Built to withstand a non-nuclear attack,[2] the former military structure is today used as a farmers' market, film studio, and venue for Toronto Roller Derby.

A de Havilland Canada aircraft production facility was already located on the property, and the site would eventually become Canadian Forces Base Downsview.

[1] The building became the central supply location for the Canadian military, and contained small items such as screws and nails, as well as larger inventory like aircraft engines and wings.

[1] The Supply Depot is a unique example of Cold War military construction in Canada, with heavily reinforced concrete used to create a fortress-like structure designed to survive a nuclear blast.

[8] An architectural review from 2009 wrote, "the building was constructed during the period of Cold War and reflects the uncertain mood of the time with its tough envelope and back-up systems".