M1-5/R9A Zoning District — New York City

The median building on the roughly 70 tax lots carrying this designation dates to 1895, and the age record is unusually consistent around that figure: 94% of recorded buildings predate 1940, while just 3% have gone up since 2000 and none, 0%, fall inside the 1945-to-1975 postwar boom. That is among the oldest and most tightly clustered age profiles in this family — a stock that was substantially finished before the modern century began and has seen only light addition since, with almost none of the mid-century rebuilding that touched so much of the wider city. Recent construction, at just 3%, has done almost nothing to change the character this 1895 median already sets.

That age carries a heavy overlay: 87% of these lots also carry historic-district status on record, meaning landmark review sits atop the zoning designation for nearly nine in ten parcels here. Office buildings lead the recorded building classes at 31%, elevator apartment buildings follow at 24%, and store buildings add 16% — a working, mixed-use pattern rather than a purely residential one. Land use runs 46% commercial-and-office, 25% mixed residential-and-commercial, and 24% multi-family elevator, a file that tracks the building-class mix closely and confirms the same working character the class file already suggests, with no single recorded category on either measure standing far apart from the others.

Height on record runs to a median of 6 stories, with 46% of buildings rising above that figure — a genuinely mid-rise profile for a stock this old. Lot sizes are modest and tightly grouped: a median of 5,292 square feet, with a 90th percentile of 14,627 square feet, ground scaled to the mid-rise office and store buildings the class file shows leading. Just over half of these lots, 51%, are coded residential, and the file counts 894 homes on them — a real but secondary residential layer beneath the office and store-building classes leading the file.

None of the 70 lots, 0%, sit inside the mapped federal flood zone, an absence consistent with the inland, densely built character this age and historic-district profile already suggests. The development file shows 69% of lots recording floor area below their allowance, with a median residual of 1.5 FAR — a narrower recorded gap than some comparable designations, consistent with a stock this old and this densely landmarked having already filled in much of what its ground can carry. Each lot's own page carries its specific figures, and the rules tables above set out the governing numbers with their citations.