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Information by Business Segment - Segment Financial Information for Our Reportable Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | $ 753,267 | $ 684,982 | $ 739,030
Other segment items: |  |  |
Property operating expenses | (266,001) | (247,385) | (227,430)
UJV NOI allocable to COPT Defense | 7,217 | 6,659 | 4,327
Assets | 4,254,191 | 4,246,966 |
Reportable segments |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 677,717 | 624,803 | 586,378
Other segment items: |  |  |
Property operating expenses | (266,001) | (247,385) | (228,401)
UJV NOI allocable to COPT Defense | 7,217 | 6,659 | 4,327
Total other segment items | (258,784) | (240,726) | (224,074)
NOI | 418,933 | 384,077 | 362,304
Additions to long-lived assets | 145,785 | 117,628 | 104,526
Transfers from non-operating properties | 136,930 | 275,808 | 418,420
Assets | 3,710,647 | 3,586,539 | 3,707,811
Reportable segments | Defense/IT Portfolio |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 607,417 | 552,941 | 517,755
Other segment items: |  |  |
Property operating expenses | (225,811) | (204,462) | (190,636)
UJV NOI allocable to COPT Defense | 7,217 | 6,659 | 4,327
Total other segment items | (218,594) | (197,803) | (186,309)
NOI | 388,823 | 355,138 | 331,446
Additions to long-lived assets | 125,707 | 100,401 | 66,751
Transfers from non-operating properties | 131,474 | 273,137 | 417,716
Assets | 3,391,997 | 3,273,811 | 3,153,948
Reportable segments | Defense/IT Portfolio | Fort Meade/BW Corridor |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 314,411 | 290,061 | 273,790
Other segment items: |  |  |
Property operating expenses | (107,128) | (99,788) | (97,727)
UJV NOI allocable to COPT Defense | 0 | 0 | 0
Total other segment items | (107,128) | (99,788) | (97,727)
NOI | 207,283 | 190,273 | 176,063
Additions to long-lived assets | 64,023 | 54,564 | 48,443
Transfers from non-operating properties | 3,910 | 64,264 | 69,771
Assets | 1,445,236 | 1,446,164 | 1,387,517
Reportable segments | Defense/IT Portfolio | NoVA Defense/IT |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 86,034 | 80,413 | 73,985
Other segment items: |  |  |
Property operating expenses | (36,059) | (31,593) | (26,635)
UJV NOI allocable to COPT Defense | 0 | 0 | 0
Total other segment items | (36,059) | (31,593) | (26,635)
NOI | 49,975 | 48,820 | 47,350
Additions to long-lived assets | 27,205 | 19,041 | 11,102
Transfers from non-operating properties | 1,016 | 4,136 | 1,882
Assets | 494,881 | 490,104 | 488,277
Reportable segments | Defense/IT Portfolio | Lackland Air Force Base |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 67,837 | 67,254 | 62,911
Other segment items: |  |  |
Property operating expenses | (37,169) | (36,616) | (32,301)
UJV NOI allocable to COPT Defense | 0 | 0 | 0
Total other segment items | (37,169) | (36,616) | (32,301)
NOI | 30,668 | 30,638 | 30,610
Additions to long-lived assets | 17,098 | 62 | 0
Transfers from non-operating properties | 10 | 166 | 1,290
Assets | 199,166 | 188,847 | 194,481
Reportable segments | Defense/IT Portfolio | Navy Support |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 32,628 | 32,638 | 32,754
Other segment items: |  |  |
Property operating expenses | (15,146) | (14,614) | (14,001)
UJV NOI allocable to COPT Defense | 0 | 0 | 0
Total other segment items | (15,146) | (14,614) | (14,001)
NOI | 17,482 | 18,024 | 18,753
Additions to long-lived assets | 10,128 | 5,785 | 3,801
Transfers from non-operating properties | 352 | 2,651 | 6,420
Assets | 162,855 | 163,818 | 169,119
Reportable segments | Defense/IT Portfolio | Redstone Arsenal |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 69,317 | 55,131 | 38,593
Other segment items: |  |  |
Property operating expenses | (24,185) | (19,148) | (15,600)
UJV NOI allocable to COPT Defense | 0 | 0 | 0
Total other segment items | (24,185) | (19,148) | (15,600)
NOI | 45,132 | 35,983 | 22,993
Additions to long-lived assets | 7,253 | 20,949 | 3,405
Transfers from non-operating properties | 60,872 | 86,868 | 158,831
Assets | 601,430 | 554,803 | 453,543
Reportable segments | Defense/IT Portfolio | Data Center Shells |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 37,190 | 27,444 | 35,722
Other segment items: |  |  |
Property operating expenses | (6,124) | (2,703) | (4,372)
UJV NOI allocable to COPT Defense | 7,217 | 6,659 | 4,327
Total other segment items | 1,093 | 3,956 | (45)
NOI | 38,283 | 31,400 | 35,677
Additions to long-lived assets | 0 | 0 | 0
Transfers from non-operating properties | 65,314 | 115,052 | 179,522
Assets | 488,429 | 430,075 | 461,011
Reportable segments | Other |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 70,300 | 71,862 | 68,623
Other segment items: |  |  |
Property operating expenses | (40,190) | (42,923) | (37,765)
UJV NOI allocable to COPT Defense | 0 | 0 | 0
Total other segment items | (40,190) | (42,923) | (37,765)
NOI | 30,110 | 28,939 | 30,858
Additions to long-lived assets | 20,078 | 17,227 | 37,775
Transfers from non-operating properties | 5,456 | 2,671 | 704
Assets | $ 318,650 | $ 312,728 | $ 553,863

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