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M1-6A/R9 Zoning District — New York City

M1-6A/R9 is a zoning district on New York City's zoning map.

M1-6A/R9 is a zoning district on New York City's zoning map. It allows industrial and commercial uses; new residences are generally excluded. 10 tax lots citywide carry M1-6A/R9 as their primary zoning designation.

Records for lots carrying this designation show two figures at their maximum together: 100% of these roughly 10 lots sit inside the mapped federal flood zone, and 100% also record floor area below their allowance, with a median residual of 6.6 FAR. Lot sizes vary enormously, from a median of 23,100 square feet to a 90th percentile of 128,332 square feet. Warehouses, factory-and-industrial buildings, and mixed residential-and-commercial buildings each account for 30% of the recorded building classes.

What actually stands in this district

This designation pairs two figures at their maximum at once: every one of these roughly 10 lots, 100%, sits inside the mapped federal Special Flood Hazard Area, and every lot, again 100%, records floor area below its allowance, with a median residual of 6.6 FAR. That combination — full flood exposure by the regulatory map alongside full recorded headroom — is not one every designation in this batch produces together; several carry one figure at an extreme without the other following suit. A flood share this complete is a statement about the federal map covering these 10 parcels, not a record of water actually reaching any one of them.

The recorded building classes split three ways in an even tie: warehouses, factory-and-industrial buildings, and mixed residential-and-commercial buildings each account for 30% of the file. Land use leans industrial more heavily, with industrial-and-manufacturing use covering 60% of lots, mixed residential-and-commercial use another 30%, and vacant-land use the remaining 10%. Despite that industrial lean, 30% of lots are still coded residential, and the file counts 21 units across the designation — a small population set against a stock that reads, on balance, as working and industrial rather than residential.

Lot sizes vary more here than almost anywhere else in this batch: a median of 23,100 square feet against a 90th percentile of 128,332 square feet, a spread that points to a few very large parcels sitting alongside more ordinarily sized ones rather than one uniform scale across all 10 lots. Buildings stay uniformly low across the stock — a median of 2 stories, with 0% of the recorded buildings rising above 6 floors, a height profile that holds steady even across that wide range of lot sizes.

The construction record leans prewar: a median year of 1931, with 67% of buildings predating 1940. The 1945-1975 postwar boom left a real mark too, at 33% of the stock, while 0% of buildings have gone up since 2000 — no recent construction on record at all, a quieter recent chapter than several other designations in this batch show. None of these lots, 0%, carry historic-district status, leaving the flood map and the development ledger as the two figures that most set this designation apart from its neighbors in the batch. Individual figures for any one of these 10 parcels sit on that lot's own page, and the rules that govern floor area and height for this designation are cited, with their sections, in the tables above.

Bulk rules for M1-6A/R9

This code appears on the City's zoning map, but it doesn't have a standalone bulk-rules table — paired and non-standard map designations are governed at the individual-lot level. Run a lookup on a specific address for its governing rules.

About manufacturing districts

Manufacturing districts allow industrial and many commercial uses; new residences are generally excluded. Manufacturing bulk is governed by § 43- 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 M1-6A/R9

Browse all 10 lots zoned M1-6A/R9

M1-6A/R9 — quick questions

How many tax lots are zoned M1-6A/R9?
10 tax lots citywide carry M1-6A/R9 as their primary zoning designation, per NYC municipal records as of 2026-07-11.
Are lots with this designation in a flood zone?
Yes, entirely: 100% of these roughly 10 lots sit inside the mapped federal flood zone.
Is there recorded room to build more on these lots?
Yes, across the board: 100% of lots record floor area below their allowance, with a median residual of 6.6 FAR.
What kind of buildings does this designation's stock consist of?
An even three-way split: warehouses, factory-and-industrial buildings, and mixed residential-and-commercial buildings each account for 30% of the recorded classes.
How much do lot sizes vary under this designation?
Considerably: a median of 23,100 square feet against a 90th percentile of 128,332 square feet.
How old are the buildings recorded here?
Mostly prewar: a median year of 1931, with 67% predating 1940. The 1945-1975 boom added 33%, and 0% has gone up since 2000.

Keep learning

What do the M1-6A/R9 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 2026-07-11.