R4B
Residential R4B
New York City zoning district · 15,447 parcels
R4B is defined as a Residential R4B in New York City. The maximum building height is 21 feet. There are 15,447 parcels classified under this district. R4B is a low-medium-density residential zoning district in New York City permitting one- and two-family housing with a maximum FAR of 0.9. Buildings in R4B districts have a semi-detached and small multifamily character with a general height limit of 35 feet (2 stories). This is a lower-density contextual district with strict height limits, preserving the low-rise character of brownstone and rowhouse neighborhoods.
The most low-rise R4, for homeowners on rowhouse and brownstone blocks. R4B allows one- and two-family houses with a strict 21-foot height cap — barely 2 stories. FAR (floor-area ratio, total floor space versus lot size) is 0.9. The tight limit deliberately preserves the small, even, low-rise look of older attached-house streets. No surprise towers next door.
Development standards
R4B regulates building height, lot size, setbacks, and lot coverage across 15,447 parcels in New York City.
Frequently asked questions
Code references
Section NYC Zoning Resolution
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