New York, NY · zoning record
The dimensional standards that govern what you can build in the R3A district, straight from New York's ordinance, with every figure quoting its source. Check a specific address to see how these rules apply to a real lot.
Free · Every figure cited · Read from the current code (2026-10-02)
These are the letter-of-the-law limits for the base R3A district. Overlays (historic, neighborhood plan, and similar) can tighten them; a specific address check resolves the overlays that actually apply.
Smallest conforming lot.
“Single- or two-family detached , or zero lot line , where permitted | R3A R4-1 R4A R4B R5A R5B R5D | 2,375 | 25”Chapter 3 - Residential Bulk Regulations in Residence Districts › Lot Area and Lot Width Regulations in R1 Through R5 Districts › Minimum Lot Area (in sq. ft) › R3A row · New York code · read 2026-10-02
Narrowest conforming lot.
“Single- or two-family detached , or zero lot line , where permitted | R3A R4-1 R4A R4B R5A R5B R5D | 2,375 | 25”Chapter 3 - Residential Bulk Regulations in Residence Districts › Lot Area and Lot Width Regulations in R1 Through R5 Districts › Minimum Lot Width (in ft) › R3A row · New York code · read 2026-10-02
Every figure above is quoted verbatim from the current ordinance. We never substitute a typical-for-zone default: a field absent from the record shows nothing, not a guess.
See how these standards resolve on a specific parcel, with the overlays that actually apply, in about 20 seconds.
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