Commitments and Contingencies	3 Months Ended
Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Capital Expenditure Projects, Leasing, and Tenant Improvement Commitments As of March 31, 2026, the Company had an aggregate remaining contractual commitment for capital expenditure projects, leasing commissions and tenant improvements of approximately $3.7 million. Retention Arrangements In December 2025, the Board adopted the Peakstone Realty Trust Retention Bonus Plan (the “Retention Plan”), pursuant to which approximately 37 current Company employees are eligible to receive cash retention bonuses. The retention bonuses generally become payable upon the satisfaction of specified conditions, subject to the applicable employee’s continuous employment. The total potential aggregate cost of the retention bonuses under the Retention Plan is currently estimated to be up to approximately $2.5 million. As of March 31, 2026, the Company has accrued approximately $1.1 million related to the Retention Plan. Litigation From time to time, the Company may become subject to legal and regulatory proceedings, claims and litigation arising in the ordinary course of business. The Company is not a party to, nor is the Company aware of any material pending legal proceedings nor is property of the Company subject to any material pending legal proceedings. Environmental Matters In connection with the ownership and operation of real estate, the Company may potentially be liable for costs and damages related to environmental matters in the ordinary course of business. As of March 31, 2026, the Company is not aware of any environmental condition that it believes will have a material adverse effect on the results of operations.

Commitments and Contingencies

3 Months Ended

Mar. 31, 2026

Commitments and Contingencies Disclosure [Abstract]

Capital Expenditure Projects, Leasing, and Tenant Improvement Commitments

As of March 31, 2026, the Company had an aggregate remaining contractual commitment for capital expenditure projects, leasing commissions and tenant improvements of approximately $3.7 million.

Retention Arrangements

In December 2025, the Board adopted the Peakstone Realty Trust Retention Bonus Plan (the “Retention Plan”), pursuant to which approximately 37 current Company employees are eligible to receive cash retention bonuses. The retention bonuses generally become payable upon the satisfaction of specified conditions, subject to the applicable employee’s continuous employment. The total potential aggregate cost of the retention bonuses under the Retention Plan is currently estimated to be up to approximately $2.5 million. As of March 31, 2026, the Company has accrued approximately $1.1 million related to the Retention Plan.

Litigation

From time to time, the Company may become subject to legal and regulatory proceedings, claims and litigation arising in the ordinary course of business. The Company is not a party to, nor is the Company aware of any material pending legal proceedings nor is property of the Company subject to any material pending legal proceedings.

Environmental Matters

In connection with the ownership and operation of real estate, the Company may potentially be liable for costs and damages related to environmental matters in the ordinary course of business. As of March 31, 2026, the Company is not aware of any environmental condition that it believes will have a material adverse effect on the results of operations.