Brooklyn · Block 791 · Lot 69 · 11220

421 51 Street

2 floors · 2 apartments · 2,592 sq ft · built 1901 · class B9 · owner of record: Diaz, Jairo J

55open violations
$0ECB/OATH penalties owed
5HPD class C (immediately hazardous)
Overdueto Annual property registration

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New violations the morning after they're issued, plus deadline reminders. Free for one building.

Compliance deadlines

RequirementDueStatus
Annual property registration Check
HPD registration · September 1 each year
What this is

Residential buildings with three or more units, and one- and two-family homes the owner doesn't occupy, register with HPD every year ($13 fee). An unregistered building can't start a nonpayment case in Housing Court and faces civil penalties. Agency page

OverdueRegistration expired 2026-09-01

Open violations

ECB / OATH (0)

None open.

DOB (1)
IssuedViolationStatus
Aug 16, 1993LOCAL LAW 62/91 - BOILERS

#34232
DOB VIOLATION - ACTIVE
DOB NOW Safety (0)

None open.

HPD (54) · C 5 · B 33 · A 16
IssuedClassViolationCorrect by
Mar 7, 2016C§ 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING DOUBLE CYLINDER LOCK AT METAL GATE AT FRONT COURTMar 15, 2016
Feb 18, 2016BApt 3A · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ROOM LOCATED AT B-ROOM 3A, 2nd STORY, 3rd B-ROOM FROM WEST AT NORTHMar 24, 2016
Feb 18, 2016BApt 3A · § 27-2045, 2046 ADM CODE PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS MISSING IN THE ROOM LOCATED AT B-ROOM 3A, 2nd STORY, 3rd B-ROOM FROM WEST AT NORTHMar 24, 2016
Dec 2, 2015B§ 27-2050 ADM CODE PROVIDE A PIECE OF GARDEN HOSE 10 FEET IN LENGTH WITH FEMALE COUPLING AND A 10 QUART PAIL ON PREMISES TO TEST SPRINKLER SYSTEM. AT PUBLIC HALL, 2nd STORYJan 6, 2016
Sep 23, 2015BApt 3A · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ROOM LOCATED AT B-ROOM 3A, 2nd STORY, 1st B-ROOM FROM SOUTH AT WESTOct 28, 2015
Sep 23, 2015A§ 27-2045 ADM CODE POST A PROPER NOTICE OF SMOKE DETECTOR REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, AT OR NEAR THE MAIL BOX .. AT PUBLIC HALL, 1st STORYDec 27, 2015
Sep 23, 2015C§ 27-2033 ADM CODE POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDINGS HEATING SYSTEM AT BOILER ROOM DOOR AND AT PUBLIC HALL, 1st STORYOct 1, 2015
Sep 23, 2015A§ 27-2046.1 HMC: POST A PROPER NOTICE OF CARBON MONOXIDE DETECTING DEVICE REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, IN A COMMON AREA OF A CLASS A MULTIPLE DWELLING NEAR INSPECTION CERTIFICATE OR PROVIDE NOTICE TO TENANTS IN A PRIVATE DWELLING. AT PUBLIC HALL, 1st STORYDec 27, 2015
Sep 23, 2015A§ 26-1103 ADMIN. CODE: POST AND MAINTAIN A PROPER NOTICE ON WALL OF THE ENTRANCE STORY IN ENGLISH AND SPANISH ON THE AVAILABILITY OF THE AGENCYS HOUSING INFORMATION GUIDE. A SAMPLE NOTICE CAN BE FOUND AT WWW.NYC.GOV/HPD. AT PUBLIC HALL, 1st STORYDec 27, 2015
Sep 23, 2015A§ 329, M/D LAW AND DEPT. RULES AND REGS. PROVIDE A COMPLETED CERTIFICATE OF INSPECTION VISITS IN A PROPER FRAME AT OR NEAR MAILBOXES, BOTTOM EDGE OF FRAME BETWEEN 48-62 INCHES ABOVE FLOOR .. AT PUBLIC HALL, 1st STORYDec 27, 2015
Sep 14, 2015B§ 27-2050 ADM CODE PROVIDE A PIECE OF GARDEN HOSE 10 FEET IN LENGTH WITH FEMALE COUPLING AND A 10 QUART PAIL ON PREMISES TO TEST SPRINKLER SYSTEM.Oct 19, 2015
Jul 14, 2015C§ 27-2005 ADM CODE PROPERLY REPAIR THE BROKEN OR DEFECTIVE SPRINKLER SYSTEM AT BUILDINGJul 22, 2015
Jul 13, 2015BApt 3A · § 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR MISSING LOCATED AT APT 3A, 2nd STORY, 1st APARTMENT FROM SOUTH AT WESTAug 17, 2015
Jul 13, 2015BApt 3A · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. LOCATED AT APT 3A, 2nd STORY, 1st APARTMENT FROM SOUTH AT WESTAug 17, 2015
Mar 13, 2015BApt 1 · § 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR MISSING IN THE ENTIRE APARTMENT LOCATED AT BSMT-APT 1Apr 17, 2015
Mar 13, 2015BApt 1 · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ENTIRE APARTMENT LOCATED AT BSMT-APT 1Apr 17, 2015
Mar 13, 2015A§ 26-1103 ADMIN. CODE: POST AND MAINTAIN A PROPER NOTICE ON WALL OF THE ENTRANCE STORY IN ENGLISH AND SPANISH ON THE AVAILABILITY OF THE AGENCYS HOUSING INFORMATION GUIDE. A SAMPLE NOTICE CAN BE FOUND AT WWW.NYC.GOV/HPD. AT PUBLIC HALL, 1st STORYJun 16, 2015
Nov 24, 2014B§ 27-2050 ADM CODE PROVIDE 3 EXTRA SPRINKLER HEADS AND SUITABLE WRENCH FOR EMERGENCY PURPOSES AT O.S.Y. VALVE OF SPRINKLER IN ACCORDANCE WITH THE RULES AND REGULATIONS OF THIS DEPARTMENT SOUTH WALL FRONT AT CELLARDec 29, 2014
Nov 24, 2014BApt 3A · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. LOCATED AT B-ROOM 3A, 2nd STORYDec 29, 2014
Nov 24, 2014B§ 27-2050 ADM CODE PROVIDE A PIECE OF GARDEN HOSE 10 FEET IN LENGTH WITH FEMALE COUPLING AND A 10 QUART PAIL ON PREMISES TO TEST SPRINKLER SYSTEM. AT PUBLIC HALL, 2nd STORYDec 29, 2014
Nov 24, 2014B§ 27-2050 ADM CODE SEAL IN OPEN POSITION THE O.S.Y. VALVE OF THE SPRINKLER SYSTEM IN ACCORDANCE WITH THE RULES AND REGULATIONS OF THIS DEPARTMENT AT SOUTH WALL FRONT CELLARDec 29, 2014
Nov 24, 2014A§ 27-2050 ADM CODE MAINTAIN ON THE PREMISES A COPY OF THE SPRINKLER TEST FOR THE CURRENT YEAR.Feb 27, 2015
Nov 24, 2014BApt 3A · § 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR MISSING LOCATED AT B-ROOM 3A, 2nd STORYDec 29, 2014
Aug 4, 2014BApt 3B · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. LOCATED AT B-ROOM 3B, 2nd STORY, 2nd B-ROOM FROM WEST AT NORTHSep 8, 2014
Aug 4, 2014BApt 3A · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. LOCATED AT B-ROOM 3A, 2nd STORY, 1st B-ROOM FROM WEST AT NORTHSep 8, 2014
Aug 4, 2014BApt 3B · § 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR ; THE MISSING LOCATED AT B-ROOM 3B, 2nd STORY, 2nd B-ROOM FROM WEST AT NORTHSep 8, 2014
Aug 4, 2014C§ 27-2033 ADM CODE PROVIDE READY ACCESS TO BUILDINGS HEATING SYSTEM .. AT PUBLIC HALL, 1st STORYAug 12, 2014
Aug 4, 2014BApt 3A · § 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR ; MISSING LOCATED AT B-ROOM 3A, 2nd STORY, 1st B-ROOM FROM WEST AT NORTHSep 8, 2014
Aug 4, 2014C§ 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING ; THE DOUBLE CYLINDER LOCK AT GATE IN FRONT OF BUILDINGAug 12, 2014
Jul 28, 2006AD26-10.01 ADM CODE REPLACE WITH NEW THE MISSING 50 WATT LIGHT WALL FIXTURE ENTRANCE TO BLDG.Nov 24, 2006
Jul 28, 2006AD26-12.01 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT WALLS 2 STY PUBLIC HALL BATHROOM.Nov 24, 2006
Jul 28, 2006AD26-31.09 ADM CODE PROVIDE UNDER COMPLETED PERMIT SANITARY FACILITIES FOR EACH 6 PERSONS OR REMAINDER THEREOF FOR CLASS B ROOMS BY INSTALLING ONE WASH BASIN 1 BATHTUB OR SHOWER AT 1ST STY.Nov 24, 2006
Jul 28, 2006AD26-31.09 ADM CODE PROVIDE AT LEAST ONE WATER CLOSET ON THE SAME FLOOR FOR THE ROOMS USED FOR CLASS B OCCUPANCY. WORK MUST BE COMPLETED UNDER PERMIT AT 1ST STY.Nov 24, 2006
Jul 28, 2006AD26-10.01 ADM CODE REPLACE WITH NEW THE MISSING DOOR AT BOTTOM OF STAIR ENCLOSURE IN CELLAR.Nov 24, 2006
Jul 28, 2006AD26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE FIRE RETARDED PLASTER BOARD CEILING CELLAR.Nov 24, 2006
Jul 28, 2006AD26-21.07 ADM CODE MAINTAIN ON THE PREMISES A COPY OF THE SPRINKLER TES T FOR THE CURRENT YEAR.Nov 24, 2006
Jul 28, 2006AD26-10.01 ADM CODE REPLACE WITH NEW THE MISSING WALL FIXTURE 2 STY PUBLIC HALL BATHROOM.Nov 24, 2006
Jul 28, 2006AD26-33.03 ADM CODE POST A SIGN IN ROOMING UNIT SHOWING MAXIMUM LAWFUL OCCUPANCY FOR SLEEPING PURPOSES BASEMENT 1 STY 2 STY B ROOMS.Nov 24, 2006
Jul 28, 2006A§ 329, M/D LAW AND DEPT. RULES AND REGS. PROVIDE A COMPLETED CERTIFICATE OF INSPECTION VISITS IN A PROPER FRAME READILY ACCESSIBLE FOR SIGNATURE, BOTTOM EDGE OF FRAME BETWEEN 48-62 INCHES ABOVE FLOOR AT FRAME MISSING 1 STY PUB HALL.Nov 24, 2006
Jun 8, 2005BApt 1 · § 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ENTIRE APARTMENT LOCATED AT APT 1, 1st APARTMENT FROM SOUTH AT WESTJul 18, 2005
Jun 7, 2005BApt 1 · § 27-2005 ADM CODE PROPERLY REPAIR THE BROKEN OR DEFECTIVE CEILING LIGHT FIXTURE IN THE BATHROOM LOCATED AT APT 1, 1st APARTMENT FROM SOUTH AT WESTJul 17, 2005
Jun 7, 2005BApt 1 · § 27-2005 ADM CODE PROPERLY SECURE THE LOOSE BATHTUB IN THE BATHROOM LOCATED AT APT 1, 1st APARTMENT FROM SOUTH AT WESTJul 17, 2005
Jun 7, 2005BApt 1 · § 27-2026 ADM CODE REPAIR THE LEAKY AND/OR DEFECTIVE FAUCETS AT BATHTUB IN THE BATHROOM LOCATED AT APT 1, 1st APARTMENT FROM SOUTH AT WESTJul 17, 2005
Jun 7, 2005BApt 1 · § 27-2005 ADM CODE REPLACE WITH NEW THE MISSING CERAMIC TILES AROUND TUB AREA AND FLOOR IN THE BATHROOM LOCATED AT APT 1, 1st APARTMENT FROM SOUTH AT WESTJul 17, 2005
Jun 7, 2005BApt 1 · § 27-2005 ADM CODE REPLACE WITH NEW THE MISSING DOOR LOCKS AT EAST AND WEST DOORS IN THE BATHROOM LOCATED AT APT 1, 1st APARTMENT FROM SOUTH AT WESTJul 17, 2005
Jun 6, 2005BApt 1FLR · § 27-2070 ADM CODE DISCONTINUE UNLAWFUL COOKING SPACE OR FILE PLANS AND APPLICATION WITH THIS DEPARTMENT TO LEGALIZE SAME, IF LAWFULLY FEASIBLE, .. IN THE 2nd ROOM FROM NORTH AT WEST LOCATED AT APT 1FLR, 2nd STORY, APARTMENT AT WESTJul 16, 2005
Mar 10, 1987BD26-19.07 ADM CODE PROVIDE ADEQUATE LIGHTING AT OR NEAR THE OUTSIDE OF THE FRONT ENTRANCEWAY OF THE BUILDING AND KEEP SAME BURNING FROM SUNSET EVERY DAY TO SUNRISE ON THE DAY FOLLOWING 50 WATTS NIGHT INSPECTION.Apr 27, 1987
Jul 23, 1979BD26-19.05 ADM CODE PROVIDE ADEQUATE LIGHT OF NOT LESS THAN 60 WATTS INCANDESCENT OR EQUIVALENT ILLUMINATION VESTIBULE 2 STY PUB HALL.Sep 9, 1979
Dec 7, 1974BD26-10.01 ADM CODE REPLACE WITH NEW THE BROKEN OR DEFECTIVE AND OR PAINTED SPRINKLER HEAD KITCHEN 2 STY FRONT SOUTH ROOM #7.Feb 3, 1975
Dec 7, 1974BD26-10.01 ADM CODE REPLACE WITH NEW THE BROKEN OR DEFECTIVE AND OR PAINTED SPRINKLER HEAD 1 TO 2ND STY PUBLIC HALL STAIRS.Feb 3, 1975
Dec 7, 1974BD26-10.01 ADM CODE ABATE THE NUISANCE CONSISTING OF SPRINKLER HEADS CLOSE TO CEILING 2 STY FRONT SOUTH ROOM #7 KITCHEN AND FRONT ROOM.Feb 3, 1975
Dec 7, 1974BD26-10.01 ADM CODE REPLACE WITH NEW THE BROKEN OR DEFECTIVE AND OR PAINTED SPRINKLER HEAD 2 STY FRONT EAST ROOM #6.Feb 3, 1975
Apr 12, 1973BD26-21.07 ADM CODE PROVIDE 3 EXTRA SPRINKLER HEADS AND SUITABLE WRENCH FOR EMERGENCY PURPOSES AT O.S.Y. VALVE OF SPRINKLER IN ACCORDANCE WITH THE RULES AND REGULATIONS OF THIS DEPARTMENT CELLAR FRONT.Jun 18, 1975
Aug 18, 1967BD26-19.05 ADM CODE PROVIDE ADEQUATE LIGHT OF NOT LESS THAN 60 WATTS OR EQUIVALENT ILLUMINATION AT FRONT VESTIBULE.Jun 18, 1975

Check the agency records

Always confirm on the city's own systems before acting: DOB BIS property profile · DOB NOW · HPD Online · Pay ECB/OATH penalties (CityPay)

City records as of Oct 25, 2026, 5:04 PM ET. BBL 3007910069.

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