M1-4/R9A Zoning District — New York City

Few designations in this file are mapped across as few lots as this one: just 2 tax lots citywide. With a sample that small, the recorded facts read less like a trend than like a direct description of two individual parcels, and what stands out is how often those two lots split the numbers exactly in half. By land use, one lot's category — mixed residential-and-commercial use — accounts for 50% of the designation, with the remaining 50% in a separate recorded land-use category. Building classes split the same way, 50% and 50% between two recorded classes, reinforcing the sense that this designation's file really describes two distinct parcels rather than a pattern across many.

The year-built record follows the identical pattern: 50% of the recorded stock predates 1940 and 50% has gone up since 2000, with 0% from the 1945-1975 postwar boom in between. The median construction year, 1923, describes the older of what appear to be two very different buildings rather than anything in between them. Floor heights sit low across both lots — a median of 1 story, with 0% rising above 6 floors, consistent with a small, low-rise pair of parcels rather than anything approaching the taller stock recorded elsewhere in this file.

Half of this designation's ground sits inside the mapped federal flood zone: 50% of lots, a description of the regulatory boundary rather than a record of which of the two has actually taken on water. Neither lot, 0%, carries historic-district status on record. Half of the designation, 50%, is coded residential, and together the two lots record just 2 units total — a genuinely small footprint by any measure in this file, and one where every recorded share above effectively describes one lot or the other rather than a broad population.

Lot size is the one measure that does not split here: both the median and the 90th-percentile figure land on the same 19,900 square feet, consistent with a two-lot sample where percentile math collapses toward a single value rather than describing a genuine spread. The development ledger shows both lots, 100%, recording floor area below their allowance, at a median gap of 3.6 FAR — full recorded headroom on both halves of this two-lot designation, whichever of the two eras above any given lot happens to belong to. The floor-area and height rules that govern either lot are detailed, with citations, in the tables above.