Worst buildings in Flatlands, Brooklyn

5407 Avenue O has the most open HPD violations per 10 units of any graded rental building with 6 or more units in Flatlands: 225.6 per 10 units, 203 open in all, 26 of them class C.

Graded rental buildings with 6 or more units, ranked by open NYC HPD housing code violations per 10 units, the same rule as the citywide list. Co-ops, condos and public housing (NYCHA) are left out. Only buildings with an HPD violation issued in the last 24 months or a 311 housing complaint in the last 12 are listed. Class C means immediately hazardous. Records as of Oct 26, 2026.

#AddressUnitsOpen per 10 unitsOpen violationsGradeOwner
15407 Avenue O9225.6203 (26 class C)FIndividual owner
21960 East 46th Street22183.6404 (104 class C)FTOJU REALTY CORP
31155 East 35th Street38155.8592 (197 class C)FMIDWOOD 35TH REALTY LLC
41235 East 35th Street693.356 (10 class C)DAVKAR REALITY LLC
55409 Avenue O1277.593 (16 class C)F5409 HOLDINGS LLC
619 Hubbard Place1664.4103 (61 class C)D19 HUBBARD PLACE LLC
71193 East 40th Street648.329 (4 class C)DNot on file
82389 Nostrand Avenue2447.5114 (57 class C)F2389 NOSTRAND LLC
91075 East 35th Street1642.568 (43 class C)FBESEYATA DISHMAYA LLC
101791 New York Avenue1537.356 (28 class C)DNEW YORK 1791 PARTNERS LLC
111240 East 38th Street2836.8103 (22 class C)F1240 EAST 38 STREET CORP
124200 Avenue K10833356 (82 class C)F4200 AVENUE K EQUITIES LLC
131783 New York Avenue1230.837 (17 class C)FLOUDAL REALTY INC
141757 Brooklyn Avenue83024 (2 class C)FNot on file
151239 East 35th Street63018 (1 class C)D1239 EAST 35TH STREET CO LLC
164211 Avenue K7323.7173 (40 class C)F4200 AVE K EQUITIES LLC
171141 East 35th Street1316.221 (0 class C)DCARMICHAEL REALTY CORP
181814 Brooklyn Avenue1613.822 (5 class C)DMSL ESTATES LLC
193210 Avenue H7812.497 (35 class C)FKMW REALTY, LLC
203801 Avenue L3112.338 (13 class C)F3801 AVENUE L REALTY LLC
215221 Flatlands Avenue2411.728 (3 class C)DLIN FLATS REALTY LLC
223614 Avenue K3811.644 (16 class C)FADOR REALTY LLC
231022 East 36th Street5111.458 (17 class C)FHALF STEP 36 LLC
241487 East 37th Street4110.543 (15 class C)FMGH REALTY INC
253728 Avenue K581058 (35 class C)D3728 AVENUE K PROPERTIES LLC
263401 Avenue J598.852 (24 class C)FCRESCENT NINE ASSOCIATES
271830 Brooklyn Avenue568.849 (8 class C)CRIFATI LLC
282021 East 41st Street487.134 (7 class C)F2021 EAST 41ST STREET CO LLC
291789 Flatbush Avenue136.99 (0 class C)F1789 FLATBUSH AVENUE LLC
301149 East 35th Street746.951 (6 class C)D1145 EAST 35TH STREET CO, LLC
313857 Kings Highway83650 (22 class C)D3857 MANAGEMENT LLC
323319 Kings Highway725.439 (10 class C)D3319 PROPERTY LLC
333405 Kings Highway48524 (2 class C)CJ&D II REALTY LLC
344011 Kings Highway964.947 (20 class C)D4011 Realty LLC
353900 Kings Highway844.538 (25 class C)D3900 KINGS HIGHWAY CO LLC
362425 Nostrand Avenue1783.868 (38 class C)F2425 NOSTRAND AVENUE CO LLC
371057 East 34th Street83.83 (0 class C)A1057 E 34 LLC
38East 55th Street83.83 (1 class C)B829 EAST 55TH ST LLC
395407 Kings Highway2253.579 (26 class C)DCLARENDON GARDENS LLC
403906 Avenue K242.97 (1 class C)C3906 ARM REALTY LLC
412401 Nostrand Avenue432.310 (6 class C)D2401 NOSTRAND AVENUE CO LLC
423715 Kings Highway662.114 (6 class C)CBRG 3715 LLC
434149 Kings Highway1011.919 (13 class C)C4149 REALTY, LLC
441114 East 35th Street61.71 (0 class C)AIndividual owner
451602 East 43rd Street191.63 (0 class C)B1602 REALTY LLC
463601 Avenue J4214 (0 class C)D3601 AVE J INC
471682 Flatbush Avenue120.81 (1 class C)ALOUDAL REALTY INC
483402 Avenue I370.83 (2 class C)C3402 REALTY LLC
493502 Kings Highway840.11 (1 class C)B3502 KINGS HIGHWAY CO LLC

The full list for Flatlands, up to 100 buildings. Each row is the record, not a verdict.

More for Flatlands: rent-stabilized buildings, best buildings, heat complaints, and the Flatlands page.

Sources: NYC HPD housing maintenance code violations, HPD property registrations and housing litigation, 311 service requests, DOB violations, NYC Marshals evictions, and HPD bedbug filings from NYC Open Data, plus rent-stabilized unit counts from NYC Department of Finance tax bills. How grades work.