M1-2/R6A Zoning District — New York City

At 1,300 tax lots citywide, this is one of the larger designations in this batch, and the housing count on record reflects it: 16,666 homes, by far the largest figure any designation here carries. That density comes from mid-rise construction rather than height or lot size alone — the median lot runs to 2,500 square feet, unremarkable on its own, but the recorded building stock packs far more units onto that footprint than the smaller designations in this file manage.

The recorded building classes lead with walk-up apartment buildings at 22%, followed by condominiums at 15% and mixed residential-and-commercial buildings at 14%. Land use tracks a similar mixed-residential pattern: mixed residential-and-commercial use covers 29% of the 1,300 lots, multi-family walk-up use another 23%, and one- and two-family use 11%. Altogether 74% of lots are coded residential — a high share for a designation this large, and one that helps explain how the housing count climbs as high as it does even though no single lot is unusually large or unusually tall on its own.

By construction year, 62% of the recorded stock predates 1940, with a median year of 1930. The 1945-1975 postwar boom added a modest 7%, while 27% of buildings on record date from 2000 or later — a substantial recent-decades share for a designation of this scale, and one of the larger since-2000 shares recorded anywhere in this batch. Heights run to a median of 3 stories, with 7% of recorded buildings rising above 6 floors, and lots spread from that 2,500-square-foot median to a 90th-percentile figure of 12,500 square feet — a wider range than the tightest designations in this file but unremarkable next to the largest.

72% of these 1,300 lots carry recorded floor area beneath their allowance, and the typical residual reaches 1 FAR — a wide gap given how many lots and how many homes it covers. The federal flood map places 14% of these lots inside the mapped flood zone, a statement about the regulatory boundary rather than a record of actual flooding, and none, 0%, carry historic-district status on record. Each of the 1,300 lots carries its own recorded specifics beyond the citywide numbers quoted here; the floor-area and height rules governing the designation, citations included, are in the tables above, alongside the rules for every other designation profiled in this file.