Brooklyn Typology: blockgroups by decade built up

Zone	Density per acre	Units per acre	Platted	Decades Built Up	Primary Housing Type	Neighborhood
tract 493, blockgroup 2	165.74	55.89	1840	1840 — 1910	apartments above retail	Williamsburg
tract 505, blockgroup 2	117.73	37.58	1840	1840 — 1910	two to four flats	Williamsburg
tract 253, blockgroup 3	25.72	11.36	1839	1860 — 1910	two to four flats	Bedford-Stuyvesant
tract 227, blockgroup 1	67.11	29.24	1839	1870 — 1910	apartments above retail	Bedford-Stuyvesant
tract 237, blockgroup 2	32.39	10.29	1839	1870 — 1910	two to four flats	Bedford-Stuyvesant
tract 284, blockgroup 3	87.25	31.81	1880	1880 — 1910	two to four flats	Bath Beach
tract 377, blockgroup 4	83.03	36.46	1839	1880 — 1910	two to four flats	Bedford-Stuyvesant
tract 804, blockgroup 2	123.43	49.79	1860	1880 — 1910	five story apartments	Prospect-Lefferts Gardens
tract 134, blockgroup 3	82.03	35.87	1880	1890 — 1910	single family attached	Bay Ridge
tract 224, blockgroup 4	95.95	28.76	1839	1890 — 1910	single family attached	Borough Park
tract 882, blockgroup 4	181.49	65.87	1870	1890 — 1910	two to four flats	Brownsville
tract 884, blockgroup 1	137.86	54.69	1870	1890 — 1910	apartments above retail	Brownsville
tract 886, blockgroup 1	117.92	44.03	1870	1890 — 1910	two to four flats	Brownsville
tract 900, blockgroup 3	90.27	31.94	1870	1890 — 1910	two to four flats	Brownsville

Brooklyn Typology