XML 60 R45.htm IDEA: XBRL DOCUMENT
v3.25.3

JOINT VENTURES AND PARTNERSHIPS - Summary (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) community home property | Jun. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) community home property | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) community home property item | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Number of communities | community | 168 |  | 168 |  | 168 |  |
Investment in unconsolidated entities | $ 905,105 |  | $ 905,105 |  | $ 905,105 |  | $ 912,183
Income/(loss) from investments |  |  | 14,011 | $ (1,880) | 23,454 | $ 11,251 |
Sold unconsolidated joint ventures and partnerships |  |  | $ 3,765 | 2,241 | $ 5,792 | 7,626 | 81,123
Number of preferred equity agreements entered into | item |  |  |  |  | 3 |  |
Number of preferred equity agreements redeemed | item |  |  |  |  | 2 |  |
UDR/MetLife |  |  |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Number of communities | property | 13 |  | 13 |  | 13 |  |
Number of apartment homes | home | 2,837 |  | 2,837 |  | 2,837 |  |
Investment in unconsolidated entities | $ 195,387 |  | $ 195,387 |  | $ 195,387 |  | $ 206,308
UDR's ownership interest | 50.20% |  | 50.20% |  | 50.20% |  | 50.20%
Income/(loss) from investments |  |  | $ 62 | (2,050) | $ (2,114) | (5,304) |
UDR/LaSalle |  |  |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Number of communities | property | 5 |  | 5 |  | 5 |  |
Number of apartment homes | home | 1,590 |  | 1,590 |  | 1,590 |  |
Investment in unconsolidated entities | $ 258,381 |  | $ 258,381 |  | $ 258,381 |  | $ 267,562
UDR's ownership interest | 51.00% |  | 51.00% |  | 51.00% |  | 51.00%
Income/(loss) from investments |  |  | $ (813) | (1,311) | $ (2,774) | (6,982) |
Preferred Equity Investments |  |  |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Proceeds from Sale of Real Estate | $ 32,200 | $ 54,800 |  |  |  |  |
Number of investments which receive a variable percentage of the value created from the project upon a capital or liquidating event | item |  |  |  |  | 3 |  |
Impairment loss |  |  | $ 8,100 |  | $ 8,100 |  |
Unconsolidated Joint Ventures |  |  |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Number of communities | property | 18 |  | 18 |  | 18 |  |
Number of apartment homes | home | 4,427 |  | 4,427 |  | 4,427 |  |
Investment in unconsolidated entities | $ 453,768 |  | $ 453,768 |  | $ 453,768 |  | $ 473,870
Income/(loss) from investments |  |  | (751) | (3,361) | (4,888) | (12,286) |
Real estate technology and sustainability investments |  |  |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Investment in unconsolidated entities | 71,900 |  | 71,900 |  | 71,900 |  | 57,344
Income/(loss) from investments |  |  | 4,416 | 493 | 5,927 | 5,950 |
UDR Commitment | $ 86,000 |  | $ 86,000 |  | $ 86,000 |  |
Operating Community | Preferred Equity Investments |  |  |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Number of communities | community | 12 |  | 12 |  | 12 |  |
Number of apartment homes | home | 6,766 |  | 6,766 |  | 6,766 |  |
Weighted Average Rate | 9.70% |  | 9.70% |  | 9.70% |  |
Investment in unconsolidated entities | $ 379,437 |  | $ 379,437 |  | $ 379,437 |  | 299,846
Income/(loss) from investments |  |  | 6,581 | (1,253) | 16,623 | 9,961 |
UDR Commitment | 354,989 |  | 354,989 |  | 354,989 |  |
Debt and Preferred Equity Program | Real estate technology and sustainability investments |  |  |  |  |  |  |
JOINT VENTURES AND PARTNERSHIPS |  |  |  |  |  |  |
Investment in unconsolidated entities | $ 451,337 |  | 451,337 |  | 451,337 |  | $ 357,190
Income/(loss) from investments |  |  | $ 10,997 | $ (760) | $ 22,550 | $ 15,911 |

X
- Definition Represents the amount the company committed to invest into the joint venture. + References No definition available. + Details
Name: | udr_EquityMethodInvestmentCommittedInvestment
Namespace Prefix: | udr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Income from Participating Loan + References No definition available. + Details
Name: | udr_IncomeFromParticipatingLoan
Namespace Prefix: | udr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of investments which receive a variable percentage of the value created from the project upon a capital or liquidating event. + References No definition available. + Details
Name: | udr_NumberOfInvestmentsWhichReceiveVariablePercentage
Namespace Prefix: | udr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of preferred equity agreements the company entered into during the period. + References No definition available. + Details
Name: | udr_NumberOfPreferredEquityInvestmentsAgreementsEnteredInto
Namespace Prefix: | udr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of preferred equity agreements the company redeemed during the period. + References No definition available. + Details
Name: | udr_NumberOfPreferredEquityInvestmentsAgreementsRedeemed
Namespace Prefix: | udr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Participating Loan, Interest Rate, Stated Percentage + References No definition available. + Details
Name: | udr_ParticipatingLoanInterestRateStatedPercentage
Namespace Prefix: | udr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481664/323-10-45-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 25 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_GainLossOnSaleOfInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Impairment losses measured as the amount by which the carrying amount of the business or real estate partnerships exceeds the fair value of the business or partnership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-2 + Details
Name: | us-gaap_ImpairmentLossesRelatedToRealEstatePartnerships
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Cash received for the sale of real estate that is not part of an investing activity during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleOfRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=udr_UnconsolidatedJointVentureUdrMetLifeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=udr_UnconsolidatedJointVentureUdrLasalleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=udr_PreferredEquityInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=udr_UnconsolidatedJointVenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=udr_RealEstateTechnologyAndSustainabilityInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=udr_OperatingCommunityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=udr_DebtAndPreferredEquityProgramCommunityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |