R6B Zoning in NYC: FAR, Height and Setbacks

R6B is a contextual district for rowhouse-scale buildings: 2.00 FAR, a 55 ft height limit, and front walls lined up with the neighbors.

Floor area (FAR)

• Standard maximum residential FAR: 2.00 (ZR 23-22).
• With qualifying affordable housing or qualifying senior housing: 2.40 FAR.
• Community facility FAR: 2.00, with lot coverage up to 80% on corner lots and 60% on interior or through lots (ZR 24-11). Some uses, such as non-profit institutions with sleeping accommodations, can have lower limits (ZR 24-111).
• FAR (floor area ratio) is total zoning floor area divided by lot area. On a 2,500 sq ft lot, 1.00 FAR means 2,500 sq ft of floor area.
• Maximum dwelling units: residential floor area divided by 680, the dwelling unit factor (no factor for qualifying senior housing) (ZR 23-52).

Height and setbacks

• Street wall rises to at least 30 ft and at most 45 ft before a setback; maximum building height 55 ft. With qualifying affordable or senior housing: base up to 45 ft, building up to 65 ft (ZR 23-432).
• Above the base, the building must set back at least 10 ft from a wide street or 15 ft from a narrow street; the setback can shrink 1 ft for each foot the street wall sits back from the street line, to no less than 7 ft (ZR 23-433).
• The street wall must line up with neighboring buildings: no closer to the street than the closest one and no farther than the farthest one (ZR 23-431).

Yards, lot coverage and lot size

• Front yard: None required (ZR 23-322).
• Side yards: Detached one- or two-family houses need two side yards of at least 5 ft each. Other buildings need none, but any open area along a side lot line must be at least 5 ft wide (ZR 23-335).
• Rear yard: On interior lots, detached and zero lot line buildings need a 20 ft rear yard up to 75 ft high. Semi-detached and attached buildings need 30 ft on lots narrower than 40 ft, and 20 ft on lots 40 ft or wider. Where a building rises above 75 ft, that portion needs 30 ft (ZR 23-342). Shallow lots that existed in 1961 can get a reduced rear yard, never under 10 ft.
• Lot coverage: 80% on interior and through lots, 100% on corner lots (ZR 23-362).
• Minimum lot size: 2,375 sq ft and 25 ft wide for a detached or zero lot line one- or two-family house; 1,700 sq ft and 18 ft wide for other residences (ZR 23-12).

What you can build in R6B

Any type of residence is permitted, from houses to apartment buildings (ZR 22-121).

City of Yes changes

• City of Yes for Housing Opportunity (adopted December 5, 2024) set separate limits for qualifying affordable housing (Mandatory Inclusionary Housing developments, Universal Affordability Preference (UAP) developments, or buildings under an affordable housing regulatory agreement) and qualifying senior housing. In R6B they can reach 2.40 FAR versus 2.00 for standard buildings, with taller height limits (ZR 23-22, 23-432, 12-10).
• Buildings in R6 through R12 have no front yard requirement, and lot coverage is 80% on interior lots and 100% on corner lots (ZR 23-322, 23-362).

R6B zoning FAQ

Nearby districts

• R6
• R6A