Exterior work is continuing on The Paxton, a 511-foot-tall mixed-use skyscraper at 540 Fulton Street in Downtown Brooklyn. Designed by Marvel Architects and developed by Jenel Management, the 43-story, 330,000-square-foot building will yield 327 residential units, 71,844 square feet of commercial space, and 22,054 square feet of retail in the podium. M.N.S. is handling sales and marketing for the homes, which range from studios to three-bedroom layouts. The property is located at the intersection of Flatbush Avenue and Fulton Street.