Organization	12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Note 1 — Organization Apartment Investment and Management Company (“Aimco” or "the Company"), a Maryland corporation, is a self-administered and self-managed real estate investment trust (“REIT”). On December 15, 2020, Aimco completed the separation of its businesses (the “Separation”), creating two, separate and distinct, publicly traded companies, Aimco and Apartment Income REIT Corp. (“AIR”) (Aimco and AIR together, as they existed prior to the Separation, “Aimco Predecessor”). Events noted in this filing as occurring before December 15, 2020, were those entered into by Aimco Predecessor. Aimco, through a wholly-owned subsidiary, is the general partner and is, directly, the special limited partner of Aimco OP L.P. ("Aimco Operating Partnership"). As of December 31, 2024, Aimco owned 92.3% of the legal interest in the common partnership units of Aimco Operating Partnership and 94.8% of the economic interest in Aimco Operating Partnership. The remaining 7.7% legal interest is owned by limited partners. The common partnership units of Aimco Operating Partnership are referred to as "OP Units". As the sole general partner of Aimco Operating Partnership, Aimco has exclusive control of Aimco Operating Partnership’s day-to-day management. This filing combines the Annual Reports on Form 10-K for the fiscal year ended December 31, 2024, of Aimco and Aimco Operating Partnership. Where it is important to distinguish between the two entities, each is referred to specifically. Otherwise, references to “we,” “us,” or “our” mean, collectively, Aimco, Aimco Operating Partnership, and their consolidated entities. We own or lease a portfolio of real estate investments focused primarily on the U.S. multifamily sector. At December 31, 2024, our entire portfolio of operating residential apartment communities includes 5,243 apartment homes within 20 consolidated stabilized operating properties, a substantially complete 689-unit community with 105,000 square feet of retail space, a substantially complete 220-unit community, and four unconsolidated properties. Additionally, we have a substantially complete single family rental community with 16 homes and eight accessory dwelling units, a waterfront ground-up development under construction with 114 planned units, a 106-key luxury hotel with event space, one commercial office building that is part of an assemblage with an adjacent apartment building that is currently held for sale, and land parcels held for development. We also hold other alternative investments, including our Mezzanine Investment (see Note 2 for further information); our investment in IQHQ Holdings, LP ("IQHQ"); and our investment in real estate technology funds.

Organization

12 Months Ended

Dec. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 1 — Organization

Apartment Investment and Management Company (“Aimco” or "the Company"), a Maryland corporation, is a self-administered and self-managed real estate investment trust (“REIT”). On December 15, 2020, Aimco completed the separation of its businesses (the “Separation”), creating two, separate and distinct, publicly traded companies, Aimco and Apartment Income REIT Corp. (“AIR”) (Aimco and AIR together, as they existed prior to the Separation, “Aimco Predecessor”). Events noted in this filing as occurring before December 15, 2020, were those entered into by Aimco Predecessor.

Aimco, through a wholly-owned subsidiary, is the general partner and is, directly, the special limited partner of Aimco OP L.P. ("Aimco Operating Partnership"). As of December 31, 2024, Aimco owned 92.3% of the legal interest in the common partnership units of Aimco Operating Partnership and 94.8% of the economic interest in Aimco Operating Partnership. The remaining 7.7% legal interest is owned by limited partners. The common partnership units of Aimco Operating Partnership are referred to as "OP Units". As the sole general partner of Aimco Operating Partnership, Aimco has exclusive control of Aimco Operating Partnership’s day-to-day management.

This filing combines the Annual Reports on Form 10-K for the fiscal year ended December 31, 2024, of Aimco and Aimco Operating Partnership. Where it is important to distinguish between the two entities, each is referred to specifically. Otherwise, references to “we,” “us,” or “our” mean, collectively, Aimco, Aimco Operating Partnership, and their consolidated entities.

We own or lease a portfolio of real estate investments focused primarily on the U.S. multifamily sector. At December 31, 2024, our entire portfolio of operating residential apartment communities includes 5,243 apartment homes within 20 consolidated stabilized operating properties, a substantially complete 689-unit community with 105,000 square feet of retail space, a substantially complete 220-unit community, and four unconsolidated properties. Additionally, we have a substantially complete single family rental community with 16 homes and eight accessory dwelling units, a waterfront ground-up development under construction with 114 planned units, a 106-key luxury hotel with event space, one commercial office building that is part of an assemblage with an adjacent apartment building that is currently held for sale, and land parcels held for development. We also hold other alternative investments, including our Mezzanine Investment (see Note 2 for further information); our investment in IQHQ Holdings, LP ("IQHQ"); and our investment in real estate technology funds.