Brooklyn Typology: blockgroups by decade platted

Zone	Density per acre	Units per acre	Platted	Decades Built Up	Primary Housing Type	Neighborhood
tract 69, blockgroup 2	77.22	35.2	1839	1840 — 1970	apartments above retail	Boerum Hill
tract 75, blockgroup 3	45.44	21.52	1839	1840 — 1880	single family attached	Gowanus
tract 77, blockgroup 1	64.58	35.35	1839	1840 — 1980	single family attached	Gowanus
tract 94, blockgroup 1	118.72	37.57	1839	1900 — 1930	single family semi-detached	Sunset Park
tract 100, blockgroup 2	159.59	47.1	1839	1900 — 1930	two to four flats	Sunset Park
tract 112, blockgroup 4	195.52	59.48	1839	1900 — 1920	four story apartments	Borough Park
tract 139, blockgroup 3	103.90	45.54	1839	1860 — 1870	single family attached	Park Slope
tract 145, blockgroup 4	62.35	24.11	1839	1870 — 1900	apartments above retail	Sunset Park
tract 153, blockgroup 2	92.70	46.15	1839	1860 — 1880	single family attached	Park Slope
tract 165, blockgroup 2	114.14	57.5	1839	1870 — 1900	single family attached	Park Slope
tract 181, blockgroup 1	63.72	32.7	1839	1860 — 1890	single family attached	Fort Greene
tract 185.01, blockgroup 1	178.68	62.95	1839	1870 — 1944	five story apartments	Fort Greene
tract 224, blockgroup 4	95.95	28.76	1839	1890 — 1910	single family attached	Borough Park
tract 225, blockgroup 1	28.50	11.15	1839	1870 — 1890	two to four flats	Crown Heights
tract 227, blockgroup 1	67.11	29.24	1839	1870 — 1910	apartments above retail	Bedford-Stuyvesant
tract 229, blockgroup 4	88.02	43.44	1839	1870 — 1890	two to four flats	Bedford-Stuyvesant
tract 237, blockgroup 2	32.39	10.29	1839	1870 — 1910	two to four flats	Bedford-Stuyvesant
tract 241, blockgroup 3	37.95	17.19	1839	1900 — 2000	two to four flats	Bedford-Stuyvesant
tract 243, blockgroup 1	96.27	43.15	1839	1870 — 1890	two to four flats	Bedford-Stuyvesant
tract 253, blockgroup 3	25.72	11.36	1839	1860 — 1910	two to four flats	Bedford-Stuyvesant
tract 271.01, blockgroup 3	36.60	16.67	1839	1860 — 1890	two to four flats	Bedford-Stuyvesant
tract 277, blockgroup 4	120.70	45.02	1839	1870 — 1960	two to four flats	Bedford-Stuyvesant
tract 291, blockgroup 1	53.71	25.54	1839	1880 — 1900	two to four flats	Bedford-Stuyvesant
tract 297, blockgroup 3	74.06	37.75	1839	1870 — 1920	two to four flats	Bedford-Stuyvesant
tract 315, blockgroup 2	132.16	62.04	1839	1880 — 1900	two to four flats	Crown Heights
tract 377, blockgroup 4	83.03	36.46	1839	1880 — 1910	two to four flats	Bedford-Stuyvesant
tract 393, blockgroup 1	70.07	23.98	1839	1870 — 2000	two to four flats	Bushwick
tract 533, blockgroup 1	182.81	41.74	1839	1860 — 1880	two to four flats	Williamsburg
tract 539, blockgroup 2	196.61	47.2	1839	1970 — 1975	five story apartments	Williamsburg
tract 399, blockgroup 3	96.25	43.96	1840	1870 — 2000	two to four flats	Bushwick
tract 403, blockgroup 1	45.93	18.21	1840	1870 — 2000	two to four flats	Bushwick
tract 419, blockgroup 1	113.36	33.74	1840	1870 — 2000	two to four flats	Bushwick
tract 435, blockgroup 1	104.88	27.48	1840	1870 — 2000	apartments above retail	Bushwick
tract 447, blockgroup 2	45.06	14.16	1840	1870 — 2000	loft conversions	Bushwick
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

Brooklyn Typology

List of blockgroups platted around 1839