M1-3A/R7A Zoning District — New York City

Two separate recorded shares reach 100% at once on this designation's lots, a combination none of the other nine in this batch shows: every one of its roughly 16 tax lots sits inside the mapped federal flood zone, and every one also records floor area below its allowance. The flood figure is a statement about the regulatory boundary on the federal map, not a record of which lots have actually flooded; the development figure is a statement about recorded stock against allowance, with a median residual of 3 FAR across the designation. Together they describe a small footprint where both fronts of exposure and recorded room show up on essentially every lot rather than a partial share, a pairing that sets this designation apart from others in the batch where one of the two figures runs closer to zero.

That full development gap sits on a stock that is old on the whole: 85% of recorded buildings predate 1940, and the median construction year is 1931. The 1945-1975 postwar boom left only an 8% mark, and just 8% of buildings have gone up since 2000 — a designation where recent decades have added no more to the stock than the boom era did, leaving the great majority of what stands here as prewar construction.

Store buildings lead the recorded classes at 25%, garage buildings follow at 19%, and two-family homes add 13% — a mix of small commercial and household structures rather than a single dominant building type. Land use runs mixed residential-and-commercial at 25%, with one- and two-family use and multi-family walk-up use tied at 13% each. Half these lots, 50%, are coded residential, and the file counts 61 homes across the designation — a modest total that matches a footprint this small and keeps this designation among the smaller recorded unit counts in the batch.

Lots run small, a median of 2,500 square feet with the 90th percentile reaching 7,500 square feet, and buildings rise to a median of 2 stories, with 8% recorded above 6 floors — a low-rise profile that matches the small ground beneath it. None of these lots, 0%, carry historic-district status on record. The roughly 16 lots here each carry their own flood status and development figures on file; governing floor-area and height rules for the designation, sourced and cited, appear in the tables above rather than in this summary of recorded stock.