C6-4A Zoning District — New York City
C6-4A is a contextual, high-density General Central Commercial District (NYC Zoning Resolution § 11-122) in New York City.
C6-4A at a glance
It allows commercial uses, and generally also housing under the rules of a residential-equivalent district. As of right, the maximum residential FAR is 10 and the maximum commercial FAR is 10. 258 tax lots citywide carry C6-4A as their primary zoning designation.
Bulk rules for C6-4A
| Context | Residential FAR | Commercial FAR | Community facility FAR | Max lot coverage | Heights | Citation |
|---|---|---|---|---|---|---|
| As of right | 10 | 10 | 10 | 80% | — | NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22 |
| As of right — narrow street | 10 | 10 | 10 | 80% | Base 60–125 ft · Max 185 ft | NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22, § 23-432 footnote 2, § 23-431 |
| As of right — wide street | 10 | 10 | 10 | 80% | Base 125–155 ft · Max 215 ft | NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22, § 23-432 footnote 1, § 23-431 |
| Qualifying affordable housing | 12 | 10 | 10 | 80% | Max 235 ft | NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22 |
| Qualifying affordable housing — narrow street | 12 | 10 | 10 | 80% | Base 60–155 ft · Max 235 ft | NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22, § 23-432 footnote 2, § 23-431 |
| Qualifying affordable housing — wide street | 12 | 10 | 10 | 80% | Base 125–155 ft · Max 235 ft | NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22, § 23-432 footnote 1, § 23-431 |
Values from the NYC Zoning Resolution, verified 2026-10-06; site-specific overlays, special districts, and waterfront rules can modify them — run a full lookup for a specific lot.
About commercial districts
Commercial districts allow retail, office, and service uses, and most also allow housing under the rules of a residential-equivalent district. Commercial bulk is governed by § 33- of the NYC Zoning Resolution.
Contextual districts pair their floor-area ceilings with prescribed base and maximum building heights so new buildings mirror existing neighborhood form; non-contextual districts govern the envelope through more general height and setback rules, such as sky exposure planes. Commercial districts also allow residences under the rules of a residential-equivalent district, while manufacturing districts generally exclude new residences. Overlays and special purpose districts can modify any of this on a specific lot.
Example lots zoned C6-4A
- 620 Avenue of the Americas88,940 sq ft lot · 7.06 built FAR · built 1900
- 315 Park Avenue South14,250 sq ft lot · 25.01 built FAR · built 1911
- 122 5th Avenue21,646 sq ft lot · 11.28 built FAR · built 1900
- 7 West 21 Street24,000 sq ft lot · 11.41 built FAR · built 2014
- 343 Broadway28,608 sq ft lot · 13.84 built FAR · built 2005
- 200 Park Avenue South16,697 sq ft lot · 14.2 built FAR · built 1908
- 471 Park Avenue South21,558 sq ft lot · 20.85 built FAR · built 1970
- 122 East 23 Street22,202 sq ft lot · 9.75 built FAR · built 2016
- 215 Park Avenue South14,273 sq ft lot · 19.98 built FAR · built 1910
- 11 West 19 Street20,700 sq ft lot · 10.84 built FAR · built 1904
- 50 Lafayette Street28,566 sq ft lot · 10.83 built FAR · built 1900
- 111 Worth Street28,302 sq ft lot · 14.83 built FAR · built 2001
C6-4A — quick questions
- What is the maximum residential FAR in C6-4A?
- 10, as of right, per NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22. Site-specific overlays, special districts, and waterfront rules can modify it — run a full lookup for a specific lot.
- What is the maximum commercial FAR in C6-4A?
- 10, as of right, per NYC Zoning Resolution § 34-112 (C6-4A→R10A); § 33-122 (comm FAR); § 33-123 (CF FAR); § 23-22. Site-specific overlays, special districts, and waterfront rules can modify it — run a full lookup for a specific lot.
- Is C6-4A a contextual district?
- Yes. C6-4A is a contextual district — its bulk rules pair floor-area ceilings with prescribed base and maximum building heights intended to mirror existing neighborhood form.
Keep learning
What do the C6-4A rules mean for a specific lot?
PearlAudit resolves the governing zoning for any NYC tax lot — district, overlays, special districts — and cites the Zoning Resolution section behind every rule claim.
District data: NYC municipal records (Department of City Planning) and the NYC Zoning Resolution. See our sources and methodology. Parcel data as of 2026-10-20.