Available Summer, 2025: 644 Mason Street, 13,460 rentable square feet "RSF", office, flex, light industrial. Rare opporunity to lease a standalone building, for office, flex or light industrial use. 644 Mason is located directly on Crissy Field, with spanning views of the Golden Gate Bridge and SF Bay. 644 Mason has an open concrete floor, interior beams, and four operable loading dock doors. The space also includes three private offices, kitchenette, restrooms, and ample parking adjacent to the space. Please reach out to the leasing team directly to tour, leasing@presidiotrust.gov.