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223 Knickerbocker Avenue

Brooklyn, NY 11237BBL 3-03187-0006Map

Owner of record: 223 Knickerbocker LLC

223 Knickerbocker Avenue is a walk-up apartment building built in 1931 in Brooklyn, 11237. It has 6 residential units across 3 floors. The owner of record is 223 Knickerbocker LLC. HPD has recorded 205 housing violations here, most recently on July 21, 2026. 26 of the 50 most recent violations are still open. City tax records listed 3 rent-stabilized apartments here in 2024.

HPD violations
205
DOB violations
19
ECB violations
4
HPD complaints
738

What to know

Concern
8 open Class C

Immediately hazardous issues among recent violations are still open.

Watch
Last violation Jul 21, 2026

Date of the most recent HPD inspection that found a problem.

Good
No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

Rent-stabilized units in 2024
3
About 50% of the building's 6 apartments
Down from 4 in 2018

Counts come from owners' rent-stabilization filings shown on NYC Department of Finance tax bills, as extracted by JustFix. They tell you a building has stabilized apartments, not which ones.

Stabilized units by tax-bill year

Think your apartment is stabilized? Request its rent history from HCR (free), then check your renewal with the renewal calculator.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 205

  • B

    Remove all encumbrances consisting of house hold items at public hall, 3rd story

    Jul 21, 2026

    Open — Nov sent out
  • B

    Remove all encumbrances consisting of house hold items at public hall, 1st story

    Jul 21, 2026

    Open — Nov sent out
  • A

    Cleanse to the satisfaction of this department the wall at east in the bathroom located at apt 1l, 1st story, 1st apartment from west at north

    Apr 1, 2026 · Apt 1L

    Closed — Violation dismissed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges in the entrance located at apt 1r, 1st story, 1st apartment from north at east

    Feb 21, 2026 · Apt 1R

    Closed — Violation dismissed
  • B

    Repair, replace or provide an approved and operational smoke detecting device, installed in accordance with department of buildings rules and regulations that is missing in the entire apartment located at apt 1r, 1st story, 1st apartment from north at east

    Feb 21, 2026 · Apt 1R

    Closed — Violation dismissed
  • B

    Repair, replace or provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules that is missing in the entire apartment located at apt 1r, 1st story, 1st apartment from north at east

    Feb 21, 2026 · Apt 1R

    Closed — Violation dismissed
  • A

    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

    Closed — Violation dismissed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the bathroom located at apt 1l, 1st story, 1st apartment from south at west

    Feb 12, 2025 · Apt 1L

    Open — Nov sent out
  • B

    Properly repair the source and abate the evidence of a water leak at ceiling in the bathroom located at apt 1l, 1st story, 1st apartment from south at west

    Feb 12, 2025 · Apt 1L

    Open — Nov sent out
  • B

    Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 3l, 3rd story, 1st apartment from west at north

    May 22, 2024 · Apt 3L

    Open — Nov sent out
Show 40 more ↓
  • B

    Repair or replace the smoke detector missing in the entire apartment located at apt 3l, 3rd story, 1st apartment from west at north

    May 22, 2024 · Apt 3L

    Open — Nov sent out
  • C

    Replace or repair the self-closing doors that is missing or defective ... in the entrance located at apt 3l, 3rd story, 1st apartment from west at north

    May 22, 2024 · Apt 3L

    Open — Nov sent out
  • B

    Remove all encumbrances consisting of household item at 3rd story. at public hall, 3rd story

    May 22, 2024

    Open — Nov sent out
  • B

    Properly repair with similar material the broken or defective wood flooring in the kitchen located at apt 2r, 2nd story, 1st apartment from east at south

    Sep 20, 2023 · Apt 2R

    Open — Nov sent out
  • B

    Repair or replace the smoke detector defective in the entire apartment located at apt 2r, 2nd story, 1st apartment from east at south

    Sep 20, 2023 · Apt 2R

    Open — Nov sent out
  • B

    Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment located at apt 2r, 2nd story, 1st apartment from east at south

    Sep 20, 2023 · Apt 2R

    Open — Nov sent out
  • B

    Replace the broken or defective wash basin in the bathroom located at apt 2r, 2nd story, 1st apartment from east at south

    Sep 20, 2023 · Apt 2R

    Open — Nov sent out
  • B

    Remove all encumbrances consisting of ladder, shelving, garment rack, bicycle at public hall, 1st story

    Sep 20, 2023

    Open — Nov sent out
  • A

    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
  • I

    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 14, 2022

    Closed — Violation dismissed
  • A

    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 25, 2022

    Closed — Violation dismissed
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt 2r, 2nd story, 1st apartment from east at south

    Nov 5, 2021 · Apt 2R

    Open — Notice of issuance sent to tenant
  • C

    M/d law abate the nuisance consisting of hot water exceeding 130 degrees in the bathroom located at apt 2r, 2nd story, 1st apartment from east at south

    Nov 5, 2021 · Apt 2R

    Closed — Violation closed
  • B

    Properly repair the broken or defective counter balance of lower window sash in the 4th room from east located at apt 2r, 2nd story, 1st apartment from east at south

    Nov 5, 2021 · Apt 2R

    Open — Nov sent out
  • B

    Replace with new the missing door at west wall cabinet in the kitchen located at apt 2r, 2nd story, 1st apartment from east at south

    Nov 5, 2021 · Apt 2R

    Open — Nov sent out
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt 2r, 2nd story, 1st apartment from east at south

    Nov 5, 2021 · Apt 2R

    Open — Notice of issuance sent to tenant
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt 2r, 2nd story, 1st apartment from east at south

    Oct 18, 2021 · Apt 2R

    Open — Notice of issuance sent to tenant
  • B

    Properly repair with similar material the broken or defective wood subfloor in the kitchen located at apt 2r, 2nd story, 1st apartment from east at south

    Oct 18, 2021 · Apt 2R

    Open — Invalid certification
  • B

    Properly repair with similar material the broken or defective wood floor in the kitchen located at apt 2r, 2nd story

    Aug 12, 2021 · Apt 2R

    Open — Nov sent out
  • A

    Repair the broken or defective plastered surfaces and paint in a uniform color the south wall in the 4th room from north located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Closed — Violation dismissed
  • A

    Paint metal in accordance with dept. regulation the northeast heat riser in the 2nd room from north located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Closed — Violation dismissed
  • C

    Properly repair the source and abate the evidence of a water leak at the east wall in the 3rd room from north located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the walls in the 3rd room from north located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Closed — Violation dismissed
  • A

    Provide a peep hole in entrance door of the dwelling unit so located so as to permit a person inside the dwelling to view any person outside entrance door , located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective wood floor in the kitchen located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Open — Nov sent out
  • C

    Properly secure the loose lower sash window in the kitchen located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Closed — Violation closed
  • C

    Properly secure the loose light fixture at the ceiling in the 2nd room from north located at apt 2r, 2nd story, apartment at south

    Jun 22, 2021 · Apt 2R

    Closed — Violation closed
  • C

    Arrange and make self-closing the doors leading to cellar at public hall, 1st story

    May 9, 2021

    Closed — Violation closed
  • A

    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 9, 2021

    Closed — Violation dismissed
  • B

    And dept. rules and regulations. remove the encumbrance obstructing egress from fire escapes consisting of household items on the 2nd story balcony, east exterior wall at fire escape

    Feb 24, 2020

    Closed — Violation dismissed
  • B

    M/d law abate the nuisance consisting of household item (vanity dresser) obstructing east door, secondary means of egress in the 4th room from east located at apt 2l, 2nd story, 1st apartment from west at north

    Feb 24, 2020 · Apt 2L

    Closed — Violation dismissed
  • B

    Properly repair the broken or defective warped wood floor in the kitchen located at apt 2l, 2nd story, 1st apartment from west at north

    Feb 24, 2020 · Apt 2L

    Open — Nov sent out
  • B

    Repair the leaky and/or defective water supply pipe at sink- (cold side) in the kitchen located at apt 2l, 2nd story

    Dec 2, 2019 · Apt 2L

    Closed — Violation dismissed
  • C

    Arrange and make self-closing the doors at east entrance located at apt 2l, 2nd story

    Dec 2, 2019 · Apt 2L

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective rotted wood base at cabinet under sink in the kitchen located at apt 2l, 2nd story

    Nov 14, 2019 · Apt 2L

    Closed — Violation dismissed
  • C

    Repair the broken or defective connection at wasteline under sink in the kitchen located at apt 2l, 2nd story

    Nov 14, 2019 · Apt 2L

    Open — Nov sent out
  • C

    M/d law abate the nuisance consisting of hot water exceeding 130 degrees at all fixtures located at apt 2l, 2nd story

    Nov 14, 2019 · Apt 2L

    Closed — Violation closed
  • C

    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 2l, 2nd story, 1st apartment from west at north

    Nov 14, 2019 · Apt 2L

    Closed — Violation closed
  • C

    M/d law abate the nuisance consisting of hot water exceeding 130 degrees at all fixtures located at apt 2r, 2nd story, 1st apartment from east at south

    Nov 14, 2019 · Apt 2R

    Open — Nov sent out
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt 2r, 2nd story, 1st apartment from east at south

    Nov 14, 2019 · Apt 2R

    Open — Not complied with

DOB building violations · 19

  • 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-failure to file 2020 external low pressure inspection

    Jun 30, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2021 external low pressure inspection

    Jun 30, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2019 external low pressure inspection

    Jun 20, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2022 external low pressure inspection

    Apr 25, 2023

    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
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2013 inspection report

    Mar 3, 2015

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2012 inspection report

    May 15, 2014

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2011 inspection report

    Mar 1, 2013

    Dob violation - active
Show 9 more ↓
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2010 inspection report

    Dec 13, 2011

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jan 1, 2009

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Feb 13, 2004

    Dob violation - dismissed
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    May 4, 1998

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Sep 16, 1997

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Aug 29, 1995

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jun 1, 1994

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Aug 16, 1993

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jun 1, 1993

    Dob violation - active

ECB violations · 4

  • Class - 2

    Failure to file required annual boiler inspection reports for low-pressure boiler 30000059317y0001 in accordance with the rules of the department. 1rcny 103-01(d)(1) requires that an annual inspection report fo

    May 28, 2025 · Penalty $3,125

    Active
  • Class - 2

    Failure to maintain bldg in code compliant manner. observed in 4 sty bldg in apt#2r in bedroom opening on ceiling cover w/black plastic. thesheetrock was collapsed & new pvc 2 "piping was observed in opening on

    Jul 29, 2020 · Penalty $1,562

    Resolve
  • Class - 2

    Occupancy contrary to that allowed by cofo and dept of bldgs records.partitions erected creating 2illegal rooms w. stairs.1 room created above apt 3l @ 3rd stry and 1 room created above apt 3r @1st stry.rem:dis

    Oct 27, 2016

    Resolve
  • Class - 2

    Failure to maintain building in code-compliant manner. installation/maintenance per of plumbing materials/equipment per pc 102.3,27-902. observe in cell for new/altered gas line used prohibited union connection

    Apr 6, 2009 · Penalty $250

    Active

Complaints

  • Heat/hot water

    Apartment only

    Oct 21, 2026 · Apt 3L

    Open
  • Electric

    Power outage

    Jul 20, 2026 · Apt BLDG

    Close
  • Unsanitary condition

    Mold

    Feb 23, 2026 · Apt 1L

    Close
  • Plumbing

    Water supply

    Feb 19, 2026 · Apt BLDG

    Close
  • Plumbing

    Water supply

    Feb 19, 2026 · Apt BLDG

    Close
  • General

    Bell/buzzer/intercom

    Feb 2, 2026 · Apt 2L

    Close
  • General

    Cabinet

    Feb 2, 2026 · Apt 2L

    Close
  • Door/window

    Window frame

    Feb 2, 2026 · Apt 2L

    Close
  • Door/window

    Window frame

    Feb 2, 2026 · Apt 2L

    Close
  • Flooring/stairs

    Floor

    Feb 2, 2026 · Apt 2L

    Close
Show 40 more ↓
  • Electric

    Lighting

    Feb 2, 2026 · Apt 2L

    Close
  • Unsanitary condition

    Pests

    Feb 2, 2026 · Apt 2L

    Close
  • Door/window

    Door

    Feb 2, 2026 · Apt BLDG

    Close
  • Paint/plaster

    Wall

    Feb 2, 2026 · Apt BLDG

    Close
  • Safety

    Fire escape

    Feb 2, 2026 · Apt BLDG

    Close
  • Unsanitary condition

    Garbage/recycling storage

    Feb 2, 2026 · Apt BLDG

    Close
  • Safety

    Carbon monoxide detector

    Feb 2, 2026 · Apt 1R

    Close
  • Unsanitary condition

    Pests

    Feb 2, 2026 · Apt 2L

    Close
  • Door/window

    Door

    Feb 2, 2026 · Apt 1R

    Close
  • General

    Ventilation system

    Feb 2, 2026 · Apt 1R

    Close
  • Electric

    Lighting

    Feb 2, 2026 · Apt 2L

    Close
  • Electric

    Outlet/switch

    Feb 2, 2026 · Apt 2L

    Close
  • Electric

    Wiring

    Feb 2, 2026 · Apt 2L

    Close
  • Flooring/stairs

    Floor

    Feb 2, 2026 · Apt 2L

    Close
  • Flooring/stairs

    Floor

    Feb 2, 2026 · Apt 2L

    Close
  • Safety

    Smoke detector

    Feb 2, 2026 · Apt 2L

    Close
  • Door/window

    Window frame

    Feb 2, 2026 · Apt 2L

    Close
  • Plumbing

    Water supply

    Feb 2, 2026 · Apt 2L

    Close
  • General

    Cabinet

    Feb 2, 2026 · Apt 2L

    Close
  • Paint/plaster

    Ceiling

    Feb 2, 2026 · Apt 2L

    Close
  • Flooring/stairs

    Floor

    Feb 2, 2026 · Apt 2L

    Close
  • Door/window

    Window frame

    Feb 2, 2026 · Apt 2L

    Close
  • Plumbing

    Water supply

    Feb 2, 2026 · Apt 2L

    Close
  • Door/window

    Door

    Feb 2, 2026 · Apt 2L

    Close
  • Plumbing

    Bathtub/shower

    Feb 2, 2026 · Apt 2L

    Close
  • Plumbing

    Toilet

    Feb 2, 2026 · Apt 2L

    Close
  • Safety

    Carbon monoxide detector

    Feb 2, 2026 · Apt 2L

    Close
  • Flooring/stairs

    Floor

    Feb 2, 2026 · Apt 2L

    Close
  • Safety

    Smoke detector

    Feb 2, 2026 · Apt 1R

    Close
  • Heat/hot water

    Apartment only

    Jan 30, 2025 · Apt 1R

    Close
  • Water leak

    Heavy flow

    Dec 20, 2024 · Apt 1L

    Close
  • Water leak

    Damp spot

    Dec 20, 2024 · Apt 1L

    Close
  • Unsanitary condition

    Mold

    Dec 20, 2024 · Apt 1L

    Close
  • Unsanitary condition

    Mold

    Dec 20, 2024 · Apt 1L

    Close
  • Water leak

    Damp spot

    Dec 20, 2024 · Apt 1L

    Close
  • Water leak

    Heavy flow

    Dec 20, 2024 · Apt 1L

    Close
  • Electric

    Lighting

    Jun 26, 2024 · Apt 3L

    Close
  • Electric

    Power outage

    Jun 26, 2024 · Apt 3L

    Close
  • Appliance

    Refrigerator

    Mar 12, 2024 · Apt 3L

    Close
  • Flooring/stairs

    Floor

    Oct 9, 2023 · Apt 2L

    Close

Sales history

No recorded sales in our data

Sales come from the NYC Department of Finance rolling sales file.

Building details

Building type
Walk-up apartment building (C2)
Year built
1931
Floors
3
Residential units
6
Building area
4,275 ft²
Lot area
2,500 ft²
Zoning
R6
Community board
304
Council district
34
Block / lot
3187 / 6
Assessed value
$529,200
Landmark / historic district
No

HPD registration #336256, last renewed Aug 4, 2025.

Questions about 223 Knickerbocker Avenue

Who owns 223 Knickerbocker Avenue?

The owner of record in NYC Department of City Planning PLUTO data is 223 Knickerbocker LLC.

Does 223 Knickerbocker Avenue have violations?

Yes. NYC HPD has recorded 205 housing violations at this property.

Is 223 Knickerbocker Avenue rent stabilized?

NYC Department of Finance tax bills listed 3 rent-stabilized units here in 2024 (about 50% of its 6 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.

When was 223 Knickerbocker Avenue built?

City records list 1931 as the year it was built.

How many apartments are in 223 Knickerbocker Avenue?

It has 6 residential units.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.