M1-8A/R9X Zoning District — New York City

This is among the smallest files in the comparison set: only 6 tax lots carry this designation citywide, and unlike many small designations, none of its recorded stat families come up empty — every measure below describes an actual recorded lot rather than a coverage gap, a completeness that is itself unusual at this scale. Land use is as uniform as the scale is small: 100% of these lots are coded for industrial and manufacturing use, with nothing recorded in any other category. Recorded building classes lean the same way — factory and industrial buildings account for 67% of the file, warehouses another 17%, and a miscellaneous-coded class the remaining 17% — a stock built for production rather than housing or offices, with no trace of the office, retail, or residential classes that show up elsewhere in this batch.

Every one of these 6 lots, 100%, records floor area below its allowance, and the gap is large: a median residual of 8 FAR. On a designation coded almost entirely for manufacturing use, that reads less like unused housing capacity and more like the low-slung industrial building pattern that has always characterized this kind of ground — production buildings rarely fill a site to its full permitted bulk the way apartment towers do, and a small file like this one can show a headroom share of 100% without describing any broad development trend. The rules tables above carry the specific allowance this designation permits, with citations; what the record shows here is simply how much of it currently sits unbuilt, lot by lot.

The recorded stock is old and low. The median construction year is 1931, with 60% of buildings predating 1940 and 40% dating from the 1945-1975 postwar boom — between the two windows, the file accounts for its entire recorded stock, with 0% built since 2000. Height matches the era: a median of 1 story, and 0% of recorded buildings rise above 6 floors, a flat industrial profile with none of the towers found on office-heavy designations elsewhere in this batch. Lots run to a median of 6,800 square feet, with the largest on record reaching 40,077 square feet — modest by industrial standards but well above a typical residential parcel, and a size range consistent with small, discrete manufacturing sites rather than one large assembled holding.

Housing is essentially absent from the file: 0% of these lots are recorded as residential, though the file still counts 5 units total on record, a small figure that fits a designation built around production rather than housing. None of the lots, 0%, sit inside the mapped federal flood zone, and none, 0%, carry historic-district status — a plainly industrial corner of the map by every measure this file tracks, with no overlay of any kind layered on top of it on record. Each of the 6 lots carries its own recorded specifics down to the individual tax lot, a level of detail this file's small scale makes easy to check one parcel at a time.