Brooklyn Typology: blockgroups by decade platted

Zone	Density per acre	Units per acre	Platted	Decades Built Up	Primary Housing Type	Neighborhood
tract 134, blockgroup 3	82.03	35.87	1880	1890 — 1910	single family attached	Bay Ridge
tract 162, blockgroup 2	62.68	35.5	1880	1870 — 1950	single family attached	Bay Ridge
tract 238, blockgroup 1	100.29	32.89	1880	1880 — 1920	two to four flats	Borough Park
tract 284, blockgroup 3	87.25	31.81	1880	1880 — 1910	two to four flats	Bath Beach
tract 296, blockgroup 1	98.93	43.47	1880	1890 — 1940	two to four flats	Gravesend
tract 984, blockgroup 1	71.73	23.54	1880	1950 — 1955	single family attached	Canarsie
tract 988, blockgroup 2	92.18	30.03	1880	1870 — 1950	single family attached	Canarsie
tract 992, blockgroup 1	52.47	18.35	1880	1860 — 1920	single family detached	Canarsie
tract 1194, blockgroup 3	74.18	26.16	1880	1890 — 2000	two to four flats	East New York

Brooklyn Typology