Carroll Gardens-Cobble Hill-Gowanus-Red Hook, Brooklyn

No neighborhood in this batch carries a larger mapped flood share than Carroll Gardens-Cobble Hill-Gowanus-Red Hook: 13% of its roughly 7,300 tax lots sit inside the federal flood zone on current maps. That is a statement about regulatory coverage along its waterfront edges, not a claim about what has or hasn't flooded — but it sets this neighborhood apart from most of its low-lying inland neighbors in this data set, including Park Slope and Windsor Terrace-South Slope just to the east, whose own pages record no comparable flood-zone coverage at all.

The building stock is old and largely intact: a median construction year of 1901, with 86% of recorded buildings predating 1940 and just 3% from the 1945-to-1975 postwar boom. 17% of lots also fall within a recorded historic district — the two facts, age and protection, sitting on top of each other on much of the same ground, particularly toward Brooklyn Heights and Downtown Brooklyn-DUMBO-Boerum Hill to the north, where similarly old building stock carries its own separate historic-district figures, distinct block by block even along a shared border.

Walk-up apartment buildings lead the building-class record at 35%, with two-family homes at 19% and mixed residential-commercial buildings at 10%. Land use runs 38% multi-family walk-up and 29% one- and two-family, with 13% mixed residential-commercial, at a median height of 3 stories and 1% of buildings recorded above 6 — a denser and more mixed record than the more uniformly low-rise pages elsewhere in the borough, reflecting a mix of rowhouse blocks, mid-rise apartment buildings, and industrial-adjacent commercial strips that have grown up around the Gowanus waterway and the old Red Hook piers.

81% of lots are recorded as residential, holding a combined 39,835 units — among the largest unit totals in this set of neighborhood pages. Lot sizes run a median of 2,000 square feet, climbing to 6,000 square feet on the larger lots, and development headroom sits at 73% of lots with a median residual of 0.5 FAR, a moderate margin that sits between the widest and narrowest recorded across this batch of pages.

Exact per-lot figures — height, coverage, flood status — are available in PearlAudit's underlying records for any of these roughly 7,300 tax lots, a level of detail that matters here more than on most pages in this batch, given how much the flood, historic, and building-class facts vary block to block toward Sunset Park (West) and the waterfront.