R9 Zoning District — New York City

Flood exposure is the standout figure for this designation: 28% of its roughly 260 tax lots sit inside the mapped Special Flood Hazard Area, the highest share recorded among the ten designations profiled in this batch. That is a statement about the federal regulatory map drawn over these lots, not a ledger of which parcels have actually taken on water — always checkable on each lot's own page, and worth confirming directly for anyone with a specific parcel in mind. Among the ten designations covered in this batch, no other carries as large a share of its footprint inside the mapped flood boundary.

The recorded land use leans commercial and mixed rather than purely residential: mixed residential-and-commercial use covers 42% of lots, with multi-family elevator use and commercial-and-office use each adding 12%. Only 63% of lots overall are coded residential, one of the lower shares in this batch. Walk-up apartment buildings lead the recorded building classes at 22%, with elevator apartment buildings at 16%, a spread that tracks the mixed commercial-and-residential land-use pattern described above. None of the remaining recorded classes approaches either figure, leaving the building-class mix, like the land-use mix, spread across several categories rather than concentrated in one.

Construction here is prewar-leaning but not overwhelmingly so: a median year built of 1920, with 72% of recorded buildings predating 1940 and 12% from the 1945-1975 boom — a larger boom-era share than most other designations in this batch. Height runs to a median of 5 stories, with 27% of buildings rising above 6 floors, the tallest recorded share among the districts covered here, adding a notable high-rise layer on top of the flood exposure and mixed-use pattern already described.

Lots run to a median of 2,542 square feet, though the 90th percentile reaches 26,168 square feet, among the widest lot-size spreads in this batch — a gap that points to a mix of small parcels alongside a handful of much larger assembled sites. Recorded capacity is broad as well: 84% of lots show floor area below their allowance, with a median residual of 4.4 FAR, the largest recorded gap in this batch. A recorded 7% of lots sit inside designated historic districts, a modest overlay compared with the flood and development figures that define this designation's profile. Together, the flood share and the development gap described above make this one of the more distinctive recorded profiles among the ten designations covered in this batch. The rules governing floor area and height on any one of these lots, citation included, are tabulated above, separate from what already stands here.