Construction is rising on 501 Ninth Avenue, a 12-story residential building in Midtown, Manhattan on the border of Hudson Yards and the Garment District. Designed by Archimaera Architecture and developed by ZD Jasper Realty under the ZDJ Hudson Yards LLC, the structure is being constructed alongside its 120-foot-tall identical counterpart at 489 Ninth Avenue at the southern end of the parcel. The two buildings will collectively span 220,000 square feet and yield 174 condominium units with an average scope of 970 square feet, as well as ground-floor commercial space, a cellar level, and a 30-foot-long rear yard. Warner Construction Services Inc. is the general contractor for both properties, which are bound by West 38th Street to the north, West 37th Street to the south, Ninth Avenue to the east, and Dyer Avenue to the west.