According to the Real Deal, a new developer has taken over  construction of the 18-unit Park Slope condo project at 910 Union Street from Yachad Enterprises. American Development Group, the new company, expects to secure financing by mid-summer.

The three-story brick building, most recently a church and schoolhouse, is one of dozens of properties across from Prospect Park that are not protected by city landmark laws. That means that developers can do whatever they want architecturally without approval from the NYC Landmarks Commission.

Interestingly, 910 Union Street is among 1,350 buildings included in the first phase of a proposed expansion to the landmark district.  No matter. The Department of Buildings already approved the permit for the four-story addition two years ago, so the new developers can start building as soon as they’re ready.

“We want to be very respectful to the existing architecture, unlike our neighbor across the street,” Perry Finkelman, principal of American Development Group, told the Real Deal.

About the building’s 4-story addition: It will be red brick and glass, featuring apartments with large kitchens and master bedrooms. at families can congregate in.

One special unit in the back of the building would have soaring ceilings and a totally retro interior, complete with a restored wood-burning fireplace, glass doorknobs and 1950s-style, thunderbird green kitchen appliances, Finkelman said.