Zone Density
per acre		 Units
per acre		 Platted Decades
Built Up		 Primary Housing Type Neighborhood
tract 69, blockgroup 275.9235.218391840 — 1970apartments above retailBoerum Hill
tract 1058, blockgroup 156.1825.5719601962 — 1975high-rise apartmentsEast New York
tract 539, blockgroup 2200.6047.218391970 — 1975five story apartmentsWilliamsburg