Zone Density
per acre		 Units
per acre		 Platted Decades
Built Up		 Primary Housing Type Neighborhood
tract 75, blockgroup 345.4421.5218391840 — 1880single family attachedGowanus
tract 153, blockgroup 292.7046.1518391860 — 1880single family attachedPark Slope
tract 533, blockgroup 1182.8141.7418391860 — 1880two to four flatsWilliamsburg