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M1-1A/R6B Zoning District — New York City

M1-1A/R6B is a zoning district on New York City's zoning map.

M1-1A/R6B is a zoning district on New York City's zoning map. It allows industrial and commercial uses; new residences are generally excluded. 11 tax lots citywide carry M1-1A/R6B as their primary zoning designation.

Just 11 tax lots citywide carry this designation, and every recorded building on them is old: the median construction year is 1910, and 100% of the stock predates 1940. Neither the 1945-1975 boom nor construction since 2000 shows up at all — both sit at 0%. Only 9% of these lots are coded residential; the rest lean commercial and industrial, with 12 homes on file and 82% of lots recording floor area below their allowance.

What actually stands in this district

Only 11 tax lots citywide carry this designation, one of the smallest footprints profiled in this file, and every recorded building on them is old. The median construction year is 1910, and 100% of the stock predates 1940 — a complete prewar record with nothing built later to qualify it. Neither of the newer eras registers at all: 0% of buildings fall inside the 1945-1975 postwar boom, and 0% have gone up since 2000, meaning eight decades of citywide construction cycles have added nothing measurable to this particular footprint. Whatever stood on this small footprint a century ago is, on the current record, still substantially what stands there now — a stock defined by its age rather than by any layer added afterward.

The recorded land use here runs toward work rather than housing: commercial and office use covers 36% of lots, industrial use another 27%, and parking 18% — together accounting for the large majority of this small footprint and leaving only 9% of these 11 lots coded residential. Just 12 homes are on file across the entire designation, a modest count that follows directly from how few of these lots carry any residential use at all. The building classes on record split three ways evenly: factory and industrial buildings, garages, and store buildings each account for 18% of the recorded stock, with the remainder spread across other classes. Read together, the land-use figures and the building-class figures describe the same thing from two angles — a small, work-oriented pocket rather than a housing block.

Lots here run to a median of 4,115 square feet, with the largest recorded parcel reaching 8,550 square feet — modest by citywide standards but ample for the low, work-oriented buildings the records describe. Height stays low across the footprint: a median of 2 stories, and 0% of buildings rising above 6 floors, consistent with the industrial and commercial uses recorded above. Recorded floor area falls short of the citywide allowance on 82% of these 11 lots, and the typical gap runs to 0.9 FAR — a meaningful share of recorded capacity concentrated onto a very small number of parcels, even if the absolute square footage involved is modest given the lot sizes on file.

None of these lots, 0%, sit inside the mapped federal flood zone, and none, 0%, carry historic-district status on record — an unsurprising pairing for a footprint this small, this uniformly old, and this thoroughly non-residential. Between the age of the stock, the low height, and the absence of any flood or landmark overlay, the records describe a settled, low-lying pocket of the city that has changed very little since it was first built. With a footprint this small, every recorded lot amounts to close to its own case file; the floor-area and height limits that actually govern the designation are cited, lot by lot, in the tables above.

Bulk rules for M1-1A/R6B

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 M1-1A/R6B

Browse all 11 lots zoned M1-1A/R6B

M1-1A/R6B — quick questions

How many tax lots are zoned M1-1A/R6B?
11 tax lots citywide carry M1-1A/R6B as their primary zoning designation, per NYC municipal records as of 2026-07-11.
How old are the buildings recorded under this designation?
Uniformly prewar: the median construction year is 1910, and 100% of recorded buildings predate 1940. None of the stock falls inside the 1945-1975 boom or dates from 2000 or later.
What kind of buildings stand on lots carrying this designation?
Mostly commercial and industrial: land use here is 36% commercial and office, 27% industrial, and 18% parking, leaving only 9% of lots coded residential and 12 homes on file.
How many tax lots carry this designation?
Just 11 citywide, one of the smallest footprints in the file, at a median lot size of 4,115 square feet.
Is there recorded room to build more on these lots?
Yes, on the numbers: 82% of these 11 lots record floor area below their allowance, with a median residual of 0.9 FAR.
Are lots with this designation in a flood zone or historic district?
No, on both counts: 0% sit inside the mapped federal flood zone, and 0% carry historic-district status on record.

Keep learning

What do the M1-1A/R6B 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.