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JOINT VENTURES AND PARTNERSHIPS - Summary (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) property home community | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) property home community | Jun. 30, 2020 USD ($) | May 31, 2021 USD ($) home | Apr. 28, 2021 | Mar. 31, 2021 USD ($) home | Jan. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Unconsolidated entities |  |  |  |  |  |  |  |  |
Number of real estate properties | community | 153 |  | 153 |  |  |  |  |  |
Investment in unconsolidated entities | $ 613,903 |  | $ 613,903 |  |  |  |  |  | $ 595,486
Sold joint ventures and other investments in prior year | (3) | $ 1,389 | (3) | $ 2,678 |  |  |  |  |
Income/(loss) from investments | 9,751 | 8,021 | 14,673 | 11,388 |  |  |  |  |
Preferred Equity Investment 1200 Broadway Nashville TN |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Rate |  |  |  |  |  | 12.25% |  |  |
Preferred Equity Investment Herndon, Virginia |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities |  |  |  |  |  |  |  | $ 30,200 |
Rate |  |  |  |  |  |  |  | 9.00% |
Preferred Equity Investment Allen, Texas |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Number of apartment homes | home |  |  |  |  |  |  | 469 |  |
Investment in unconsolidated entities |  |  |  |  |  |  | $ 19,800 |  |
Rate |  |  |  |  |  |  | 9.00% |  |
Preferred Equity Investment Kissimmee, Florida |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Number of apartment homes | home |  |  |  |  | 384 |  |  |  |
Investment in unconsolidated entities |  |  |  |  | $ 16,000 |  |  |  |
Rate |  |  |  |  | 14.00% |  |  |  |
Operating Community |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 284,152 |  | 284,152 |  |  |  |  |  | 289,931
Income/(loss) from investments | $ (4,359) | (3,016) | $ (8,417) | (5,453) |  |  |  |  |
Operating Community | Unconsolidated Joint Venture UDR Met Life I Partnership |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Number of real estate properties | property | 1 |  | 1 |  |  |  |  |  |
Number of apartment homes | home | 150 |  | 150 |  |  |  |  |  |
Investment in unconsolidated entities | $ 25,095 |  | $ 25,095 |  |  |  |  |  | $ 26,426
UDR's Ownership Interest | 50.00% |  | 50.00% |  |  |  |  |  | 50.00%
Income/(loss) from investments | $ (839) | (658) | $ (1,314) | (1,112) |  |  |  |  |
Operating Community | Unconsolidated Joint Venture UDR MetLife II Partnership |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Number of real estate properties | property | 7 |  | 7 |  |  |  |  |  |
Number of apartment homes | home | 1,250 |  | 1,250 |  |  |  |  |  |
Investment in unconsolidated entities | $ 184,568 |  | $ 184,568 |  |  |  |  |  | $ 151,353
UDR's Ownership Interest | 50.00% |  | 50.00% |  |  |  |  |  | 50.00%
Income/(loss) from investments | $ (153) | 10 | $ (2,837) | (81) |  |  |  |  |
Operating Community | Unconsolidated Joint Venture Other MetLife |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Number of real estate properties | property | 5 |  | 5 |  |  |  |  |  |
Number of apartment homes | home | 1,437 |  | 1,437 |  |  |  |  |  |
Investment in unconsolidated entities | $ 74,178 |  | $ 74,178 |  |  |  |  |  | $ 82,072
UDR's Ownership Interest | 50.60% |  | 50.60% |  |  |  |  |  | 50.60%
Income/(loss) from investments | $ (3,367) | (2,312) | $ (6,752) | (4,124) |  |  |  |  |
Operating Community | Unconsolidated Joint Venture West Coast Development JV |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | $ 311 |  | $ 311 |  |  |  |  |  | $ 30,080
UDR's Ownership Interest | 47.00% |  | 47.00% |  |  |  |  |  | 47.00%
Income/(loss) from investments |  | (56) | $ 2,486 | (136) |  |  |  |  |
Development Community | Preferred Equity Investment 1532 Harrison San Francisco, CA |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | $ 36,040 |  | 36,040 |  |  |  |  |  | $ 34,135
UDR Commitment | $ 24,645 |  | $ 24,645 |  |  |  |  |  |
Rate | 11.00% |  | 11.00% |  |  |  |  |  |
Years to Maturity |  |  | 1 year |  |  |  |  |  |
Income/(loss) from investments | $ 963 | 846 | $ 1,892 | 1,682 |  |  |  |  |
Development Community | Preferred Equity Investment 1641 Lincoln Santa Monica CA |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 12,413 |  | 12,413 |  |  |  |  |  | 11,699
UDR Commitment | $ 8,800 |  | $ 8,800 |  |  |  |  |  |
Rate | 12.00% |  | 12.00% |  |  |  |  |  |
Years to Maturity |  |  | 1 year 1 month 6 days |  |  |  |  |  |
Income/(loss) from investments | $ 364 | 323 | $ 714 | 637 |  |  |  |  |
Development Community | Preferred Equity Investment 1200 Broadway Nashville TN |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 59,354 |  | 59,354 |  |  |  |  |  | 69,330
UDR Commitment | $ 55,558 |  | $ 55,558 |  |  |  |  |  |
Rate | 12.25% |  | 12.25% |  |  |  |  |  |
Years to Maturity |  |  | 1 year 2 months 12 days |  |  |  |  |  |
Income/(loss) from investments | $ 1,727 | 1,306 | $ 3,099 | 2,587 |  |  |  |  |
Development Community | Preferred Equity Investment 1300 Fairmount Philadelphia, PA |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 62,075 |  | 62,075 |  |  |  |  |  | 59,544
UDR Commitment | $ 51,393 |  | $ 51,393 |  |  |  |  |  |
Rate | 8.50% |  | 8.50% |  |  |  |  |  |
Years to Maturity |  |  | 2 years 1 month 6 days |  |  |  |  |  |
Income/(loss) from investments | $ 1,275 | 1,191 | $ 2,531 | 2,357 |  |  |  |  |
Development Community | Preferred Equity Investment Essex Orlando, FL |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 17,085 |  | 17,085 |  |  |  |  |  | 16,770
UDR Commitment | $ 12,886 |  | $ 12,886 |  |  |  |  |  |
Rate | 12.50% |  | 12.50% |  |  |  |  |  |
Years to Maturity |  |  | 2 years 1 month 6 days |  |  |  |  |  |
Income/(loss) from investments | $ 543 | 481 | $ 1,065 | 947 |  |  |  |  |
Development Community | Preferred Equity Investment Modera Lake Merritt, Oakland |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 32,334 |  | 32,334 |  |  |  |  |  | 30,928
UDR Commitment | $ 27,250 |  | $ 27,250 |  |  |  |  |  |
Rate | 9.00% |  | 9.00% |  |  |  |  |  |
Years to Maturity |  |  | 2 years 9 months 18 days |  |  |  |  |  |
Income/(loss) from investments | $ 714 | 652 | $ 1,405 | 1,226 |  |  |  |  |
Development Community | Preferred Equity Investment Thousand Oaks, CA |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 21,759 |  | 21,759 |  |  |  |  |  | 17,919
UDR Commitment | $ 20,059 |  | $ 20,059 |  |  |  |  |  |
Rate | 9.00% |  | 9.00% |  |  |  |  |  |
Years to Maturity |  |  | 3 years 7 months 6 days |  |  |  |  |  |
Income/(loss) from investments | $ 481 | 153 | $ 918 | 177 |  |  |  |  |
Development Community | Preferred Equity Investment Queens, New York |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 45,169 |  | 45,169 |  |  |  |  |  | 42,360
UDR Commitment | $ 40,000 |  | $ 40,000 |  |  |  |  |  |
Rate | 13.00% |  | 13.00% |  |  |  |  |  |
Years to Maturity |  |  | 4 years |  |  |  |  |  |
Income/(loss) from investments | $ 1,431 |  | $ 2,804 |  |  |  |  |  |
Development Community | Preferred Equity Investment Herndon, Virginia |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 9,176 |  | 9,176 |  |  |  |  |  |
UDR Commitment | $ 30,208 |  | $ 30,208 |  |  |  |  |  |
Rate | 9.00% |  | 9.00% |  |  |  |  |  |
Years to Maturity |  |  | 4 years 6 months |  |  |  |  |  |
Income/(loss) from investments | $ 171 |  | $ 268 |  |  |  |  |  |
Development Community | Preferred Equity Investment Allen, Texas |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 2,179 |  | 2,179 |  |  |  |  |  |
UDR Commitment | $ 19,846 |  | $ 19,846 |  |  |  |  |  |
Rate | 9.00% |  | 9.00% |  |  |  |  |  |
Years to Maturity |  |  | 4 years 8 months 12 days |  |  |  |  |  |
Income/(loss) from investments | $ 226 |  | $ 229 |  |  |  |  |  |
Development Community | Preferred Equity Investment Infield Phase I |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
UDR Commitment | $ 16,044 |  | $ 16,044 |  |  |  |  |  |
Rate | 14.00% |  | 14.00% |  |  |  |  |  |
Years to Maturity |  |  | 2 years 10 months 24 days |  |  |  |  |  |
Development Community | Real estate technology investments RETV I |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | $ 28,696 |  | $ 28,696 |  |  |  |  |  | 20,587
UDR Commitment | 18,000 |  | 18,000 |  |  |  |  |  |
Income/(loss) from investments | 6,055 | 4,696 | 8,106 | 4,550 |  |  |  |  |
Development Community | Real estate technology investments RETV II |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 3,471 |  | 3,471 |  |  |  |  |  | 2,283
UDR Commitment | 18,000 |  | 18,000 |  |  |  |  |  |
Income/(loss) from investments | 163 |  | 62 |  |  |  |  |  |
Development Community | Preferred Equity Investments and Real Estate Technology Investments |  |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 329,751 |  | 329,751 |  |  |  |  |  | $ 305,555
Income/(loss) from investments | $ 14,113 | $ 9,648 | $ 23,093 | $ 14,163 |  |  |  |  |

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