M1-4A Zoning District — New York City

This designation's recorded land use is overwhelmingly industrial: 69% of lots by land use, with commercial-and-office use a distant second at 12%, and a further, smaller share of lots recorded under yet another land-use category. Just 6% of lots are coded residential, though the file still counts 121 recorded units somewhere within this working footprint of roughly 67 tax lots citywide — evidence that a small residential presence can persist even inside a footprint the land-use figures describe as almost entirely industrial. Building classes on record lead with one class at 39% of the mix, a second at 28%, and a third at 13% — concentrated in a small number of categories, consistent with an industrial-dominant stock where a handful of building types account for nearly all of what is recorded.

The file carries no reliable development-capacity coverage for this designation, so no headroom share or residual-FAR figure can be cited here — an absence in the record, not a claim about what could or could not be built on any given lot. For a designation this heavily industrial, that gap in the ledger means any question about recorded building capacity has to be answered lot by lot rather than from a designation-wide figure; the age, land-use, and lot-size records below still stand on their own.

The recorded construction history shows a notably strong postwar presence: 30% of buildings date from the 1945-1975 boom, a considerably larger share than most designations in this file record, alongside 48% predating 1940 and 11% built since 2000. The median construction year, 1940, sits right at the edge between the prewar era and everything that followed — a designation whose typical building is recorded as having gone up right at that historical dividing line. Heights stay low throughout — a median of 2 stories, with just 3% rising above 6 floors, a flat industrial landscape rather than a vertical one.

On a median lot of 9,000 square feet, reaching as high as 40,776 square feet at the 90th percentile, 6% of lots sit inside the mapped federal flood zone, a description of the federal map's boundary rather than a record of actual flooding. None of these lots, 0%, carry historic-district status on record, an absence consistent with a working, industrial footprint rather than one built for architectural preservation. The floor-area and height rules that govern this designation's roughly 67 tax lots appear, with citations, in the tables above.