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Accounts payable, accrued expenses, and other liabilities (Tables)

12 Months Ended

Dec. 31, 2024

Payables and Accruals [Abstract]

Summary of components of accounts payable, accrued expenses, and tenant security deposits

The following table summarizes the components of accounts payable, accrued expenses, and other liabilities as of December

31, 2024 and 2023 (in thousands):

	December 31,
	2024		2023
Accounts payable and accrued expenses	$534,803		$524,439
Accrued construction	500,890		606,333
Acquired below-market leases	180,407		322,040
Conditional asset retirement obligations	53,968		53,083
Deferred rent liabilities	11,461		15,183
Operating lease liability	507,127	(1)	382,883
Unearned rent and tenant security deposits	691,873		548,529
Other liabilities	173,822		158,453
Total	$2,654,351		$2,610,943

(1)Balance as of December 31, 2024 includes a $135.0 million ground lease liability related to an amendment executed in July 2024 to our existing ground lease

agreement at the Alexandria Technology Square® Megacampus. For additional information, refer to “Leases in which we are the lessee” in Note 5 – “Leases” to our

consolidated financial statements.

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- Definition

Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses.

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