R4A Zoning in NYC: Low-rise, one- and two-family
R4A districts are low-density districts permitting one- and two-family homes including rowhouse forms, with slightly more floor area than R3. Citywide, 25,854 tax lots carry a primary R4A designation.
On the average R4A lot, roughly 31% of the allowed residential floor area is unused — the raw material of a rezoning-era investment thesis. Infill and two-family product works here; look for lots where built floor area sits well below what the district allows.
Where R4A lots are
- Queens: 14,850 parcels
- The Bronx: 8,715 parcels
- Brooklyn: 2,167 parcels
- Staten Island: 122 parcels
FAQ
What is R4A zoning in NYC?
R4A is one of low-density districts permitting one- and two-family homes including rowhouse forms, with slightly more floor area than R3. Across New York City, 25,854 tax lots carry a primary R4A designation.
How built-out are R4A lots today?
On average, R4A parcels are built to a floor-area ratio of 0.69 against an average maximum residential FAR of 1 — roughly 31% of allowed floor area is unused on the average lot. Individual lots vary widely; check any specific parcel on the free NYRezone map.
Does City of Yes affect R4A parcels?
25,854 R4A parcels flag as potentially affected by at least one City of Yes for Housing Opportunity program in NYRezone's screening model. Program applicability is parcel-specific — verify each lot.
Screen every R4A parcel free
The NYRezone map scores all 25,854 R4A lots on unused floor area, City of Yes eligibility, and assemblage potential. No login.
Related R4 districts
Parcel figures derive from NYC Department of City Planning PLUTO data as processed by NYRezone. Zoning regulations are summarized for orientation only — always verify specifics in the NYC Zoning Resolution and with the Department of City Planning before acting on any parcel.