421 51 Street
Brooklyn, NY 11220BBL 3-00791-0069Map
Owner of record: Diaz, Jairo J
421 51 Street is a two-family home built in 1901 in Brooklyn, 11220. It has 2 residential units across 2 floors. The owner of record is Diaz, Jairo J. HPD has recorded 90 housing violations here, most recently on May 1, 2026. 21 of the 50 most recent violations are still open.
- HPD violations
- 90
- DOB violations
- 11
- ECB violations
- 10
- HPD complaints
- 45
What to know
Immediately hazardous issues among recent violations are still open.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
No rent-stabilized units in 2018–2024 tax bills
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 90
- ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
May 1, 2026
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 27, 2024
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Apr 8, 2024
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 21, 2023
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Mar 20, 2023
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Feb 22, 2022
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Apr 6, 2021
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 16, 2017
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 2, 2016
Closed — Violation dismissed - CImmediately hazardous
Remove the illegal fastening double cylinder lock at metal gate at front court
Mar 5, 2016
Open — Nov sent out
Show 40 more ↓
- BHazardous
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 north
Feb 16, 2016 · Apt 3A
Open — Nov sent out - BHazardous
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 north
Feb 16, 2016 · Apt 3A
Open — Nov sent out - BHazardous
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 story
Dec 1, 2015
Open — Nov sent out - CImmediately hazardous
Provide hot water at all hot water fixtures in the room located at b-room 3a, 2nd story, 1st b-room from south at west
Dec 1, 2015 · Apt 3A
Closed — Violation dismissed - CImmediately hazardous
Provide an adequate supply of heat from an approved central heating system, or an approved system of gas or electrical heating in good operating condition for the dwelling unit in the room located at b-room 3a, 2nd story, 1st b-room from south at west
Dec 1, 2015 · Apt 3A
Closed — Violation dismissed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 3a, 2nd story, 1st apartment from south at west
Nov 20, 2015 · Apt 3A
Closed — Violation dismissed - ANon-hazardous
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 story
Sep 21, 2015
Open — Nov sent out - ANon-hazardous
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 story
Sep 21, 2015
Open — Nov sent out - CImmediately hazardous
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 story
Sep 21, 2015
Open — Nov sent out - ANon-hazardous
§ 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 story
Sep 21, 2015
Open — Nov sent out - ANon-hazardous
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 story
Sep 21, 2015
Open — Nov sent out - BHazardous
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 west
Sep 21, 2015 · Apt 3A
Open — Nov sent out - CImmediately hazardous
Provide hot water at all hot water fixtures in the room located at b-room 3a, 1st story, 1st b-room from south at west
Sep 21, 2015 · Apt 3A
Closed — Violation dismissed - BHazardous
Provide a piece of garden hose 10 feet in length with female coupling and a 10 quart pail on premises to test sprinkler system.
Sep 9, 2015
Open — Nov sent out - CImmediately hazardous
Properly repair the broken or defective sprinkler system at building
Jul 13, 2015
Open — Nov sent out - CImmediately hazardous
Provide fire watch until futher notice for entire building
Jul 13, 2015
Closed — Violation closed - BHazardous
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 west
Jul 9, 2015 · Apt 3A
Open — Nov sent out - BHazardous
Repair or replace the smoke detector missing located at apt 3a, 2nd story, 1st apartment from south at west
Jul 9, 2015 · Apt 3A
Open — Nov sent out - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 3a, 2nd story, 1st apartment from south at west
Jul 9, 2015 · Apt 3A
Closed — Violation dismissed - CImmediately hazardous
Provide an adequate supply of heat from an approved central heating system, or an approved system of gas or electrical heating in good operating condition for the dwelling unit in the entire apartment located at apt 1, 1st story, 1st apartment from south at west
Apr 23, 2015 · Apt 1
Closed — Violation dismissed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 1, 1st story, 1st apartment from south at west
Apr 23, 2015 · Apt 1
Closed — Violation dismissed - BHazardous
Repair or replace the smoke detector missing in the entire apartment located at bsmt-apt 1
Mar 11, 2015 · Apt 1
Open — Nov sent out - ANon-hazardous
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 story
Mar 11, 2015
Open — Nov sent out - CImmediately hazardous
Provide an adequate supply of heat from an approved central heating system, or an approved system of gas or electrical heating in good operating condition for the dwelling unit in the entire apartment located at bsmt-apt 1
Mar 11, 2015 · Apt 1
Closed — Violation dismissed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at bsmt-apt 1
Mar 11, 2015 · Apt 1
Closed — Violation dismissed - BHazardous
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 1
Mar 11, 2015 · Apt 1
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Feb 6, 2015
Closed — Violation dismissed - CImmediately hazardous
Provide an adequate supply of heat from an approved central heating system, or an approved system of gas or electrical heating in good operating condition for the dwelling unit in the entire apartment located at apt 3, 2nd story
Feb 1, 2015 · Apt 3
Closed — Violation dismissed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 3, 2nd story
Feb 1, 2015 · Apt 3
Closed — Violation closed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 1
Dec 9, 2014 · Apt 1
Closed — Violation dismissed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 2, 2nd story
Dec 9, 2014 · Apt 2
Closed — Violation dismissed - CImmediately hazardous
Provide an adequate supply of water for the wet sprinkler and/or standpipe system at ....
Dec 9, 2014
Closed — Violation closed - BHazardous
Repair or replace the smoke detector missing located at b-room 3a, 2nd story
Nov 22, 2014 · Apt 3A
Open — Nov sent out - BHazardous
Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. located at b-room 3a, 2nd story
Nov 22, 2014 · Apt 3A
Open — Nov sent out - CImmediately hazardous
Replace with new the broken or defective painted 2 sprinkler heads in the 2nd room from north located at b-room 3a, 2nd story, 1st b-room from south at west
Nov 22, 2014 · Apt 3A
Closed — Violation closed - CImmediately hazardous
Replace with new the broken or defective painted 4 sprinkler heads at public hall at basement
Nov 22, 2014
Closed — Violation closed - CImmediately hazardous
Replace with new the broken or defective painted 1 sprinkler head at basement apt in the entire apartment located at bsmt-apt 1, 1st bsmt-apt from south at west
Nov 22, 2014 · Apt 1
Closed — Violation closed - CImmediately hazardous
Replace with new the missing scuttle iron ladder at public hall, 2nd story
Nov 22, 2014
Closed — Violation closed - BHazardous
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 story
Nov 22, 2014
Open — Nov sent out - BHazardous
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 cellar
Nov 22, 2014
Open — Nov sent out
DOB building violations · 11
- Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Mar 6, 2019
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Mar 6, 2019
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Apr 8, 2015
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Feb 25, 2015
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Feb 25, 2015
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Feb 11, 2015
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 10, 1997
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 29, 1995
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jun 1, 1994
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 16, 1993
Dob violation - active
Show 1 more ↓
- Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jun 1, 1993
Dob violation - dismissed
ECB violations · 10
- Class - 1
Filed a certificate,form application etc, containing a material false statements.i observed as per dob records above respondent e-filed a sprinkler permit laa #340224894 while violations existing on propert
Nov 15, 2018
Resolve - Class - 1
Unlawfully continued work while on notice of a stop work order. i observed as per dob records and observed on sprinkler system in building newly installed sprinkler heads replaced throughout building and
Nov 15, 2018
Resolve - Class - 2
Failure to comply with the commissioners order contained in summons/violation #35303845h issued on 05/10118 and to file a certificate of correction pursuant to 28-201.1 and 1rcny 102-01.working while on a stop
Jun 14, 2018 · Penalty $625
Resolve - Class - 1
Unlawfully continued work while on notice of a stop work order at timeof inspection two male workers at premiss doing framing contrary to stop work orders #35301200p, 35115005r and 35115006z. rmdy: comply with
May 1, 2018 · Penalty $12,500
Resolve - Class - 1
Work w/o permit. at time of inspection observed from back of house worker in top floor changing window frame. worker denied access to inspect site from inside. no permit in dob records. full stop work order iss
Jan 13, 2018
Resolve - Class - 1
Work w/o a permit observed on 01/28/15 @ 12:25pm.new spinkler heads replaced on 1st & 2nd fl.also defective system missing sprinkler head parts.1st & 2nd fl.stop all work entire bldg.rem:obtain a permit or rest
Jan 18, 2015 · Penalty $8,000
Resolve - Class - 2
Failure to maintain bldg in code compliant manner:no fire stopping perbc 712.3;27-345.observed on 01/18/15 of 12:30pm in bsmt boiler room-missing fire stopping materials for boiler room pipe pentrations.rem:pro
Jan 18, 2015 · Penalty $2,500
Resolve - Class - 1
Bc903 & nfpa 13 chapter 8. sprinkler system not in accordance with code. at ground floor basement sprinkler heads are not in operation. element at center of sprinkler heads are missing. at ht etwo upper flr
Nov 24, 2014 · Penalty $8,000
Resolve - Class - 1
Bc903.3.5 & nfpa 13, ch. 15. insufficient source of water supply for sprinkler system. dedicated sprinkler main for sprinkler system is 2" pipe.the number of sprinkler heads is over 10 sprinkler heads.2"pipe
Nov 24, 2014 · Penalty $8,000
Resolve - Class - 1
Failur to maintain bldg in a code compliant manner.noted:@ time of insp.the os & y valve was shut off and locked in closed position for bldg sprinkler system.rem:repair/replace and maintain sprinkler system val
Nov 22, 2014 · Penalty $5,000
Resolve
Complaints
- Door/window
Door
Feb 29, 2016 · Apt 3A
Close - Electric
No lighting
Feb 18, 2016 · Apt 1
Close - Safety
Smoke detector
Feb 18, 2016 · Apt 1
Close - Safety
Carbon monoxide detector
Feb 18, 2016 · Apt 1
Close - Safety
Smoke detector
Feb 18, 2016 · Apt 3A
Close - Safety
Carbon monoxide detector
Feb 18, 2016 · Apt 3A
Close - Unsanitary condition
Pests
Feb 18, 2016 · Apt 3A
Close - Heat/hot water
Entire building
Feb 18, 2016 · Apt 3A
Close - Heat/hot water
Entire building
Feb 13, 2016 · Apt 3A
Close - Heat/hot water
Entire building
Nov 27, 2015 · Apt 3A
Close
Show 35 more ↓
- Heat/hot water
Entire building
Nov 19, 2015 · Apt 3A
Close - Heat/hot water
Entire building
Sep 18, 2015 · Apt 3A
Close - Safety
Carbon monoxide detector
Sep 1, 2015 · Apt 3A
Close - Safety
Smoke detector
Sep 1, 2015 · Apt 3A
Close - Safety
Carbon monoxide detector
Sep 1, 2015 · Apt 1
Close - Safety
Smoke detector
Sep 1, 2015 · Apt 1
Close - Heat/hot water
Entire building
Jul 6, 2015 · Apt 3A
Close - Safety
Carbon monoxide detector
May 27, 2015 · Apt 3A
Close - Safety
Smoke detector
May 27, 2015 · Apt 3A
Close - Heat/hot water
Entire building
Apr 27, 2015 · Apt 3A
Close - Heat/hot water
Entire building
Apr 21, 2015 · Apt 1
Close - Heat/hot water
Entire building
Mar 5, 2015 · Apt 1
Close - Heat/hot water
Entire building
Feb 28, 2015 · Apt 1
Close - Heat/hot water
Apartment only
Feb 6, 2015 · Apt 3A
Close - Plumbing
Boiler
Feb 4, 2015 · Apt 1
Close - Heat/hot water
Entire building
Jan 30, 2015 · Apt 1
Close - Heat/hot water
Entire building
Jan 26, 2015 · Apt BLDG
Close - Heat/hot water
Apartment only
Dec 9, 2014 · Apt 1
Close - Heat/hot water
Entire building
Dec 3, 2014 · Apt BLDG
Close - Heat/hot water
Entire building
Nov 24, 2014 · Apt BLDG
Close - Heat/hot water
Entire building
Nov 24, 2014 · Apt BLDG
Close - Heat/hot water
Entire building
Nov 21, 2014 · Apt 3A
Close - Heat/hot water
Entire building
Nov 21, 2014 · Apt 3A
Close - Heat/hot water
Entire building
Nov 19, 2014 · Apt 3A
Close - Heat/hot water
Entire building
Nov 18, 2014 · Apt BLDG
Close - Heat/hot water
Entire building
Nov 16, 2014 · Apt 3A
Close - Heat/hot water
Entire building
Nov 16, 2014 · Apt 3A
Close - Heat/hot water
Entire building
Aug 1, 2014 · Apt BLDG
Close - Heat/hot water
Entire building
Jul 29, 2014 · Apt 3FL
Close - Heat/hot water
Entire building
Jul 29, 2014 · Apt 3FL
Close - Heat/hot water
Entire building
Jul 21, 2014 · Apt BLDG
Close - Heat/hot water
Entire building
Jul 15, 2014 · Apt BLDG
Close - Nonconst
Illegal
May 26, 2005 · Apt 1FLR
Close - General
Ceramic-tile
Apr 13, 2005 · Apt 1
Close - General
Floor
Apr 13, 2005 · Apt 1
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Two-family home (B9)
- Year built
- 1901
- Floors
- 2
- Residential units
- 2
- Building area
- 2,592 ft²
- Lot area
- 2,003 ft²
- Zoning
- R6B
- Community board
- 307
- Council district
- 38
- Block / lot
- 791 / 69
- Assessed value
- $90,060
- Landmark / historic district
- No
HPD registration #370733, last renewed Aug 12, 2025.
Questions about 421 51 Street
Who owns 421 51 Street?
The owner of record in NYC Department of City Planning PLUTO data is Diaz, Jairo J.
Does 421 51 Street have violations?
Yes. NYC HPD has recorded 90 housing violations at this property.
Is 421 51 Street rent stabilized?
No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.
When was 421 51 Street built?
City records list 1901 as the year it was built.
How many apartments are in 421 51 Street?
It has 2 residential units.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.