New York, NY Building Setbacks & Zoning: Lot Coverage Limits (2026)

NYC's lot coverage regulations work differently than many suburban municipalities. In low-density districts (R1 and R2), the Zoning Resolution limits lot coverage to approximately 35% of the lot area, enforced through required open space ratios and yard requirements. In R3-R5 districts, lot coverage limits range from 35-65% depending on the specific district and building type (detached, semi-detached, or attached). For medium and high-density districts (R6-R10), the Zoning Resolution generally does not impose a direct lot coverage percentage but instead controls bulk through FAR, open space ratios, and yard requirements. Contextual districts often have specific maximum lot coverage rules. Open space ratio (OSR) is defined as the ratio of open space to total floor area — in non-contextual R6-R8 districts, an OSR of 20-37 is typical. The Zoning Resolution also requires minimum front, side, and rear yards that indirectly limit lot coverage. Accessory structures (garages, sheds) count toward lot coverage calculations. DOB reviews all permit applications for zoning compliance.