M1-3A Zoning District — New York City

Some designations in this batch are mapped across thousands of tax lots; this one is mapped across exactly one. That single recorded lot is also among the oldest building starts in this batch, dating to 1895 on record — well over a century old — and its entire stock, 100%, falls before 1940. None of it, 0%, dates from the 1945-1975 postwar boom, and none, 0%, has been built since 2000. Where other designations in this file describe a pattern across a citywide footprint, this one describes a single parcel's own history, with no citywide share to average across and no wider pattern to compare it to beyond that one recorded lot.

The recorded building class on that lot is an institutional one, filed under an asylums-and-homes classification, covering the full recorded stock at 100%. Land use matches exactly: public-facility-and-institutional use also covers 100% of the ground. The lot is coded 0% residential on record, though the file still counts 1 recorded unit on it, consistent with a single non-residential structure rather than a housing building of any kind. There is no mix to describe here the way there is for larger designations — one lot, one building class, one land-use code, all at 100%, with nothing else on record to weigh against it.

The lot itself runs to 82,400 square feet — both the median and the 90th-percentile figure, since there is only the one parcel to measure, and a sizable footprint for a single tax lot, larger than the median recorded for several designations elsewhere in this batch that span far more ground in total. The building on it stands at a single recorded story, and 0% of the stock rises above 6 floors, a height figure that, again, describes just this one structure rather than a range across many buildings.

Neither flood-zone nor historic-district status is recorded on this lot: 0% for each. The file also carries no reliable development-capacity coverage here, an absence in the record rather than a claim about buildable room one way or the other — with only one lot on file, that absence covers the entire designation rather than a partial share of it, unlike designations elsewhere in this batch where such an absence touches only some lots and not others.

A designation mapped this narrowly still keeps its own page for the one recorded parcel, with building class, age, size, and flood and historic status all on file individually. The floor-area and height rules that govern this designation, whatever they permit on a lot this size, are set out with citations in the tables above, separate from the recorded stock described here.