Organization And Description Of Business	9 Months Ended
Sep. 30, 2020
Organization And Description Of Business [Abstract]
Organization And Description Of Business	1. Organization and description of business Organization PS Business Parks, Inc. (“PSB”) was incorporated in the state of California in 1990. As of September 30, 2020, PSB owned 79.0% of the common partnership units of PS Business Parks, L.P. (the “OP”). The remaining common partnership units are owned by Public Storage (“PS”). PS’s interest in the OP is referred to as the “PS OP Interests.” PSB, as the sole general partner of the OP, has full, exclusive and complete responsibility and discretion in managing and controlling the OP. PSB and its subsidiaries, including the OP and our consolidated joint ventures, are collectively referred to as the “Company,” “we,” “us,” or “our.” PS also owns 7.2 million common shares and would own 41.6% (or 14.5 million shares) of the outstanding shares of the Company’s common stock if it redeemed its common partnership units for common shares. Description of business The Company is a fully-integrated, self-advised and self-managed real estate investment trust (“REIT”) that owns, operates, acquires and develops commercial properties, primarily multi-tenant industrial, flex and office space. As of September 30, 2020, the Company owned and operated 27.5 million rentable square feet of commercial space in six states, comprised of 97 parks and 672 buildings. The Company also held a 95.0% interest in a joint venture entity which owns Highgate at The Mile, a 395-unit multifamily apartment complex located in Tysons, Virginia, and a 98.2% interest in a joint venture formed to develop Brentford at The Mile, a planned 411-unit multifamily apartment complex also located in Tysons, Virginia. The Company also manages for a fee approximately 0.4 million rentable square feet on behalf of PS.

Organization And Description Of Business

9 Months Ended

Sep. 30, 2020

Organization And Description Of Business [Abstract]

Organization And Description Of Business

1. Organization and description of business

Organization

PS Business Parks, Inc. (“PSB”) was incorporated in the state of California in 1990. As of September 30, 2020, PSB owned 79.0% of the common partnership units of PS Business Parks, L.P. (the “OP”). The remaining common partnership units are owned by Public Storage (“PS”). PS’s interest in the OP is referred to as the “PS OP Interests.” PSB, as the sole general partner of the OP, has full, exclusive and complete responsibility and discretion in managing and controlling the OP. PSB and its subsidiaries, including the OP and our consolidated joint ventures, are collectively referred to as the “Company,” “we,” “us,” or “our.” PS also owns 7.2 million common shares and would own 41.6% (or 14.5 million shares) of the outstanding shares of the Company’s common stock if it redeemed its common partnership units for common shares.

Description of business

The Company is a fully-integrated, self-advised and self-managed real estate investment trust (“REIT”) that owns, operates, acquires and develops commercial properties, primarily multi-tenant industrial, flex and office space. As of September 30, 2020, the Company owned and operated 27.5 million rentable square feet of commercial space in six states, comprised of 97 parks and 672 buildings. The Company also held a 95.0% interest in a joint venture entity which owns Highgate at The Mile, a 395-unit multifamily apartment complex located in Tysons, Virginia, and a 98.2% interest in a joint venture formed to develop Brentford at The Mile, a planned 411-unit multifamily apartment complex also located in Tysons, Virginia. The Company also manages for a fee approximately 0.4 million rentable square feet on behalf of PS.