Jacob Landau, via 50 Sackman LLC, acquired a development site at 2246 Fulton Street, Cypress Hills, Brooklyn, for $11.5 million from Anthony J. Caggiano’s Kinsella Realty Inc. The property will host a 123-unit, 83,976 sq ft residential building. The site, with 15,000 sq ft built space and 48,000 sq ft air rights, is zoned M1-4/R7D. It holds potential for 63,000 sq ft development.