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v3.24.4

Consolidated and unconsolidated real estate joint ventures (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) ft² | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments |  |  |
Reallocation of additional paid-in-capital to consolidated joint venture partner’s non-controlling interest | $ 30,185 | $ 0 | $ 0
Purchase Price | 248,699 | $ 265,750 | $ 2,877,861
Debt Balance, Repayment Amount From Unconsolidated Real Estate Joint Venture | 100,000 |  |
Our Share of Debt Balance, Repayment Amount From Unconsolidated Real Estate Joint Venture | $ 10,000 |  |
1655 and 1725 Third Street |  |  |
Schedule of Equity Method Investments |  |  |
Equity interest percentage (in percent) | 10.00% |  |
Debt Refinanced, Amount | $ 500,000 |  |
1450 Research Boulevard |  |  |
Schedule of Equity Method Investments |  |  |
Equity interest percentage (in percent) | 73.20% |  |
101 West Dickman Street |  |  |
Schedule of Equity Method Investments |  |  |
Equity interest percentage (in percent) | 58.40% |  |
50 and 60 Binney Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 34.00% |  |
75/125 Binney Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 40.00% |  |
100 and 225 Binney Street and 300 Third Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
99 Coolidge Avenue | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 75.00% |  |
15 Necco Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 56.70% |  |
285, 299, 307, and 345 Dorchester Avenue |  |  |
Schedule of Equity Method Investments |  |  |
Purchase Price | $ 155,321 |  |
Total Value of Assets Acquired | $ 103,500 |  |
285, 299, 307, and 345 Dorchester Avenue | Future development projects |  |  |
Schedule of Equity Method Investments |  |  |
Area of Real Estate Property | ft² | 1,000,000.0 |  |
285, 299, 307, and 345 Dorchester Avenue | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 60.00% |  |
Alexandria Center for Science and Technology - Mission Bay | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 25.00% |  |
1450 Owens Street |  |  |
Schedule of Equity Method Investments |  |  |
Reallocation of additional paid-in-capital to consolidated joint venture partner’s non-controlling interest | $ 30,200 |  |
1450 Owens Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 25.10% | 40.60% |
601, 611, 651, 681, 685, and 701 Gateway Boulevard | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 50.00% |  |
751 Gateway Boulevard | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 51.00% |  |
211 and 213 East Grand Avenue | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
500 Forbes Boulevard | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 10.00% |  |
Alexandria Center for Life Science – Millbrae | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 48.20% |  |
3215 Merryfield Row | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
Campus Point by Alexandria | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 55.00% |  |
5200 Illumina Way | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 51.00% |  |
9625 Towne Centre Drive | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
SD Tech by Alexandria | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 50.00% |  |
Pacific Technology Park | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 50.00% |  |
Summers Ridge Science Park | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
1201 and 1208 Eastlake Avenue East |  |  |
Schedule of Equity Method Investments |  |  |
Area of Real Estate Property | ft² | 206,134 |  |
Area of Real Estate, Tenant Occupied | ft² | 115,839 |  |
1201 and 1208 Eastlake Avenue East | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
199 East Blaine Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
400 Dexter Avenue North | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 30.00% |  |
800 Mercer Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Noncontrolling interest, ownership percentage by parent | 60.00% |  |
Noncontrolling Interests | 1450 Owens Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Ownership percentage by noncontrolling owners | 75.00% |  |
Parent | 1450 Owens Street | Alexandria |  |  |
Schedule of Equity Method Investments |  |  |
Expected Subsidiary, Ownership Percentage, Parent | 25.00% |  |

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