Halcor Group, a real estate company headquartered in Calgary and with an office in Torrance, Calif., presented Wednesday night to a city board concepts that include an addition to and conversion of the building. As presented, it would include up to seven stories of residential space built to the west behind it.

The Detroit Historic District Commission took no action on the possible project Wednesday night, said Richard Hosey III, a board member.

The building is "the only intact example of a 1950s television studio left in the city," according to an application for addition to the National Register of Historic Places, which was approved last year, the Detroit Free Press reported.

The popular shows "Sagebrush Shorty" and "Sir Graves Ghastly" were produced there. The building was designed by John Volk, who was the architect for properties for the Vanderbilt, DuPont, Ford, Dodge and Pulitzer families, the application says.