Downtown Brooklyn-DUMBO-Boerum Hill, Brooklyn

Few Brooklyn records hold this much contrast inside one boundary. Downtown Brooklyn, DUMBO, and Boerum Hill file together as roughly 1,900 tax lots, and the numbers pull in opposite directions: a median building height of 3 stories against 10% of buildings above 6 floors, and a median lot of 2,075 square feet against a ninetieth percentile of 14,950. Even the building-class mix refuses to pick a winner — walk-up apartment buildings at 21%, two-family homes at 17%, and mixed residential-commercial buildings at 16%, with no class dominating the way one usually does in a Brooklyn neighborhood file. It is less a single pattern than three adjacent ones sharing a statistical boundary.

Age tells the quieter half of the story. 80% of recorded buildings predate 1940, and the median year built is 1910 — Boerum Hill's rowhouses and DUMBO's loft buildings both land on the prewar side of the ledger. The boom decades between 1945 and 1975 contributed just 3% of the stock, while 13% dates from 2000 or later. Land use splits nearly evenly at the top as well: 29% of parcels hold one- and two-family buildings, 29% mix residences with commercial space, and 22% are multi-family walk-ups — a downtown, a loft district, and a rowhouse neighborhood sharing one record.

Historic-district regulation is a first-class fact here: 27% of lots sit inside designated districts. That shapes how to read the capacity numbers — 69% of lots carry recorded floor area below their allowance, at a median residual of 0.4 FAR, but that figure means one thing on a large downtown parcel and something else entirely on a protected rowhouse block, where landmark review governs what the zoning arithmetic would otherwise permit. In a file this internally varied, the average is a starting point, not an answer.

Flood mapping reaches the edges: 2% of lots fall within the federal special flood hazard area, concentrated along the waterfront — a statement about regulatory boundaries, not a forecast of where water goes. The combined area is 82% residential by lot count with 32,219 housing units, and its tax-map neighbors are Brooklyn Heights, Fort Greene, Park Slope, and the Carroll Gardens-Cobble Hill-Gowanus-Red Hook district, with Lower Manhattan facing it across the river. All figures above are aggregated from NYC municipal records, lot by lot, across everything inside the boundary.