M1-5/R7X Zoning District — New York City

Scale sets this designation apart from the rest of this batch: roughly 470 tax lots citywide, more than any other profiled here, sitting under the oldest recorded stock in the group — a median construction year of 1887, with 88% of buildings predating 1940, the highest prewar share in this comparison set. Just 2% of the recorded stock falls inside the 1945-1975 postwar boom, among the thinnest such shares here, while 8% has gone up since 2000. At this scale, a stock this consistently old describes a genuinely large fabric of nineteenth-century construction still standing and still recorded lot by lot.

86% of these lots also carry recorded historic-district status — the highest such share among the designations in this batch, and a substantial majority of a 470-lot set rather than a handful of protected blocks within it. Landmark review, in other words, sits on top of the zoning map for most of this designation's recorded footprint, layered onto the old building stock described above.

By recorded class, elevator apartment buildings lead at 25%, condominiums follow at 20%, and store buildings add 19%. Land use runs 42% mixed residential-and-commercial, 24% multi-family elevator, and 21% commercial-and-office. 75% of lots are recorded as residential, among the higher shares in this batch, and the file counts 5,088 homes on them — the largest recorded population of any designation profiled here.

55% of these lots record floor area below their allowance, with a median residual of 0.3 FAR — broad but shallow headroom, on lots running to a median of 2,800 square feet. Height reaches a median of 5 stories, with 22% of recorded buildings rising above 6 floors. 12% of lots sit inside the mapped federal flood zone. What the zoning actually permits on any one of these 470 lots is set out, with its citations, in the tables above — this page describes only what stands.

Lot size here runs tighter than the scale of this designation might suggest: a median of 2,800 square feet reaching just 8,700 square feet at the 90th percentile, a narrow range for a designation mapped across roughly 470 tax lots. That tightness, combined with the historic-district and flood-zone shares described above, describes a densely platted, closely regulated corridor rather than one with room for widely varied parcel sizes. The building-class file splits across three recorded types without a single majority — elevator apartment buildings at 25%, condominiums at 20%, and store buildings at 19% — a genuinely mixed vertical fabric standing on ground that carries some of the heaviest recorded landmark coverage in this batch.