Secured and Unsecured Debt of the Operating Partnership (Tables) - Kilroy Realty L.P.

3 Months Ended

Mar. 31, 2022

Debt Instrument [Line Items]

Schedule of Unsecured Revolving Credit Facility

The following table summarizes the balance and terms of our unsecured revolving credit facility as of March 31, 2022 and December 31, 2021:

	March 31, 2022			December 31, 2021
	(in thousands)
Outstanding borrowings	$	—		$	—
Remaining borrowing capacity	1,100,000			1,100,000
Total borrowing capacity (1)	$	1,100,000		$	1,100,000
Interest rate (2)	1.35		%	1.00		%
Facility fee-annual rate (3)	0.200%
Maturity date	July 2025

________________________

(1)We may elect to borrow, subject to bank approval and obtaining commitments for any additional borrowing capacity, up to an additional $500.0 million under an accordion feature under the terms of the unsecured revolving credit facility.

(2)Our unsecured revolving credit facility interest rate was calculated based on the contractual rate of LIBOR plus 0.900% as of March 31, 2022 and December 31, 2021.

(3)Our facility fee is paid on a quarterly basis and is calculated based on the total borrowing capacity. In addition to the facility fee, we incurred debt origination and legal costs. As of March 31, 2022 and December 31, 2021, $6.8 million and $7.3 million of unamortized deferred financing costs, respectively, which are included in prepaid expenses and other assets, net on our consolidated balance sheets, remained to be amortized through the respective maturity dates presented of our unsecured revolving credit facility.

Schedule of Debt Maturities

The following table summarizes the stated debt maturities and scheduled amortization payments for all outstanding debt as of March 31, 2022:

Year	(in thousands)
Remaining 2022	$	4,186
2023	5,775
2024	431,006
2025	406,246
2026	401,317
2027	249,125
Thereafter	2,600,000
Total aggregate principal value (1)	$	4,097,655

________________________ 

(1)Includes gross principal balance of outstanding debt before the effect of the following at March 31, 2022: $22.0 million of unamortized deferred financing costs for the unsecured senior notes and secured debt and $7.1 million of unamortized discounts for the unsecured senior notes.

Schedule of Capitalized Interest and Loan Fees

The following table sets forth gross interest expense, including debt discount and deferred financing cost amortization, net of capitalized interest, for the three months ended March 31, 2022 and 2021. The interest expense capitalized was recorded as a cost of development and redevelopment and increased the carrying value of undeveloped land and construction in progress.

	Three Months Ended March 31,
	2022		2021
	(in thousands)
Gross interest expense	$	39,723	$	39,242
Capitalized interest and deferred financing costs	(19,098)		(16,908)
Interest expense	$	20,625	$	22,334