I believe this is either B5 or B6.
Permits Filed for 41-Story Tower at 700 Atlantic Avenue in the Pacific Park Complex - New York YIMBY
YIMBY has the latest permits filed for a 41-story mixed-use building at 700 Atlantic Avenue in Prospect Heights, Brooklyn.
The proposed 397-foot-tall development will total 587,200 square feet, with 580,324 square feet designated for residential space and 4,362 square feet for commercial space. The building will have 682 residences, most likely rentals based on the average unit scope of 850 square feet.
Dattner Architects is listed as the architect of record.