Developer Prince Concepts is building on a growing collection of renovated buildings and semicircular huts in Detroit's Core City neighborhood, while distilling plans for other tenanted properties across the city on the east side.

The multifaceted Core City project clustered at Warren and Grand River avenues was announced in June 2018 with 50,000 square feet of retail, office and residential space, north across Grand River from Prince Concepts' existing Quonset hut apartment development, True North. They are west of Midtown near the intersection of I-96 and I-94.

One of the most recognizable pieces, a new wood-fired, plant-centric restaurant called Magnet in the old Magnet Radiator Works building, is expected to open the first week of September, said Prince Concepts owner Philip Kafka. Kafka and chef Brad Greenhill are partners on Magnet; they are also owners in Corktown Thai restaurant Takoi.

Astro Coffee's previously announced Ochre Bakery and roasting facility opened this spring. It sits in a hulking, former factory building separated from Magnet by an approximately $230,000 park that replaced a parking lot. Kafka calls that building the "Sawtooth." 313 Brazilian Jiu-Jitsu is set to replace a previous tenant there, Underdog Boxing Gym; and the Pantry, a 3,000-square-foot combined event space and commercial kitchen for Takoi and Magnet parent company Top Young Hospitality, has been completed. Ad agency Lafayette American moved into a pie-shaped building also clustered around the park.

Prince Concepts has also expanded its property holdings to the other side of the city. It is building out space at the northern edge of the near-east Villages neighborhoods for a yoga studio and Detroit Body Garage, a membership gym in West Village that plans to move from its current building late this year, according to owner Terra Castro.

Prince Concepts would own the 1,000-square-foot yoga studio set to open Nov. 1, called Santo Santo, with yoga instructor Samantha Jameson. Santo Santo and the 2,200-square-foot former auto shop that would house Detroit Body Garage are at Mack Avenue and Fischer Street.

Kafka also said he doesn't have plans yet for a former engine factory he bought in October at Algonquin Street and Kercheval Avenue. Detroit property records list the purchase price as $208,000.