The 28,600-square-foot, 2-story, mixed-use building at 833-847 Flatbush Ave. in Brooklyn sold for $4.3 million or $150 per square foot. Gilbert Helman sold the storefront retail/residential property to 833 Flatbush LLC c/o JSA Realty Corp. At the time of the sale, GSI was approximately $400,000 per year NNN. Tenants include: Flatbush Carpets, Miracle Warehouse, Shelly Discounts and VIM Jeans. Robert Carillo and Steve Lorenzo of NAI Friedland Realty in Yonkers were the buyer's brokers. John Ritter of Long Island City's Sholom & Zuckerbrot represented the seller.