Transactions - Schedule of Apartment Community Dispositions (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
property
apartment
Dec. 31, 2023
USD ($)
property
Dec. 31, 2022
USD ($)
property
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Number of apartment homes sold | apartment   21,294    
Gain on apartment community sales   $ 3,951 $ 677,740 $ 939,806
Core JV | Bethesda Maryland        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Gain on apartment community sales $ 3,200      
Proceeds from real estate and real estate joint ventures $ 27,500 $ 27,500    
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Wholly And Partially Owned Consolidated Properties        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Number of apartment communities sold | property   1 3 18
Number of apartment homes sold | property   359 257 3,364
Gain on apartment community sales   $ 3,199 $ 0 $ 939,806
Proceeds from divestiture of businesses     $ 52,100  
v3.25.1
Leases - Lease Income for Operating Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Leases [Abstract]      
Fixed lease income $ 728,416 $ 752,068 $ 715,060
Variable lease income 55,795 56,060 47,358
Total lease income $ 784,211 $ 808,128 $ 762,418
Operating lease, lease income, statement of income or comprehensive income Other assets, net Other assets, net Other assets, net
v3.25.1
Leases - Future Minimum Annual Payments Receivable Under Residential and Commercial Leases (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Leases [Abstract]  
2025 $ 456,674
2026 102,868
2027 15,520
2028 11,387
2029 9,467
Thereafter 25,958
Total $ 621,874
v3.25.1
Leases - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Total lease liability $ 137,318    
Residential Lease      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Lessee, operating lease, term of contract 9 months 12 days    
Ground and Office Leases      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Lease cost $ 21,500 $ 21,500 $ 15,400
Ground Lease      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Weighted average remaining term 86 years 3 months 18 days    
Operating lease, weighted average discount rate, percent 6.90%    
Total lease liability $ 130,700    
Office Lease      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Weighted average remaining term 4 years 7 months 6 days    
Operating lease, weighted average discount rate, percent 4.00%    
v3.25.1
Leases - Aggregate Minimum Lease Payments (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Leases [Abstract]  
2025 $ 8,217
2026 8,419
2027 8,528
2028 8,501
2029 7,787
Thereafter 1,701,047
Total 1,742,499
Less: Discount 1,605,181
Total lease liability $ 137,318
Operating lease, liability, statement of financial position Accrued liabilities and other
v3.25.1
Debt - Schedule of Debt Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Sep. 30, 2024
Jul. 31, 2024
Jun. 30, 2024
Dec. 31, 2023
Debt Instrument [Line Items]          
Long-term debt, gross $ 6,044,963        
Total indebtedness 6,241,869       $ 3,210,344
Secured Debt          
Debt Instrument [Line Items]          
Debt Issuance Costs, Net (43,337)       (13,184)
Total indebtedness 6,241,869       2,223,791
Unsecured Debt          
Debt Instrument [Line Items]          
Debt Issuance Costs, Net 0       (3,447)
Total indebtedness 0       986,553
Unsecured Debt Gross          
Debt Instrument [Line Items]          
Long-term debt, gross 0       990,000
Term Loan | Unsecured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross 0       475,000
Revolving Credit Facility | Unsecured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross 0       115,000
Fixed-rate property debt | Secured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross 2,144,797       2,236,975
Total indebtedness 2,200,000        
Variable Rate Property Debt | Secured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross 4,140,409 $ 4,100,000     0
Variable Rate Property Debt | Secured Debt | Interest rate caps - net | Designated as Hedging Instrument          
Debt Instrument [Line Items]          
Long-term debt, gross $ 3,000,000        
Debt instrument, interest rate, effective percentage 6.92%        
Variable Rate Property Debt | Secured Debt | Interest Rate Cap | Designated as Hedging Instrument          
Debt Instrument [Line Items]          
Long-term debt, gross $ 1,000,000        
Variable Rate Property Debt | Secured Debt | Maximum | Interest Rate Cap | Designated as Hedging Instrument          
Debt Instrument [Line Items]          
Debt instrument, interest rate, stated percentage 7.03%        
Fixed-rate non-recourse property debt | Secured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross $ 6,285,206       2,236,975
4.58% Notes payable due June 2027 | Unsecured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross $ 0       $ 100,000
Debt instrument, interest rate, stated percentage 4.58%       4.58%
4.77% Notes payable due June 2029 | Unsecured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross $ 0       $ 100,000
Debt instrument, interest rate, stated percentage 4.77%       4.77%
4.84% Notes payable due June 2032 | Unsecured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross $ 0       $ 200,000
Debt instrument, interest rate, stated percentage 4.84%       4.84%
Fixed Rate Property | Secured Debt | Minimum          
Debt Instrument [Line Items]          
Debt instrument, interest rate, stated percentage 2.70%        
Fixed Rate Property | Secured Debt | Maximum          
Debt Instrument [Line Items]          
Debt instrument, interest rate, stated percentage 7.10%        
Variable-Rate Non-Recourse Property Debt, Maturing In July 2026 | Secured Debt          
Debt Instrument [Line Items]          
Long-term debt, gross     $ 148,500    
Variable-Rate Non-Recourse Property Debt, Maturing In July 2026 | Secured Debt | Interest Rate Cap | Designated as Hedging Instrument          
Debt Instrument [Line Items]          
Long-term debt, gross $ 100,000        
Variable-Rate Non-Recourse Property Debt, Maturing In July 2026 | Secured Debt | Maximum | Interest Rate Cap          
Debt Instrument [Line Items]          
Debt instrument, interest rate, stated percentage       7.10%  
Variable-Rate Non-Recourse Property Debt, Maturing In July 2026 | Secured Debt | Maximum | Interest Rate Cap | Designated as Hedging Instrument          
Debt Instrument [Line Items]          
Debt instrument, interest rate, stated percentage 7.99%        
v3.25.1
Debt - Narrative (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Sep. 18, 2024
USD ($)
extension
Jul. 26, 2024
USD ($)
extension
Jun. 28, 2024
USD ($)
extension
Sep. 30, 2024
USD ($)
Jul. 31, 2024
USD ($)
extension
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
apartment
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 30, 2024
Line of Credit Facility [Line Items]                    
Long-term debt, gross             $ 6,044,963,000      
Long term debt             6,241,869,000 $ 3,210,344,000    
Repayments of debt             1,700,000,000      
Gain (Loss) on Extinguishment of Debt             (36,888,000) (2,008,000) $ (23,636,000)  
Secured Debt                    
Line of Credit Facility [Line Items]                    
Long term debt             6,241,869,000 2,223,791,000    
Net Incremental Financing | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross       $ 3,000,000,000.0   $ 3,000,000,000.0        
Fixed Rate Property Debt                    
Line of Credit Facility [Line Items]                    
Aggregate gross book value             $ 1,700,000,000      
Fixed Rate Property Debt | Pledged as Collateral                    
Line of Credit Facility [Line Items]                    
Number of apartment communities | apartment             22      
Fixed Rate Property Debt | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross             $ 2,144,797,000 2,236,975,000    
Long term debt             2,200,000,000      
Debt, weighted average interest rate       3.80%   3.80%        
Variable Rate Property Debt                    
Line of Credit Facility [Line Items]                    
Aggregate gross book value             $ 3,600,000,000      
Variable Rate Property Debt | Pledged as Collateral                    
Line of Credit Facility [Line Items]                    
Number of apartment communities | apartment             39      
Variable Rate Property Debt | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross       $ 4,100,000,000   $ 4,100,000,000 $ 4,140,409,000 $ 0    
Debt, weighted average interest rate       7.70%   7.70%        
Spread on variable interest rate           7.00%        
Fixed-Rate Property Debt | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross     $ 1,700,000,000              
Non Recourse Property Debt Maturing On June 26, 2026 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross     $ 2,700,000,000              
Spread on variable interest rate     2.00%              
Debt instrument, number of extension terms | extension     2              
Debt instrument, extension term     1 year              
Debt instrument, interest rate, effective percentage     7.33%              
Variable-Rate Non-Recourse Property Debt, Maturing In September 2024 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross   $ 375,000,000.0                
Spread on variable interest rate       2.00%            
Debt instrument, interest rate, effective percentage       7.33%   7.33%        
Variable-Rate Non-Recourse Property Debt, Maturing In July 2026 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross         $ 148,500,000          
Spread on variable interest rate         2.10%          
Debt instrument, number of extension terms | extension         3          
Debt instrument, extension term         1 year          
Variable-Rate Non-Recourse Property Debt, Maturing In July 2026 | Secured Debt | Maximum | Interest Rate Cap                    
Line of Credit Facility [Line Items]                    
Debt instrument, interest rate, stated percentage                   7.10%
Fixed Rate, Maturing In August 2030 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross         $ 20,300,000          
Debt instrument, interest rate, effective percentage         7.02%          
Fixed Rate, Maturing In October 2030 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Long-term debt, gross         $ 31,900,000          
Debt instrument, interest rate, effective percentage         7.13%          
Variable-Rate Non-Recourse Property Debt, Maturing In 2026                    
Line of Credit Facility [Line Items]                    
Repayments of debt   $ 1,900,000,000                
Variable-Rate Non-Recourse Property Debt, Maturing In 2026 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Spread on variable interest rate 2.08% 2.18%                
Debt instrument, number of extension terms | extension 3 3                
Debt instrument, extension term 1 year 1 year                
Debt instrument, interest rate, effective percentage 7.17% 7.53%                
Loan borrowed $ 1,100,000,000 $ 3,000,000,000.0                
Fixed Rate, Maturing In August 2029 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Debt instrument, interest rate, stated percentage   5.49%                
Loan borrowed   $ 401,900,000                
Variable Rate Property Debt, Maturing in 2026 | Secured Debt                    
Line of Credit Facility [Line Items]                    
Loan borrowed $ 800,000,000                  
v3.25.1
Debt - Scheduled of principal amortization and maturity payments for our outstanding debt balances (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Amortization  
2025 $ 21,400
2026 18,452
2027 19,318
2028 13,320
2029 (1) 13,673
Thereafter 154,080
Total 240,243
Maturities  
2025 300,496
2026 161,950
2027 63,098
2028 189,652
2029 (1) 4,566,053
Thereafter 763,714
Total 6,044,963
Total  
2025 321,896
2026 180,402
2027 82,416
2028 202,972
2029 (1) 4,579,726
Thereafter 917,794
Total $ 6,285,206
v3.25.1
Investments in Unconsolidated Real Estate Partnerships - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
ft²
property
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Variable Interest Entity [Line Items]        
Non-recourse property debt, net   $ 6,241,869 $ 2,223,791  
Gain on dispositions of real estate and impairments of real estate, net   3,951 $ 677,740 $ 939,806
Bethesda Maryland        
Variable Interest Entity [Line Items]        
Number of apartment homes | property 359,000      
Area of real estate property | ft² 50,500      
Bethesda Maryland | Apartment Community        
Variable Interest Entity [Line Items]        
Purchase price $ 150,000      
Core JV | Bethesda Maryland        
Variable Interest Entity [Line Items]        
Non-recourse property debt, net 97,300      
Proceeds from real estate and real estate joint ventures 27,500 $ 27,500    
Gain on dispositions of real estate and impairments of real estate, net $ 3,200      
Core JV | Parent Company        
Variable Interest Entity [Line Items]        
Ownership, percentage   53.00%    
v3.25.1
Investments in Unconsolidated Real Estate Partnerships - Ownership Information (Details)
12 Months Ended
Dec. 31, 2024
apartment
Schedule of Equity Method Investments [Line Items]  
Apartment homes 21,294
Virginia JV  
Schedule of Equity Method Investments [Line Items]  
Number of apartment communities 3
Apartment homes 1,748
Virginia JV | Parent Company  
Schedule of Equity Method Investments [Line Items]  
Ownership, percentage 20.00%
Virginia JV | Partnership Interest  
Schedule of Equity Method Investments [Line Items]  
Ownership, percentage 80.00%
Value-Add JV  
Schedule of Equity Method Investments [Line Items]  
Number of apartment communities 1
Apartment homes 444
Value-Add JV | Parent Company  
Schedule of Equity Method Investments [Line Items]  
Ownership, percentage 30.00%
Value-Add JV | Partnership Interest  
Schedule of Equity Method Investments [Line Items]  
Ownership, percentage 70.00%
Core JV  
Schedule of Equity Method Investments [Line Items]  
Number of apartment communities 12
Apartment homes 3,909
Core JV | Parent Company  
Schedule of Equity Method Investments [Line Items]  
Ownership, percentage 53.00%
Core JV | Partnership Interest  
Schedule of Equity Method Investments [Line Items]  
Ownership, percentage 47.00%
Huntington Gateway  
Schedule of Equity Method Investments [Line Items]  
Apartment homes in communities owned by VIEs 70.00%
Huntington Gateway | Parent Company  
Schedule of Equity Method Investments [Line Items]  
Ownership, percentage 50.00%
v3.25.1
Investments in Unconsolidated Real Estate Partnerships - Combined Balance Sheets for Joint Venture Partners (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Variable Interest Entity [Line Items]    
Net real estate $ 5,295,404 $ 5,364,978
Other assets, net 262,036 283,920
Total assets 6,575,542 6,134,752
Third-party debt 6,241,869 3,210,344
Accrued liabilities and other 309,137 296,894
Total liabilities 6,551,006 3,507,238
Investment in unconsolidated real estate partnerships 341,357 336,077
Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Net real estate 972,802 1,013,770
Other assets, net 23,904 22,546
Accrued liabilities and other 36,743 34,903
Variable Interest Entity, Primary Beneficiary | Virginia JV    
Variable Interest Entity [Line Items]    
Net real estate 450,164 467,020
Other assets, net 7,226 7,061
Total assets 457,390 474,081
Third-party debt 395,000 395,000
Accrued liabilities and other 5,643 4,070
Total liabilities 400,643 399,070
Total equity 56,747 75,011
Investment in unconsolidated real estate partnerships 13,501 17,212
Variable Interest Entity, Primary Beneficiary | Value-Add JV    
Variable Interest Entity [Line Items]    
Net real estate 137,071 131,339
Other assets, net 5,757 7,368
Total assets 142,828 138,707
Third-party debt 89,282 88,741
Accrued liabilities and other 1,667 2,528
Total liabilities 90,949 91,269
Total equity 51,879 47,438
Investment in unconsolidated real estate partnerships 30,039 28,606
Variable Interest Entity, Primary Beneficiary | Core JV    
Variable Interest Entity [Line Items]    
Net real estate 1,383,264 1,258,307
Other assets, net 33,009 41,882
Total assets 1,416,273 1,300,189
Third-party debt 891,097 793,910
Accrued liabilities and other 14,721 10,298
Total liabilities 905,818 804,208
Total equity 510,455 495,981
Investment in unconsolidated real estate partnerships 276,588 268,931
Variable Interest Entity, Not Primary Beneficiary | Immaterial Unconsolidated Investments    
Variable Interest Entity [Line Items]    
Investment in unconsolidated real estate partnerships $ 21,200 $ 21,300
v3.25.1
Investments in Unconsolidated Real Estate Partnerships - Income Statment Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]      
Total revenues $ 800,601 $ 820,036 $ 773,723
Total expenses 706,790 669,808 646,221
Net loss (355,842) 689,287 970,050
Loss from unconsolidated real estate partnerships (17,035) (29,648) (3,504)
Variable Interest Entity, Primary Beneficiary | Virginia JV      
Schedule of Equity Method Investments [Line Items]      
Total revenues 47,576 44,725 41,422
Total expenses 59,065 64,779 57,316
Net loss (11,489) (20,054) (15,894)
Loss from unconsolidated real estate partnerships (2,356) (3,999) (3,504)
Variable Interest Entity, Primary Beneficiary | Value-Add JV      
Schedule of Equity Method Investments [Line Items]      
Total revenues 13,409 6,665 0
Total expenses 16,442 12,969 0
Net loss (3,033) (6,304) 0
Loss from unconsolidated real estate partnerships (811) (2,772) 0
Variable Interest Entity, Primary Beneficiary | Core JV      
Schedule of Equity Method Investments [Line Items]      
Total revenues 125,104 51,341 0
Total expenses 149,717 94,141 0
Net loss (24,613) (42,800) 0
Loss from unconsolidated real estate partnerships $ (13,868) $ (22,877) $ 0
v3.25.1
Partners’ (Deficit) Capital - Schedule of Classes of Preferred OP Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Limited Partners Capital Account [Line Items]    
Units issued (in shares) 2,003,158 2,846,524
Units outstanding (in shares) 2,003,158 2,846,524
Redemption values $ 56,827 $ 77,140
Redeemable preferred units $ 56,056 $ 77,140
AIMCO PROPERTIES, L.P. | Class One    
Limited Partners Capital Account [Line Items]    
Distributions per annum, percent 8.75%  
Distributions per annum per unit (in dollars per share) $ 8.00  
Units issued (in shares) 90,000 90,000
Units outstanding (in shares) 90,000 90,000
Redeemable preferred units $ 8,229 $ 8,229
AIMCO PROPERTIES, L.P. | Class Two    
Limited Partners Capital Account [Line Items]    
Distributions per annum, percent 1.92%  
Distributions per annum per unit (in dollars per share) $ 0.48  
Units issued (in shares) 5,368 5,368
Units outstanding (in shares) 5,368 5,368
Redeemable preferred units $ 132 $ 132
AIMCO PROPERTIES, L.P. | Class Three    
Limited Partners Capital Account [Line Items]    
Distributions per annum, percent 7.88%  
Distributions per annum per unit (in dollars per share) $ 1.97  
Units issued (in shares) 472,281 1,310,902
Units outstanding (in shares) 472,281 1,310,902
Redeemable preferred units $ 11,807 $ 32,772
AIMCO PROPERTIES, L.P. | Class Four    
Limited Partners Capital Account [Line Items]    
Distributions per annum, percent 8.00%  
Distributions per annum per unit (in dollars per share) $ 2.00  
Units issued (in shares) 644,954 644,954
Units outstanding (in shares) 644,954 644,954
Redeemable preferred units $ 16,124 $ 16,124
AIMCO PROPERTIES, L.P. | Class Six    
Limited Partners Capital Account [Line Items]    
Distributions per annum, percent 8.50%  
Distributions per annum per unit (in dollars per share) $ 2.13  
Units issued (in shares) 769,585 769,585
Units outstanding (in shares) 769,585 769,585
Redeemable preferred units $ 19,240 $ 19,240
AIMCO PROPERTIES, L.P. | Class Seven    
Limited Partners Capital Account [Line Items]    
Distributions per annum, percent 7.87%  
Distributions per annum per unit (in dollars per share) $ 1.97  
Units issued (in shares) 20,970 25,715
Units outstanding (in shares) 20,970 25,715
Redeemable preferred units $ 524 $ 643
v3.25.1
Partners’ (Deficit) Capital - Narrative (Details) - AIMCO PROPERTIES, L.P. - shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Related Party Transaction [Line Items]      
Redeemable partnership preferred units redeemed for cash during period (in shares) 843,000,000 50 89,000
Common OP Units redeemed in exchange for cash during period (in shares)) 1,068,000,000 528,000 251,000
Common OP Units redeemed in exchange for shares during period (in shares) 0 0 3,000
v3.25.1
Partners’ (Deficit) Capital - Schedule of Reconciliation of Preferred OP Units (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
Redeemable Noncontrolling Interest [Roll Forward]  
Balance at January 1, 2024 $ 77,140
Preferred distributions (5,103)
Redemption of preferred units (21,084)
Net income allocated to preferred units 5,874
Balance at December 31, 2024 $ 56,827
v3.25.1
Earnings Per Unit - Schedule of Reconciliations of Numerator and Denominator in Calculations of Basic and Diluted Earnings (Loss) per Share and per Unit (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Numerator:      
Basic net (loss) income attributable to the AIR Operating Partnership’s common unitholders $ (367,019) $ 677,165 $ 962,414
Effect of dilutive instruments 0 6,280 6,388
Dilutive net (loss) income attributable to the AIR Operating Partnership’s common unitholders $ (367,019) $ 683,445 $ 968,802
Denominator – units:      
Basic weighted-average common units outstanding (in shares) 154,016 157,687 164,141
Dilutive common unit equivalents outstanding (in shares) 0 2,321 2,494
Dilutive weighted-average common units outstanding (in shares) 154,016 160,008 166,635
Earnings per unit - basic (in dollars per share) $ (2.38) $ 4.29 $ 5.86
Earnings per unit - diluted (in dollars per share) $ (2.38) $ 4.27 $ 5.81
v3.25.1
Fair Value Measurements - Schedule of Fair Value for Interest Rate Options and swaps (Details) - Fair value recurring - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Interest rate swaps - pay-fixed, receive floating    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value $ 66 $ 14,679
Interest rate swaps - pay-floating, receive fixed    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 465
Interest rate caps - net (1)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 331
Interest rate caps - net    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 5,262 0
Interest Rate Cap    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 11,000  
Sold Interest Rate Caps    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 5,800  
Level 1 | Interest rate swaps - pay-fixed, receive floating    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 0
Level 1 | Interest rate swaps - pay-floating, receive fixed    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 0
Level 1 | Interest rate caps - net (1)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 0
Level 1 | Interest rate caps - net    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 0
Level 2 | Interest rate swaps - pay-fixed, receive floating    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 66 14,679
Level 2 | Interest rate swaps - pay-floating, receive fixed    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 465
Level 2 | Interest rate caps - net (1)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 331
Level 2 | Interest rate caps - net    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 5,262 0
Level 3 | Interest rate swaps - pay-fixed, receive floating    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 0
Level 3 | Interest rate swaps - pay-floating, receive fixed    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 0
Level 3 | Interest rate caps - net (1)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value 0 0
Level 3 | Interest rate caps - net    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total fair value $ 0 $ 0
v3.25.1
Fair Value Measurements - Schedule of Carrying Value and Fair Value of Non-recourse Property Debt (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Long term debt   $ 6,241,869 $ 3,210,344
Repayments of debt   1,700,000  
Seller financing note receivable, net | Fair value Non-recurring | Carrying Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Seller financing note receivable, net   33,151 32,459
Seller financing note receivable, net | Fair value Non-recurring | Fair Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Seller financing note receivable, net   32,999 33,042
Preferred equity investment | Fair value Non-recurring | Carrying Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Preferred equity investment   23,872 22,693
Preferred equity investment | Fair value Non-recurring | Fair Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Preferred equity investment   25,513 23,562
Fixed-rate non-recourse property debt | Fair value Non-recurring | Carrying Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Long term debt   2,144,797 2,236,975
Fixed-rate non-recourse property debt | Fair value Non-recurring | Fair Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Long term debt   1,963,083 2,001,532
Unsecured notes payable | Fair value Non-recurring | Carrying Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Long term debt   0 400,000
Repayments of debt $ 400,000    
Unsecured notes payable | Fair value Non-recurring | Fair Value      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Long term debt   $ 0 $ 384,244
v3.25.1
Derivative Financial Instruments and Hedging Activities - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Reclassification of interest rate derivative (gain) loss to net income (loss) $ 15,464,000 $ 25,823,000 $ (273,000)
Cash flow hedge gain (loss) to be reclassified within 12 months 4,000,000    
Gain on derivative instruments, net 11,235,000 $ 16,742,000 $ 0
Designated as Hedging Instrument      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Outstanding derivatives 0    
Designated as Hedging Instrument | Favorable Interest Rates      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Aggregate notional amount $ 550,000,000    
v3.25.1
Derivative Financial Instruments and Hedging Activities - Schedule of Derivative Financial Instruments (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
instrument
Dec. 31, 2023
USD ($)
instrument
Interest rate swaps - pay-fixed, receive-floating | Not Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of instruments held | instrument 15 7
Aggregate notional amount $ 4,550,000 $ 555,000
Interest rate swaps - pay-fixed, receive-floating | Not Designated as Hedging Instrument | Derivative Assets (included in Other Assets, net)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Asset derivatives, fair value 10,177 15,266
Interest rate swaps - pay-fixed, receive-floating | Not Designated as Hedging Instrument | Derivative Liabilities (included in Accrued Liabilities and Other)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Liability derivatives, fair value $ (10,111) $ (587)
Interest rate caps - net (1) | Not Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of instruments held | instrument 6  
Aggregate notional amount $ 1,148,500  
Interest rate caps - net (1) | Not Designated as Hedging Instrument | Derivative Assets (included in Other Assets, net)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Asset derivatives, fair value 11,025  
Interest rate caps - net (1) | Not Designated as Hedging Instrument | Derivative Liabilities (included in Accrued Liabilities and Other)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Liability derivatives, fair value (5,763)  
Interest rate swaps - pay-floating, receive-fixed | Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of instruments held | instrument   2
Aggregate notional amount   $ 80,000
Interest rate swaps - pay-floating, receive-fixed | Designated as Hedging Instrument | Derivative Assets (included in Other Assets, net)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Asset derivatives, fair value   472
Interest rate swaps - pay-floating, receive-fixed | Designated as Hedging Instrument | Derivative Liabilities (included in Accrued Liabilities and Other)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Liability derivatives, fair value   $ (7)
Interest rate swaps - forward starting | Not Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of instruments held | instrument   1
Aggregate notional amount   $ 50,000
Interest rate swaps - forward starting | Not Designated as Hedging Instrument | Derivative Assets (included in Other Assets, net)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Asset derivatives, fair value   331
Interest rate swaps - forward starting | Not Designated as Hedging Instrument | Derivative Liabilities (included in Accrued Liabilities and Other)    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Liability derivatives, fair value   $ 0
Interest Rate Cap | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Aggregate notional amount $ 4,100,000  
Interest Rate Cap | Not Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of instruments held | instrument 4  
Sold Interest Rate Caps | Not Designated as Hedging Instrument    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Number of instruments held | instrument 2  
Aggregate notional amount $ 3,000,000  
v3.25.1
Variable Interest Entities - Schedule of VIEs Consolidated by the AIR Operating Partnership (Details)
Dec. 31, 2024
entity
property
apartment
Dec. 31, 2023
apartment
entity
property
Variable Interest Entity [Line Items]    
Apartment Homes 21,294  
Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
VIEs with interests in apartment communities | entity 3 3
Apartment communities owned by VIEs | property 14 14
Apartment Homes 4,866 4,866
v3.25.1
Variable Interest Entities - Assets and Liabilities of VIEs (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
ASSETS    
Net real estate $ 5,295,404 $ 5,364,978
Cash and cash equivalents 616,452 91,401
Restricted cash 28,007 26,090
Other assets, net 262,036 283,920
LIABILITIES:    
Non-recourse property debt, net 6,241,869 2,223,791
Accrued liabilities and other 309,137 296,894
Variable Interest Entity, Primary Beneficiary    
ASSETS    
Net real estate 972,802 1,013,770
Cash and cash equivalents 45,554 41,219
Restricted cash 1,876 2,179
Other assets, net 23,904 22,546
LIABILITIES:    
Non-recourse property debt, net 1,309,959 1,196,280
Accrued liabilities and other $ 36,743 $ 34,903
v3.25.1
Business Segments - Narrative (Details)
12 Months Ended
Dec. 31, 2024
apartment
property
Segment
Dec. 31, 2023
property
Segment Reporting Information [Line Items]    
Number of reportable segments | Segment 2  
Apartment homes | apartment 21,294  
Other Real Estate    
Segment Reporting Information [Line Items]    
Number of apartment communities sold 8  
Apartment homes | apartment 3,120  
Same Store    
Segment Reporting Information [Line Items]    
Number of apartment communities sold 69  
Apartment homes | apartment 24,275  
Whole Owned Consolidated Properties | Other Real Estate    
Segment Reporting Information [Line Items]    
Number of apartment communities sold 2 4
Planned Property Capital Investment | Other Real Estate    
Segment Reporting Information [Line Items]    
Number of apartment communities sold 2  
v3.25.1
Business Segments - Schedule of Information for Reportable Segments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Summary information for the reportable segments      
Total revenues $ 800,601 $ 820,036 $ 773,723
Other operating expenses not allocated to segments 431,120 393,976 384,957
Operating expenses 706,790 669,808 646,221
Proportionate property net operating income (loss) 93,811 150,228 127,502
Other items included in income before income tax expense (451,957) 541,486 846,471
(Loss) income before income tax benefit (expense) (358,146) 691,714 973,973
Real Estate      
Summary information for the reportable segments      
Property management and operating expenses 275,670 275,832 261,264
Segment Reconciling Items      
Summary information for the reportable segments      
Total revenues 22,320 85,862 126,137
Other operating expenses not allocated to segments 0 0 0
Operating expenses 30,185 43,640 51,501
Proportionate property net operating income (loss) (7,865) 42,222 74,636
Other items included in income before income tax expense 0 0 0
(Loss) income before income tax benefit (expense) (7,865) 42,222 74,636
Segment Reconciling Items | Real Estate      
Summary information for the reportable segments      
Property management and operating expenses 30,185 43,640 51,501
Corporate Non-Segment      
Summary information for the reportable segments      
Total revenues 14,920 14,456 53,822
Other operating expenses not allocated to segments 431,120 393,976 384,957
Operating expenses 470,155 434,447 434,924
Proportionate property net operating income (loss) (455,235) (419,991) (381,102)
Other items included in income before income tax expense (451,957) 541,486 846,471
(Loss) income before income tax benefit (expense) (907,192) 121,495 465,369
Corporate Non-Segment | Real Estate      
Summary information for the reportable segments      
Property management and operating expenses 39,035 40,471 49,967
Same Store | Operating Segments      
Summary information for the reportable segments      
Total revenues 683,735 664,022 578,123
Other operating expenses not allocated to segments 0 0 0
Operating expenses 178,483 171,610 151,816
Proportionate property net operating income (loss) 505,252 492,412 426,307
Other items included in income before income tax expense 0 0 0
(Loss) income before income tax benefit (expense) 505,252 492,412 426,307
Same Store | Operating Segments | Real Estate      
Summary information for the reportable segments      
Property management and operating expenses 178,483 171,610 151,816
Other Real Estate | Operating Segments      
Summary information for the reportable segments      
Total revenues 79,626 55,696 15,641
Other operating expenses not allocated to segments 0 0 0
Operating expenses 27,967 20,111 7,980
Proportionate property net operating income (loss) 51,659 35,585 7,661
Other items included in income before income tax expense 0 0 0
(Loss) income before income tax benefit (expense) 51,659 35,585 7,661
Other Real Estate | Operating Segments | Real Estate      
Summary information for the reportable segments      
Property management and operating expenses $ 27,967 $ 20,111 $ 7,980
v3.25.1
Business Segments - Schedule of Property Management and Operating Expenses (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Operating expenses $ 706,790 $ 669,808 $ 646,221
Same Store | Operating Segments      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Operating expenses 79,213 77,774 72,636
Utility expenses, net of reimbursement 7,703 9,391 9,897
Real estate taxes 73,345 69,404 59,885
Insurance 18,222 15,041 9,398
Operating expenses 178,483 171,610 151,816
Other Real Estate | Operating Segments      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Operating expenses 14,056 10,172 4,789
Utility expenses, net of reimbursement 1,596 1,185 368
Real estate taxes 10,942 7,479 2,595
Insurance 1,373 1,275 228
Operating expenses $ 27,967 $ 20,111 $ 7,980
v3.25.1
Business Segments - Schedule of Reconciliation of Assets from Segment to Consolidated (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]    
Total assets $ 6,575,542 $ 6,134,752
Corporate Non-Segment    
Segment Reporting Information [Line Items]    
Total assets 1,047,587 513,961
Same Store | Operating Segments    
Segment Reporting Information [Line Items]    
Total assets 4,681,532 4,841,335
Other Real Estate | Operating Segments    
Segment Reporting Information [Line Items]    
Total assets $ 846,423 $ 779,456
v3.25.1
Business Segments - Schedule of Capital Additions Related to Segments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment Reporting Information [Line Items]      
Total capital additions $ 148,161 $ 155,574 $ 149,706
Same Store      
Segment Reporting Information [Line Items]      
Total capital additions 129,617 139,848 147,255
Other Real Estate      
Segment Reporting Information [Line Items]      
Total capital additions $ 18,544 $ 15,726 $ 2,451
v3.25.1
Schedule III: Real Estate and Accumulated Depreciation - Schedule of Real Estate and Accumulated Depreciation (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
apartment
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 21,294      
Land $ 1,386,888      
Buildings and Improvements 4,147,619      
Cost Capitalized Subsequent to Consolidation 2,263,985      
Land 1,297,106      
Buildings and Improvements 6,501,386      
Total 7,798,492 $ 7,610,567 $ 8,076,394 $ 6,885,081
Accumulated Depreciation (AD) (2,503,088) $ (2,245,589) $ (2,449,883) $ (2,284,793)
Total Cost Net of AD 5,295,404      
Encumbrances $ 6,285,206      
Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 2,305      
Land $ 135,464      
Buildings and Improvements 595,032      
Cost Capitalized Subsequent to Consolidation 124,958      
Land 135,464      
Buildings and Improvements 719,990      
Total 855,454      
Accumulated Depreciation (AD) (75,263)      
Total Cost Net of AD 780,191      
Encumbrances $ 546,219      
Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 18,989      
Land $ 1,251,424      
Buildings and Improvements 3,552,587      
Cost Capitalized Subsequent to Consolidation 2,139,027      
Land 1,161,642      
Buildings and Improvements 5,781,396      
Total 6,943,038      
Accumulated Depreciation (AD) (2,427,825)      
Total Cost Net of AD 4,515,213      
Encumbrances $ 5,738,987      
21 Fitzsimons | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 601      
Land $ 13,176      
Buildings and Improvements 110,795      
Cost Capitalized Subsequent to Consolidation 43,228      
Land 13,176      
Buildings and Improvements 154,023      
Total 167,199      
Accumulated Depreciation (AD) (59,088)      
Total Cost Net of AD 108,111      
Encumbrances $ 100,089      
3400 Avenue of the Arts | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 770      
Land $ 57,241      
Buildings and Improvements 65,506      
Cost Capitalized Subsequent to Consolidation 104,423      
Land 57,241      
Buildings and Improvements 169,929      
Total 227,170      
Accumulated Depreciation (AD) (121,216)      
Total Cost Net of AD 105,954      
Encumbrances $ 285,086      
707 Leahy | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 110      
Land $ 20,956      
Buildings and Improvements 62,605      
Cost Capitalized Subsequent to Consolidation 431      
Land 20,956      
Buildings and Improvements 63,036      
Total 83,992      
Accumulated Depreciation (AD) (5,462)      
Total Cost Net of AD 78,530      
Encumbrances $ 46,805      
777 South Broad Street | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 146      
Land $ 6,986      
Buildings and Improvements 67,512      
Cost Capitalized Subsequent to Consolidation 6,018      
Land 6,986      
Buildings and Improvements 73,530      
Total 80,516      
Accumulated Depreciation (AD) (19,147)      
Total Cost Net of AD 61,369      
Encumbrances $ 36,533      
Axiom | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 115      
Land $ 0      
Buildings and Improvements 63,612      
Cost Capitalized Subsequent to Consolidation 5,071      
Land 0      
Buildings and Improvements 68,683      
Total 68,683      
Accumulated Depreciation (AD) (23,532)      
Total Cost Net of AD 45,151      
Encumbrances $ 58,263      
Bay Parc Plaza | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 474      
Land $ 22,680      
Buildings and Improvements 41,847      
Cost Capitalized Subsequent to Consolidation 64,903      
Land 22,680      
Buildings and Improvements 106,750      
Total 129,430      
Accumulated Depreciation (AD) (49,222)      
Total Cost Net of AD 80,208      
Encumbrances $ 99,941      
Boulder Creek | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 221      
Land $ 754      
Buildings and Improvements 7,730      
Cost Capitalized Subsequent to Consolidation 20,201      
Land 754      
Buildings and Improvements 27,931      
Total 28,685      
Accumulated Depreciation (AD) (22,181)      
Total Cost Net of AD 6,504      
Encumbrances $ 66,256      
Broadcast Center | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 279      
Land $ 29,407      
Buildings and Improvements 41,244      
Cost Capitalized Subsequent to Consolidation 46,677      
Land 29,407      
Buildings and Improvements 87,921      
Total 117,328      
Accumulated Depreciation (AD) (50,454)      
Total Cost Net of AD 66,874      
Encumbrances $ 139,713      
Calhoun Beach Club | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 332      
Land $ 11,708      
Buildings and Improvements 73,334      
Cost Capitalized Subsequent to Consolidation 61,531      
Land 11,708      
Buildings and Improvements 134,865      
Total 146,573      
Accumulated Depreciation (AD) (105,540)      
Total Cost Net of AD 41,033      
Encumbrances $ 85,146      
Charlesbank Apartment Homes | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 44      
Land $ 3,399      
Buildings and Improvements 11,726      
Cost Capitalized Subsequent to Consolidation 1,974      
Land 3,399      
Buildings and Improvements 13,700      
Total 17,099      
Accumulated Depreciation (AD) (5,439)      
Total Cost Net of AD 11,660      
Encumbrances $ 15,845      
Chestnut Hall | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 315      
Land $ 12,338      
Buildings and Improvements 14,299      
Cost Capitalized Subsequent to Consolidation 11,308      
Land 12,338      
Buildings and Improvements 25,607      
Total 37,945      
Accumulated Depreciation (AD) (16,405)      
Total Cost Net of AD 21,540      
Encumbrances $ 31,351      
City Center on 7th | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 700      
Land $ 35,196      
Buildings and Improvements 186,823      
Cost Capitalized Subsequent to Consolidation 41,845      
Land 35,196      
Buildings and Improvements 228,668      
Total 263,864      
Accumulated Depreciation (AD) (32,672)      
Total Cost Net of AD 231,192      
Encumbrances $ 220,733      
Flamingo Point, Center Tower | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 513      
Land $ 15,279      
Buildings and Improvements 29,358      
Cost Capitalized Subsequent to Consolidation 249,204      
Land 15,279      
Buildings and Improvements 278,562      
Total 293,841      
Accumulated Depreciation (AD) (163,400)      
Total Cost Net of AD 130,441      
Encumbrances $ 267,959      
Flamingo Point, North Tower | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 366      
Land $ 91,529      
Buildings and Improvements 290,682      
Cost Capitalized Subsequent to Consolidation 2,752      
Land 91,529      
Buildings and Improvements 293,434      
Total 384,963      
Accumulated Depreciation (AD) (24,204)      
Total Cost Net of AD 360,759      
Encumbrances $ 220,293      
Foxchase | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 2,113      
Land $ 15,496      
Buildings and Improvements 96,062      
Cost Capitalized Subsequent to Consolidation 98,695      
Land 15,496      
Buildings and Improvements 194,757      
Total 210,253      
Accumulated Depreciation (AD) (137,083)      
Total Cost Net of AD 73,170      
Encumbrances $ 401,920      
Hidden Cove | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 334      
Land $ 3,043      
Buildings and Improvements 17,616      
Cost Capitalized Subsequent to Consolidation 22,031      
Land 3,043      
Buildings and Improvements 39,647      
Total 42,690      
Accumulated Depreciation (AD) (25,930)      
Total Cost Net of AD 16,760      
Encumbrances $ 64,757      
Hidden Cove II | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 118      
Land $ 12,849      
Buildings and Improvements 6,530      
Cost Capitalized Subsequent to Consolidation 7,848      
Land 12,849      
Buildings and Improvements 14,378      
Total 27,227      
Accumulated Depreciation (AD) (8,614)      
Total Cost Net of AD 18,613      
Encumbrances $ 25,183      
Hillcreste | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 315      
Land $ 35,862      
Buildings and Improvements 47,216      
Cost Capitalized Subsequent to Consolidation 29,389      
Land 35,862      
Buildings and Improvements 76,605      
Total 112,467      
Accumulated Depreciation (AD) (44,785)      
Total Cost Net of AD 67,682      
Encumbrances $ 153,936      
Indian Oaks | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 254      
Land $ 24,523      
Buildings and Improvements 15,801      
Cost Capitalized Subsequent to Consolidation 14,119      
Land 24,523      
Buildings and Improvements 29,920      
Total 54,443      
Accumulated Depreciation (AD) (22,395)      
Total Cost Net of AD 32,048      
Encumbrances $ 58,955      
Indigo | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 463      
Land $ 26,932      
Buildings and Improvements 296,116      
Cost Capitalized Subsequent to Consolidation 13,429      
Land 26,932      
Buildings and Improvements 309,545      
Total 336,477      
Accumulated Depreciation (AD) (92,502)      
Total Cost Net of AD 243,975      
Encumbrances $ 168,296      
Laurel Crossing | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 418      
Land $ 49,474      
Buildings and Improvements 17,756      
Cost Capitalized Subsequent to Consolidation 25,041      
Land 49,474      
Buildings and Improvements 42,797      
Total 92,271      
Accumulated Depreciation (AD) (24,327)      
Total Cost Net of AD 67,944      
Encumbrances $ 130,409      
Lincoln Place | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 795      
Land $ 128,332      
Buildings and Improvements 10,439      
Cost Capitalized Subsequent to Consolidation 257,341      
Land 44,198      
Buildings and Improvements 351,914      
Total 396,112      
Accumulated Depreciation (AD) (206,356)      
Total Cost Net of AD 189,756      
Encumbrances $ 166,158      
Malibu Canyon | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 698      
Land $ 69,834      
Buildings and Improvements 53,438      
Cost Capitalized Subsequent to Consolidation 47,388      
Land 69,834      
Buildings and Improvements 100,826      
Total 170,660      
Accumulated Depreciation (AD) (73,602)      
Total Cost Net of AD 97,058      
Encumbrances $ 158,950      
Mariners Cove | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 500      
Land $ 0      
Buildings and Improvements 66,861      
Cost Capitalized Subsequent to Consolidation 13,602      
Land 0      
Buildings and Improvements 80,463      
Total 80,463      
Accumulated Depreciation (AD) (55,381)      
Total Cost Net of AD 25,082      
Encumbrances $ 130,659      
Meadow Creek | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 332      
Land $ 1,435      
Buildings and Improvements 24,533      
Cost Capitalized Subsequent to Consolidation 18,010      
Land 1,435      
Buildings and Improvements 42,543      
Total 43,978      
Accumulated Depreciation (AD) (28,530)      
Total Cost Net of AD 15,448      
Encumbrances $ 81,781      
Mezzo | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 95      
Land $ 4,292      
Buildings and Improvements 34,178      
Cost Capitalized Subsequent to Consolidation 3,540      
Land 4,292      
Buildings and Improvements 37,718      
Total 42,010      
Accumulated Depreciation (AD) (13,530)      
Total Cost Net of AD 28,480      
Encumbrances $ 26,172      
Monterey Grove | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 224      
Land $ 34,325      
Buildings and Improvements 21,939      
Cost Capitalized Subsequent to Consolidation 20,251      
Land 34,325      
Buildings and Improvements 42,190      
Total 76,515      
Accumulated Depreciation (AD) (22,327)      
Total Cost Net of AD 54,188      
Encumbrances $ 44,415      
North Park | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 310      
Land $ 42,900      
Buildings and Improvements 68,090      
Cost Capitalized Subsequent to Consolidation 16,647      
Land 42,933      
Buildings and Improvements 84,704      
Total 127,637      
Accumulated Depreciation (AD) (10,380)      
Total Cost Net of AD 117,257      
Encumbrances $ 89,243      
Ocean House on Prospect | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 53      
Land $ 12,528      
Buildings and Improvements 18,805      
Cost Capitalized Subsequent to Consolidation 14,362      
Land 12,528      
Buildings and Improvements 33,167      
Total 45,695      
Accumulated Depreciation (AD) (14,259)      
Total Cost Net of AD 31,436      
Encumbrances $ 40,732      
One Ardmore | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 110      
Land $ 4,929      
Buildings and Improvements 61,631      
Cost Capitalized Subsequent to Consolidation 4,033      
Land 4,929      
Buildings and Improvements 65,664      
Total 70,593      
Accumulated Depreciation (AD) (14,099)      
Total Cost Net of AD 56,494      
Encumbrances $ 27,810      
One Canal | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 310      
Land $ 0      
Buildings and Improvements 15,873      
Cost Capitalized Subsequent to Consolidation 185,835      
Land 0      
Buildings and Improvements 201,708      
Total 201,708      
Accumulated Depreciation (AD) (66,305)      
Total Cost Net of AD 135,403      
Encumbrances $ 148,500      
Pacific Bay Vistas | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 308      
Land $ 28,694      
Buildings and Improvements 62,460      
Cost Capitalized Subsequent to Consolidation 35,476      
Land 23,354      
Buildings and Improvements 103,276      
Total 126,630      
Accumulated Depreciation (AD) (55,098)      
Total Cost Net of AD 71,532      
Encumbrances $ 93,406      
Pacifica Park | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 104      
Land $ 12,970      
Buildings and Improvements 6,579      
Cost Capitalized Subsequent to Consolidation 9,681      
Land 12,970      
Buildings and Improvements 16,260      
Total 29,230      
Accumulated Depreciation (AD) (10,127)      
Total Cost Net of AD 19,103      
Encumbrances $ 37,264      
Palazzo at Park La Brea, The | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 521      
Land $ 48,362      
Buildings and Improvements 125,464      
Cost Capitalized Subsequent to Consolidation 65,278      
Land 48,362      
Buildings and Improvements 190,742      
Total 239,104      
Accumulated Depreciation (AD) (120,863)      
Total Cost Net of AD 118,241      
Encumbrances $ 201,940      
Palazzo East at Park La Brea, The | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 611      
Land $ 72,578      
Buildings and Improvements 136,503      
Cost Capitalized Subsequent to Consolidation 46,242      
Land 72,578      
Buildings and Improvements 182,745      
Total 255,323      
Accumulated Depreciation (AD) (119,479)      
Total Cost Net of AD 135,844      
Encumbrances $ 170,160      
Parc Mosaic | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 226      
Land $ 15,300      
Buildings and Improvements 0      
Cost Capitalized Subsequent to Consolidation 112,245      
Land 15,300      
Buildings and Improvements 112,245      
Total 127,545      
Accumulated Depreciation (AD) (31,066)      
Total Cost Net of AD 96,479      
Encumbrances $ 87,690      
Peachtree Park | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 303      
Land $ 4,684      
Buildings and Improvements 11,713      
Cost Capitalized Subsequent to Consolidation 16,510      
Land 4,375      
Buildings and Improvements 28,532      
Total 32,907      
Accumulated Depreciation (AD) (20,337)      
Total Cost Net of AD 12,570      
Encumbrances $ 48,317      
Preserve at Marin | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 126      
Land $ 13,516      
Buildings and Improvements 30,132      
Cost Capitalized Subsequent to Consolidation 82,697      
Land 13,516      
Buildings and Improvements 112,829      
Total 126,345      
Accumulated Depreciation (AD) (53,668)      
Total Cost Net of AD 72,677      
Encumbrances $ 80,210      
PRISM | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 136      
Land $ 13,768      
Buildings and Improvements 74,541      
Cost Capitalized Subsequent to Consolidation 1,180      
Land 13,768      
Buildings and Improvements 75,721      
Total 89,489      
Accumulated Depreciation (AD) (6,582)      
Total Cost Net of AD 82,907      
Encumbrances $ 56,571      
Residences at Capital Crescent Trail | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 261      
Land $ 15,975      
Buildings and Improvements 84,167      
Cost Capitalized Subsequent to Consolidation 16,964      
Land 15,975      
Buildings and Improvements 101,131      
Total 117,106      
Accumulated Depreciation (AD) (11,779)      
Total Cost Net of AD 105,327      
Encumbrances $ 72,563      
Royal Crest Estates | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 588      
Land $ 51,292      
Buildings and Improvements 36,808      
Cost Capitalized Subsequent to Consolidation 27,946      
Land 51,292      
Buildings and Improvements 64,754      
Total 116,046      
Accumulated Depreciation (AD) (47,673)      
Total Cost Net of AD 68,373      
Encumbrances $ 194,762      
Saybrook Pointe | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 324      
Land $ 32,842      
Buildings and Improvements 84,457      
Cost Capitalized Subsequent to Consolidation 29,640      
Land 32,842      
Buildings and Improvements 114,097      
Total 146,939      
Accumulated Depreciation (AD) (42,396)      
Total Cost Net of AD 104,543      
Encumbrances $ 107,347      
SouthStar Lofts | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 85      
Land $ 1,780      
Buildings and Improvements 37,428      
Cost Capitalized Subsequent to Consolidation 1,783      
Land 1,780      
Buildings and Improvements 39,211      
Total 40,991      
Accumulated Depreciation (AD) (9,733)      
Total Cost Net of AD 31,258      
Encumbrances $ 17,000      
Sterling Apartment Homes, The | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 534      
Land $ 8,871      
Buildings and Improvements 55,365      
Cost Capitalized Subsequent to Consolidation 118,550      
Land 8,871      
Buildings and Improvements 173,915      
Total 182,786      
Accumulated Depreciation (AD) (122,306)      
Total Cost Net of AD 60,480      
Encumbrances $ 178,536      
The District at Flagler Village | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 350      
Land $ 14,472      
Buildings and Improvements 156,718      
Cost Capitalized Subsequent to Consolidation 3,170      
Land 14,472      
Buildings and Improvements 159,888      
Total 174,360      
Accumulated Depreciation (AD) (14,921)      
Total Cost Net of AD 159,439      
Encumbrances $ 104,107      
The Fremont | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 253      
Land $ 7,218      
Buildings and Improvements 92,621      
Cost Capitalized Subsequent to Consolidation 1,188      
Land 7,218      
Buildings and Improvements 93,809      
Total 101,027      
Accumulated Depreciation (AD) (8,286)      
Total Cost Net of AD 92,741      
Encumbrances $ 64,984      
The Left Bank | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 282      
Land $ 0      
Buildings and Improvements 130,893      
Cost Capitalized Subsequent to Consolidation 28,445      
Land 0      
Buildings and Improvements 159,338      
Total 159,338      
Accumulated Depreciation (AD) (41,382)      
Total Cost Net of AD 117,956      
Encumbrances $ 71,797      
The Reserve at Coconut Point | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 180      
Land $ 5,162      
Buildings and Improvements 66,593      
Cost Capitalized Subsequent to Consolidation 1,328      
Land 5,162      
Buildings and Improvements 67,921      
Total 73,083      
Accumulated Depreciation (AD) (7,847)      
Total Cost Net of AD 65,236      
Encumbrances $ 42,608      
Tremont | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 78      
Land $ 5,274      
Buildings and Improvements 18,011      
Cost Capitalized Subsequent to Consolidation 4,435      
Land 5,274      
Buildings and Improvements 22,446      
Total 27,720      
Accumulated Depreciation (AD) (8,264)      
Total Cost Net of AD 19,456      
Encumbrances $ 16,567      
Vaughan Place Apartments | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 382      
Land $ 47,276      
Buildings and Improvements 125,213      
Cost Capitalized Subsequent to Consolidation 23,209      
Land 47,244      
Buildings and Improvements 148,454      
Total 195,698      
Accumulated Depreciation (AD) (19,547)      
Total Cost Net of AD 176,151      
Encumbrances $ 134,151      
Villas at Park La Brea, The | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 250      
Land $ 8,630      
Buildings and Improvements 48,871      
Cost Capitalized Subsequent to Consolidation 26,183      
Land 8,630      
Buildings and Improvements 75,054      
Total 83,684      
Accumulated Depreciation (AD) (50,368)      
Total Cost Net of AD 33,316      
Encumbrances $ 109,018      
Villas of Pasadena | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 92      
Land $ 9,693      
Buildings and Improvements 6,818      
Cost Capitalized Subsequent to Consolidation 6,104      
Land 9,693      
Buildings and Improvements 12,922      
Total 22,615      
Accumulated Depreciation (AD) (8,339)      
Total Cost Net of AD 14,276      
Encumbrances $ 20,500      
Vivo | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 91      
Land $ 6,450      
Buildings and Improvements 35,974      
Cost Capitalized Subsequent to Consolidation 6,532      
Land 6,450      
Buildings and Improvements 42,506      
Total 48,956      
Accumulated Depreciation (AD) (21,298)      
Total Cost Net of AD 27,658      
Encumbrances $ 40,805      
Watermarc at Biscayne Bay | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 296      
Land $ 34,710      
Buildings and Improvements 174,237      
Cost Capitalized Subsequent to Consolidation 3,809      
Land 34,710      
Buildings and Improvements 178,046      
Total 212,756      
Accumulated Depreciation (AD) (17,098)      
Total Cost Net of AD 195,658      
Encumbrances $ 132,232      
Waterways Village | Same Store        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 180      
Land $ 4,504      
Buildings and Improvements 11,064      
Cost Capitalized Subsequent to Consolidation 19,305      
Land 4,504      
Buildings and Improvements 30,369      
Total 34,873      
Accumulated Depreciation (AD) (21,001)      
Total Cost Net of AD 13,872      
Encumbrances $ 64,563      
Brizo Apartments | Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 260      
Land $ 7,652      
Buildings and Improvements 60,170      
Cost Capitalized Subsequent to Consolidation 3,085      
Land 7,652      
Buildings and Improvements 63,255      
Total 70,907      
Accumulated Depreciation (AD) (3,348)      
Total Cost Net of AD 67,559      
Encumbrances $ 41,026      
Flamingo Point, South Tower | Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 284      
Land $ 0      
Buildings and Improvements 24,425      
Cost Capitalized Subsequent to Consolidation 75,544      
Land 0      
Buildings and Improvements 99,969      
Total 99,969      
Accumulated Depreciation (AD) (25,019)      
Total Cost Net of AD 74,950      
Encumbrances $ 62,821      
Southgate Towers | Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 495      
Land $ 99,338      
Buildings and Improvements 187,427      
Cost Capitalized Subsequent to Consolidation 5,878      
Land 99,338      
Buildings and Improvements 193,305      
Total 292,643      
Accumulated Depreciation (AD) (14,271)      
Total Cost Net of AD 278,372      
Encumbrances $ 185,829      
Villages at Olde Towne | Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 360      
Land $ 11,575      
Buildings and Improvements 70,767      
Cost Capitalized Subsequent to Consolidation 2,600      
Land 11,575      
Buildings and Improvements 73,367      
Total 84,942      
Accumulated Depreciation (AD) (4,640)      
Total Cost Net of AD 80,302      
Encumbrances $ 64,798      
Villages at Sunnybrook | Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 384      
Land $ 11,704      
Buildings and Improvements 73,102      
Cost Capitalized Subsequent to Consolidation 3,214      
Land 11,704      
Buildings and Improvements 76,316      
Total 88,020      
Accumulated Depreciation (AD) (3,205)      
Total Cost Net of AD 84,815      
Encumbrances $ 66,965      
Willard Towers | Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 522      
Land $ 334      
Buildings and Improvements 179,141      
Cost Capitalized Subsequent to Consolidation 21,889      
Land 334      
Buildings and Improvements 201,030      
Total 201,364      
Accumulated Depreciation (AD) (18,951)      
Total Cost Net of AD 182,413      
Encumbrances $ 124,780      
Other | Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Apartment Homes | apartment 0      
Land $ 4,861      
Buildings and Improvements 0      
Cost Capitalized Subsequent to Consolidation 12,748      
Land 4,861      
Buildings and Improvements 12,748      
Total 17,609      
Accumulated Depreciation (AD) (5,829)      
Total Cost Net of AD 11,780      
Encumbrances $ 0      
v3.25.1
Schedule III: Real Estate and Accumulated Depreciation - Schedule of Real Estate and Accumulated Depreciation Footnote (Details)
$ in Billions
Dec. 31, 2024
USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]  
Aggregate cost of land and depreciable property for federal income tax purposes $ 7.7
Minimum  
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]  
Depreciable life for buildings and improvements 5 years
Maximum  
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]  
Depreciable life for buildings and improvements 30 years
v3.25.1
Schedule III: Real Estate and Accumulated Depreciation - Summary Real Estate and Accumulated Depreciation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Total real estate balance at beginning of year $ 7,610,567 $ 8,076,394 $ 6,885,081
Additions during the year:      
Acquisitions and lease cancellation 238,057 447,945 1,300,122
Capital additions 148,161 168,248 193,360
Dispositions and other (198,293) (1,082,020) (302,169)
Total real estate balance at end of year 7,798,492 7,610,567 8,076,394
Accumulated depreciation balance at beginning of year      
Accumulated depreciation balance at beginning of year 2,245,589 2,449,883 2,284,793
Depreciation 299,329 310,952 308,382
Dispositions and other (41,830) (515,246) (143,292)
Accumulated depreciation balance at end of year $ 2,503,088 $ 2,245,589 $ 2,449,883