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 493, blockgroup 2165.7455.8918401840 — 1910apartments above retailWilliamsburg
tract 505, blockgroup 2117.7337.5818401840 — 1910two to four flatsWilliamsburg
tract 69, blockgroup 277.2235.218391840 — 1970apartments above retailBoerum Hill
tract 77, blockgroup 164.5835.3518391840 — 1980single family attachedGowanus