Upper East Side-Lenox Hill-Roosevelt Island, Manhattan

Lenox Hill-Roosevelt Island's land-use file looks different from most of its residential Upper East Side neighbors: the single largest category, at 36% of lots, is mixed residential-and-commercial rather than a pure housing type, with multi-family walk-up buildings a secondary 21% and multi-family elevator buildings 14%. That mix carries through to scale — the neighborhood's roughly 1,400 tax lots hold 62,600 housing units on record, and 83% of lots are coded residential overall, a large population living alongside a meaningful share of commercially coded parcels. That combination of scale and mixed use differs from most of the Upper East Side files profiled here, which lean more heavily toward single-purpose residential land-use coding.

Building-class records show walk-up apartment buildings on 39% of lots, elevator-apartment buildings on 19%, and one-family classifications on 9% — a wider spread of building types than the more uniformly prewar files nearby, such as neighboring Upper East Side-Carnegie Hill or Upper East Side-Yorkville. The construction-year record backs that up: 76% of buildings predate 1940, but 12% date to the 1945-to-1975 postwar boom and a further 6% have gone up since 2000, giving the neighborhood a more layered construction history across eras than a single-era file would show. A historic district designation covers just 6% of lots, well below several neighboring Upper East Side files. That layered history — prewar core, postwar infill, and a smaller wave of twenty-first-century construction — gives the neighborhood one of the more varied building-class files among the Upper East Side neighborhoods covered here.

Height and capacity records show a median building of 5 stories, with 22% of the recorded stock rising above 6 stories. Development records find 69% of lots carrying unused floor-area capacity against current district allowances, with a median residual of 1.2 FAR points — among the larger residual gaps recorded in this stretch of Manhattan, suggesting meaningful room to add floor area under current rules across a wide share of parcels. Lot sizes run to a median of 2,554 square feet, with the largest recorded lots reaching 17,880 square feet. Combined with the neighborhood's overall scale, that headroom points to a large stock of parcels where recorded floor area still trails what current rules would allow.

Flood mapping places 4% of the neighborhood's lots inside the federally mapped floodplain, a figure that reflects current federal mapping rather than a site-specific claim about any one parcel or building. Records for individual lots — floor area, building class, and zoning capacity across the neighborhood's roughly 1,400 parcels — are available through PearlAudit's property lookups, drawn from the same tax-lot file summarized above. Between its scale, mixed-use land pattern, and recorded development headroom, Lenox Hill-Roosevelt Island's file describes one of the more varied land-use profiles among the Upper East Side neighborhoods covered here.