537 Knickerbocker Avenue
Brooklyn, NY 11221BBL 3-03326-0002Map
Owner of record: 1s Reo Opportunity 1, LLC
537 Knickerbocker Avenue is a walk-up apartment building built in 1905 in Brooklyn, 11221. It has 8 residential units across 4 floors. The owner of record is 1s Reo Opportunity 1, LLC. HPD has recorded 305 housing violations here, most recently on May 5, 2026. 35 of the 50 most recent violations are still open.
- HPD violations
- 305
- DOB violations
- 3
- ECB violations
- 1
- HPD complaints
- 192
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 · 305
- 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 5, 2026
Open — Nov sent out - 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.
Jun 10, 2025
Open — Nov sent out - CImmediately hazardous
Provide temporary seal up all openig throughout
May 29, 2025
Open — Nov sent out - IInformation / order
The premises have been vacated by an order of this department and cannot be reoccupied except for caretaker, until (1) an application and plan for the work required by this article have been filed with and approved by the department of buildings, where required, (2) such work has been completed by the owner and approved by the department or the department of buildings where required, (3) where required by the department of buildings, a new certificate of occupancy has been obtained and (4) the department has inspected and determined that such dwelling is habitable. 1l west 1, 1r east 1 at 1st story, 2l west 1, 2r east 1 at 2nd story, 3l west 1, 3r east 1 at 3rd story , 4l west 1, 4r east 1 at 4th story .... vacant # 259519
May 20, 2025
Open — Info nov sent out - CImmediately hazardous
Properly repair and abate unsafe electric wiring condition consisting of exposed wiring
May 8, 2025
Open — Nov sent out - CImmediately hazardous
Provide a safe and adequate supply of electric service to the fixtures at puplic parts
May 8, 2025
Open — Nov sent out - CImmediately hazardous
Provide an adequate supply of gas to the fixtures at entire building
May 8, 2025
Open — Nov sent out - CImmediately hazardous
Abate the nuisance consisting of evidence of rats and all underlying causes creating the pest infestations, by using integrated pest management (ipm), eliminate all burrow entry and passageways, pest nests, holes, gaps or cracks in walls, ceilings, floors, fixing leaks and managing garbage in public areas. evidence found at rats
May 8, 2025
Open — Nov sent out - CImmediately hazardous
Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the ...entire cellar
May 8, 2025
Open — Nov sent out - CImmediately hazardous
Abate the nuisance consisting of evidence of rats and all underlying causes creating the pest infestations, by using integrated pest management (ipm), eliminate all burrow entry and passageways, pest nests, holes, gaps or cracks in walls, ceilings, floors, fixing leaks and managing garbage in public areas. evidence found at
May 8, 2025
Open — Nov sent out
Show 40 more ↓
- CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 3r, 3rd story, 2nd apartment from north at east
Apr 2, 2025 · Apt 3R
Open — Nov sent out - CImmediately hazardous
Provide an adequate supply of heat for the apartment in the entire apartment located at apt 3r, 3rd story, 2nd apartment from north at east
Apr 2, 2025 · Apt 3R
Open — Nov sent out - CImmediately hazardous
Provide ready access to buildings heating system door locked at boiler room, 1st story
Apr 2, 2025
Open — Nov sent out - CImmediately hazardous
Provide a safe and adequate supply of electric service to the fixtures at ceiling at all stories at public hall
Apr 2, 2025
Closed — Violation closed - CImmediately hazardous
Properly repair and abate unsafe electric wiring condition consisting of extention cord runnig from apartment to public hall in the entire apartment located at apt 3r, 3rd story
Apr 2, 2025 · Apt 3R
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.
Nov 27, 2024
Closed — Violation dismissed - BHazardous
Remove all encumbrances consisting of household items at public hall stairs, 4th story
Aug 27, 2024
Open — Nov sent out - CImmediately hazardous
Abate the infestation consisting of rodents rat excerta in the entire apartment located at apt 3r, 3rd story, 2nd apartment from west at north
Aug 27, 2024 · Apt 3R
Open — Notice of issuance sent to tenant - CImmediately hazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the bathroom located at apt 3r, 3rd story, 2nd apartment from west at north
Aug 27, 2024 · Apt 3R
Open — First no access to re- inspect violation - CImmediately hazardous
Properly repair with similar material the broken or defective wood sub. floor in the private hallway located at apt 3r, 3rd story, 2nd apartment from west at north
Aug 27, 2024 · Apt 3R
Open — First no access to re- inspect violation - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 3r, 3rd story, 2nd apartment from west at north
Aug 27, 2024 · Apt 3R
Open — Notice of issuance sent to tenant - CImmediately hazardous
Properly repair the source and abate the evidence of a water leak at ceiling in the bathroom located at apt 3r, 3rd story, 2nd apartment from west at north
Aug 27, 2024 · Apt 3R
Open — First no access to re- inspect violation - 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 10, 2024
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.
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 23, 2023
Closed — Violation dismissed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Mar 13, 2023 · Apt 3R
Closed — Violation dismissed - CImmediately hazardous
Abate the infestation consisting of mice in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Mar 13, 2023 · Apt 3R
Open — First no access to re- inspect violation - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Mar 13, 2023 · Apt 3R
Open — First no access to re- inspect violation - 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 3r, 3rd story, 1st apartment from north at east
Mar 13, 2023 · Apt 3R
Closed — Violation dismissed - BHazardous
Repair or replace the smoke detector defective in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Mar 9, 2023 · Apt 3R
Closed — Violation dismissed - BHazardous
Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Mar 9, 2023 · Apt 3R
Closed — Violation dismissed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Mar 9, 2023 · Apt 3R
Closed — Violation closed - CImmediately hazardous
Provide an adequate supply of heat for the apartment in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Mar 9, 2023 · Apt 3R
Closed — Violation closed - CImmediately hazardous
Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the .. at cellar
Feb 27, 2023
Open — First no access to re- inspect violation - ANon-hazardous
Post and maintain a notice, written in english and in spanish, on the building entrance door or other conspicuous location in the building common area, stating that: (1) the building is in the alternative enforcement program, (2) that occupants may call 311 or the aep at 212-863-8262 to report housing maintenance complaints, (3) the name, telephone, and address of the owner, and, (4) the identity of any financial institution that holds a mortgage on the property. post, 1st story
Feb 22, 2023
Closed — Violation dismissed - CImmediately hazardous
Provide an adequate supply of heat for the apartment in the entire apartment located at apt 3r, 3rd story, 2nd apartment from east at south
Feb 20, 2023 · Apt 3R
Closed — Violation closed - BHazardous
Repair or replace the smoke detector mising in the entire apartment located at apt 3r, 3rd story, 1st apartment from east at south
Feb 20, 2023 · Apt 3R
Open — First no access to re- inspect violation - BHazardous
Replace with new the missing light fixture at the ceiling in the foyer located at apt 3r, 3rd story, 1st apartment from east at south
Feb 20, 2023 · Apt 3R
Open — First no access to re- inspect violation - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the foyer located at apt 3r, 3rd story, 1st apartment from east at south
Feb 20, 2023 · Apt 3R
Open — First no access to re- inspect violation - BHazardous
Replace with new the broken or defective marble saddle in the bathroom located at apt 3r, 3rd story, 1st apartment from east at south
Feb 20, 2023 · Apt 3R
Open — First no access to re- inspect violation - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the bathroom located at apt 3r, 3rd story, 1st apartment from east at south
Feb 20, 2023 · Apt 3R
Open — First no access to re- inspect violation - CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective ... in the entrance located at apt 3r, 3rd story
Feb 20, 2023 · Apt 3R
Closed — Violation closed - BHazardous
Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 3r, 3rd story, 1st apartment from east at south
Feb 20, 2023 · Apt 3R
Open — First no access to re- inspect violation - CImmediately hazardous
Provide ready access to buildings heating system ... padlocked basement door at public hall, 1st story
Feb 20, 2023
Open — First no access to re- inspect violation - 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 public hall, 1st story
Feb 20, 2023
Open — First no access to re- inspect violation - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 3r, 3rd story, 2nd apartment from east at south
Feb 20, 2023 · Apt 3R
Closed — Violation closed - CImmediately hazardous
Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the floor at cellar
Feb 6, 2023
Open — First no access to re- inspect violation - CImmediately hazardous
Properly repair and abate unsafe electric wiring condition consisting of exposed electrical wiring ayt ceiling at cellar
Feb 6, 2023
Open — First no access to re- inspect violation - CImmediately hazardous
Properly repair the broken or defective paving floor at cellar at cellar
Feb 6, 2023
Open — First no access to re- inspect violation - CImmediately hazardous
Provide ready access to buildings heating system door locked at basement
Feb 1, 2023
Closed — Violation dismissed
DOB building violations · 3
- Low pressure boiler boiler required
Violation issued-failure to file 2024 external low pressure inspection
Nov 14, 2025
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2023 external low pressure inspection
Sep 23, 2024
Dob violation - active - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2015 inspection report
Feb 24, 2017
Dob violation - active
ECB violations · 1
- Class - 2
Piping on steam header rusted&leaking.flue pipe not properly sealed&secured. holes in walls. debris in boiler room.correct violating conditions& submit a certificate of correction
Sep 25, 2018 · Penalty $312
Resolve
Complaints
- Electric
Power outage
Apr 1, 2025 · Apt BLDG
Close - Heat/hot water
Entire building
Apr 1, 2025 · Apt BLDG
Close - Heat/hot water
Entire building
Mar 31, 2025 · Apt 3R
Close - Electric
Power outage
Mar 31, 2025 · Apt 3R
Close - Water leak
Slow leak
Aug 19, 2024 · Apt 3R
Close - Heat/hot water
Apartment only
Jan 22, 2024 · Apt 3R
Close - Heat/hot water
Entire building
Mar 28, 2023 · Apt 3R
Close - Heat/hot water
Apartment only
Mar 12, 2023 · Apt 3R
Close - Heat/hot water
Entire building
Mar 12, 2023 · Apt 4R
Close - Heat/hot water
Apartment only
Mar 7, 2023 · Apt 3R
Close
Show 40 more ↓
- Heat/hot water
Entire building
Feb 18, 2023 · Apt 3R
Close - Heat/hot water
Entire building
Feb 1, 2023 · Apt 4R
Close - Heat/hot water
Entire building
Jan 30, 2023 · Apt 3R
Close - Heat/hot water
Apartment only
Jan 24, 2023 · Apt 4R
Close - Heat/hot water
Entire building
Jan 24, 2023 · Apt BLDG
Close - Heat/hot water
Entire building
Jan 24, 2023 · Apt 3R
Close - Heat/hot water
Entire building
Jan 22, 2023 · Apt 3R
Close - Heat/hot water
Entire building
Jan 20, 2023 · Apt BLDG
Close - Heat/hot water
Entire building
Jan 17, 2023 · Apt BLDG
Close - Heat/hot water
Entire building
Jan 16, 2023 · Apt 3R
Close - Door/window
Door
Sep 30, 2018 · Apt 3R
Close - Unsanitary condition
Pests
Sep 25, 2018 · Apt 3R
Close - Unsanitary condition
Pests
Sep 25, 2018 · Apt 3R
Close - Paint/plaster
Ceiling
Sep 25, 2018 · Apt 3R
Close - Unsanitary condition
Pests
Sep 24, 2018 · Apt 4R
Close - Unsanitary condition
Garbage/recycling storage
Sep 24, 2018 · Apt 4R
Close - Electric
No lighting
Sep 24, 2018 · Apt 4R
Close - Unsanitary condition
Garbage/recycling storage
Sep 24, 2018 · Apt 4R
Close - General
Bell/buzzer/intercom
Sep 24, 2018 · Apt 4R
Close - General
Mailbox
Sep 24, 2018 · Apt 4R
Close - Door/window
Door
Sep 24, 2018 · Apt 4R
Close - Electric
Wiring
Sep 24, 2018 · Apt 4R
Close - Flooring/stairs
Floor
Sep 24, 2018 · Apt 4R
Close - Door/window
Door
Sep 24, 2018 · Apt 4R
Close - Paint/plaster
Wall
Sep 4, 2018 · Apt 4R
Close - Flooring/stairs
Floor
Sep 4, 2018 · Apt 4R
Close - Unsanitary condition
Pests
Sep 4, 2018 · Apt 4R
Close - Plumbing
Toilet
Sep 4, 2018 · Apt 4R
Close - Door/window
Door
Sep 4, 2018 · Apt 4R
Close - Plumbing
Toilet
Sep 4, 2018 · Apt 4R
Close - Unsanitary condition
Mold
Jul 28, 2018 · Apt 3R
Close - Water leak
Heavy flow
Jul 28, 2018 · Apt 3R
Close - Plumbing
Bathtub/shower
Jul 28, 2018 · Apt 3R
Close - Water leak
Damp spot
Dec 5, 2017 · Apt 3R
Close - Water leak
Damp spot
Dec 5, 2017 · Apt 3R
Close - Paint/plaster
Ceiling
Dec 5, 2017 · Apt 3R
Close - Paint/plaster
Ceiling
Dec 5, 2017 · Apt 3R
Close - Plumbing
Steam pipe/riser
Dec 5, 2017 · Apt 3R
Close - Plumbing
Steam pipe/riser
Dec 5, 2017 · Apt 3R
Close - Paint/plaster
Ceiling
Nov 21, 2017 · Apt 3R
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C1)
- Year built
- 1905
- Floors
- 4
- Residential units
- 8
- Building area
- 9,000 ft²
- Lot area
- 3,000 ft²
- Zoning
- R6
- Community board
- 304
- Council district
- 37
- Block / lot
- 3326 / 2
- Assessed value
- $675,900
- Landmark / historic district
- No
HPD registration #349774, last renewed Nov 12, 2025.
Questions about 537 Knickerbocker Avenue
Who owns 537 Knickerbocker Avenue?
The owner of record in NYC Department of City Planning PLUTO data is 1s Reo Opportunity 1, LLC.
Does 537 Knickerbocker Avenue have violations?
Yes. NYC HPD has recorded 305 housing violations at this property.
Is 537 Knickerbocker Avenue 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 537 Knickerbocker Avenue built?
City records list 1905 as the year it was built.
How many apartments are in 537 Knickerbocker Avenue?
It has 8 residential units.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.