NYC Zoning Handbook:
Residential Districts: R10A

Designed to be compatible with existing older neighborhoods, R10A districts differ from R10 districts in greater lot coverage and modified height and setback regulations. Typical buildings are 19-story apartment buildings with high lot coverage and street walls at the street line. This district is mapped only in Manhattan. Areas that conform to R10A district regulations are mapped along the wide cross streets and avenues on the Upper West Side and Upper East Side.

The FAR in R10A districts is 10.0 which can be increased to 12.0 if lower-income housing is provided. The maximum building height and setbacks are determined by the building envelope which may not be penetrated by the building. The building envelope is controlled by the intersection of front and rear sky exposure planes that rise according to a specific ratio. Only the front sky exposure plane is applicable on wide streets. The Quality Housing Program is mandatory in R10A districts.

• Schematic Illustration (19-story Quality Housing building)

• Typical R10A Development (photo)

Basic Data

R10A: General residence district

Maximum FAR: 10.0 (to 12.0 with lower-income housing)

Maximum lot coverage:

Corner lot 100%

Interior or through-lot 70%

Maximum street wall: 150 feet

Minimum lot area per DU: 79 square feet

Maximum DUs per acre: 581

Required parking: 40% of dwelling units

Quality Housing Program: Mandatory