Developer Urban Standard Development is now seeking a variance from the Board of Standards and Appeals to build three extra stories as part of a 10-story, nine-unit residential project at 142 West 19th Street, in Chelsea. The developer requires a variance from the city to build a project taller than seven stories, the height of the adjacent buildings, due to zoning rules that restrict new buildings on narrow lots from being taller than their immediate neighbors, DNAinfo reported. Filings with the Buildings Department currently resemble the 10-story proposal. If a variance is granted, the project would measure 16,903 square feet and its residential units would probably average 1,803 square feet apiece, indicative of condominiums. Two of them would be duplexes. Earlier this year, YIMBY revealed a preliminary rendering of a seven-story building that can be built without a variance. Think! Architecture and Design is behind the design. A four-story, seven-unit residential building must first be demolished.