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JOINT VENTURES AND PARTNERSHIPS - Summary (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2026 home | Feb. 28, 2026 USD ($) item | Mar. 31, 2026 USD ($) community property home item | Mar. 31, 2025 USD ($) | Dec. 31, 2025 USD ($)
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Number Properties | community |  |  | 161 |  |
Investment in unconsolidated entities |  |  | $ 750,459 |  | $ 879,735
Sold joint ventures and other investments - Investment |  |  |  |  | 136,234
Income/(loss) from investments |  |  | 19,696 | $ 5,814 |
Equity method investment amount sold |  |  |  |  | $ 136,234
Sold unconsolidated joint ventures and partnerships |  |  | $ 2,977 | 3,742 |
Number of preferred equity agreements redeemed | item |  |  | 2 |  |
UDR/MetLife |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Number Properties | property |  |  | 13 |  |
Number of apartment homes | home |  |  | 2,837 |  |
UDR's ownership interest |  |  | 50.20% |  | 50.20%
Investment in unconsolidated entities |  |  | $ 183,280 |  | $ 189,420
Income/(loss) from investments |  |  | $ (1,213) | (1,041) |
UDR/LaSalle |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Number Properties | property |  |  | 9 |  |
Number of apartment homes | home |  |  | 2,564 |  |
UDR's ownership interest |  |  | 51.00% |  | 51.00%
Investment in unconsolidated entities |  |  | $ 235,936 |  | $ 242,337
Income/(loss) from investments |  |  | $ (3,269) | (1,035) |
Preferred Equity Investments |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Number of investments which receive a variable percentage of the value created from the project upon a capital or liquidating event | item |  |  | 2 |  |
Aggregate proceeds |  | $ 138,900 |  |  |
Number of preferred equity agreements redeemed | item |  | 2 |  |  |
Unconsolidated Joint Ventures |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Number Properties | property |  |  | 22 |  |
Number of apartment homes | home |  |  | 5,401 |  |
Investment in unconsolidated entities |  |  | $ 419,216 |  | 431,757
Income/(loss) from investments |  |  | (4,482) | (2,076) |
Real estate technology and sustainability investments |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
UDR Commitment |  |  | 86,000 |  |
Investment in unconsolidated entities |  |  | 92,533 |  | 74,747
Income/(loss) from investments |  |  | $ 17,032 | 1,669 |
Operating Community | Preferred Equity Investments |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Number Properties | community |  |  | 10 |  |
Number of apartment homes | home |  |  | 3,617 |  |
Weighted Average Rate |  |  | 10.50% |  |
UDR Commitment |  |  | $ 222,537 |  |
Investment in unconsolidated entities |  |  | 238,710 |  | 236,997
Income/(loss) from investments |  |  | 4,169 | 2,479 |
Debt and Preferred Equity Program | Real estate technology and sustainability investments |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Investment in unconsolidated entities |  |  | 331,243 |  | $ 311,744
Income/(loss) from investments |  |  | $ 21,201 | $ 4,148 |
Operating community in Portland, Oregon | Subsequent Event |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |
Number of apartment homes acquired | home | 232 |  |  |  |

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