The Kranzberg Arts Foundation is growing in Grand Center by taking over the historic Cadillac Building, which will be refitted with a small theater, offices and event space.

.ZACK, the four-story building’s new name, will include what Kranzberg officials said Monday will be the St. Louis arts district’s first performing-arts incubator, at 3224 Locust Street.

As many as six arts organizations will share the 200-seat theater to be built on the building’s first floor, officials said. The theater will have offices, a scene shop and prop storage.

Other .ZACK features will include a restaurant and catering operation by David Kirkland, formerly executive chef at Café Osage. Kirkland’s catering operation will serve the event space in the building’s top-floor ballroom.

The third floor will be available as commercial space and live/work apartments for artists, said Chris Hansen, the foundation’s director of operations.

He said .ZACK’s first phase of the lobby, theater and performing arts incubator, as well as the catering operation, should be ready in August. U-Studios, of Swansea, is the project’s designer. The second phase will include Kirkland’s first-floor restaurant.