Another amalgamation of shipping containers is set to rise in the south part of Detroit's Midtown.

The developer that rehabbed 21 of them to make a food hall plans to add around 50 more to the mix in a $6 million companion project.

Detroit Rising Development announced Thursday its designs for a three-story building with office, "micro-retail" and possibly a brewery next door to Detroit Shipping Co., the restaurant hub and event space that opened in June 2018.

The planned 21,000-square-foot structure at 444 Peterboro St. near Cass Avenue is nearly twice as big as the original. It's owned separately from Detroit Shipping Co., but with some common partners,founding partner Jon Hartzell said.

Pending City Council approval of an approximately $360,000 land sale, Hartzell said he expects to start the 10-month construction process in November.

"Ultimately, we need more office, walkability, day crowd in the area," Hartzel said. "We looked at the land and did probably five to six iterations and mixes. Residential, residential-retail, more outdoor, and the answer for us, the best use at this time, was office and retail."

The so-called 444 Building would offer space for around 16 small retailers, a cafe and two anchor tenants on its ground floor. The third floor is reserved for a larger, 6,800-square-foot tenant, while the second floor is planned with 17 private office spaces and shared common areas.

Ideally, Detroit Shipping Co. partners would extend their liquor license to the 444 Building and build in a brewery and brewpub, according to Hartzell. But it's still being debated. The separate buildings would connect with outdoor space — so one could walk with an open beer between the two.