729 Knickerbocker Avenue
Brooklyn, NY 11221BBL 3-03392-0003Map
Owner of record: Knickerbocker One Estate LLC
729 Knickerbocker Avenue is a walk-up apartment building built in 1906 in Brooklyn, 11221. It has 8 residential units across 4 floors. The owner of record is Knickerbocker One Estate LLC. HPD has recorded 160 housing violations here, most recently on September 7, 2026. 2 of the 50 most recent violations are still open. City tax records listed 8 rent-stabilized apartments here in 2024.
- HPD violations
- 160
- DOB violations
- 11
- ECB violations
- 0
- HPD complaints
- 216
What to know
No open immediately-hazardous violations among recent records.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
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.
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 · 160
- BHazardous
Abate the nuisance consisting of pests. evidence of flies in the entire apartment located at apt 1f, 1st story, 1st apartment from east at south
Sep 7, 2026 · Apt 1F
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.
May 5, 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 19, 2025
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 10, 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.
Feb 25, 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 9, 2021
Closed — Violation dismissed - BHazardous
Repair or replace the carbon monoxide detecting device(s). defective located at apt 1f, 1st story, 1st apartment from north at east
Jul 21, 2020 · Apt 1F
Closed — Violation dismissed - BHazardous
Fire egress defective. remove obstructing bars or unlawful gates from at least 1 window or provide approved type gate , in the entire apartment located at apt 1f, 1st story, 1st apartment from north at east
Jul 21, 2020 · Apt 1F
Closed — Violation dismissed - CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective , in the entrance located at apt 1f, 1st story, 1st apartment from north at east
Jul 21, 2020 · Apt 1F
Closed — Violation closed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and west wall in the 4th room from north located at apt 1f, 1st story, 1st apartment from north at east
Jul 21, 2020 · Apt 1F
Closed — Violation dismissed
Show 40 more ↓
- CImmediately hazardous
Properly repair the source and abate the evidence of a water leak at ceiling and west wall in the 4th room from north located at apt 1f, 1st story, 1st apartment from north at east
Jul 21, 2020 · Apt 1F
Closed — Violation closed - BHazardous
Repair or replace the smoke detector defective located at apt 1f, 1st story, 1st apartment from north at east
Jul 21, 2020 · Apt 1F
Closed — Violation dismissed - BHazardous
And dept. rules and regulations. remove the encumbrance obstructing egress from fire escapes household items 3rd story blacony at building front
Jul 11, 2018
Closed — Violation dismissed - BHazardous
Replace with new the broken or defective lower glass pane at building front door
Jul 11, 2018
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective ceramic floor tiles at public hall, 1st story
Jul 11, 2018
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective fire retardant ceiling at public hall, 4th story
Jul 11, 2018
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
Jul 11, 2018
Closed — Violation dismissed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and west wall in the 4th room from east located at apt 4b, 4th story, apartment at east
Mar 14, 2018 · Apt 4B
Closed — Violation closed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and north wall in the bathroom located at apt 4b, 4th story, apartment at east
Mar 14, 2018 · Apt 4B
Closed — Violation closed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the private hallway located at apt 4b, 4th story, 1st apartment from north at east
Mar 14, 2018 · Apt 4B
Closed — Violation closed - ANon-hazardous
Post, in a form approved by the commissioner, and maintain a notice in a common area of the building regarding the procedures that should be followed when a gas leak is suspected at public hall
Mar 14, 2018
Closed — Violation dismissed - BHazardous
Trace and repair the source and abate the nuisance consisting of mold ... at ceiling 1 sq.foot in the bathroom located at apt 4b, 4th story, apartment at east
Mar 14, 2018 · Apt 4B
Open — Invalid certification - CImmediately hazardous
Fire escape defective. replace with new the broken, defective and/or missing batten at balcony building rear at west at fire escape, 4th story
Mar 14, 2018
Closed — Violation dismissed - ANon-hazardous
Paint or post a sign indicating floors all stories at public hall
Mar 14, 2018
Closed — Violation dismissed - BHazardous
Remove all encumbrances consisting of bike and strolers at public hall, 1st story
Dec 7, 2015
Closed — Violation dismissed - ANon-hazardous
Post and maintain a proper sign on wall of entrance story showing the registration number assigned by the department and the address of the building., 1st story
Sep 24, 2015
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. , 1st story
Sep 24, 2015
Closed — Violation dismissed - ANon-hazardous
Post a proper notice of smoke detector requirements, in a form approved by the commissioner, at or near the mail box , , 1st story
Sep 24, 2015
Closed — Violation dismissed - BHazardous
Repair the roof so that it will not leak ceiling in the 4th room from east located at apt 4b, 4th story, apartment at east
May 6, 2015 · Apt 4B
Closed — Violation dismissed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling and west wall in the 4th room from east located at apt 4b, 4th story, apartment at east
Oct 7, 2013 · Apt 4B
Closed — Violation closed - CImmediately hazardous
Repair the roof so that it will not leak over the ceiling in the 4th room from east located at apt 4b, 4th story, apartment at east
Oct 7, 2013 · Apt 4B
Closed — Violation dismissed - ANon-hazardous
Paint with light colored paint to the satisfaction of this department the water stained east wall in the kitchen located at apt 4b, 4th story, apartment at east
Oct 7, 2013 · Apt 4B
Closed — Violation dismissed - BHazardous
Replace or repair the self-closing doors that is missing or defective .... in the entrance located at apt 4b, 4th story, apartment at east
Oct 7, 2013 · Apt 4B
Closed — Violation dismissed - CImmediately hazardous
Properly repair the source and abate the evidence of a water leak causing flooding at the hot water heater room at cellar front at boiler room
May 17, 2013
Closed — Violation closed - CImmediately hazardous
Provide an adequate supply of gas to the fixtures , the main supply line for building has been shut off by utility co.
May 17, 2013
Closed — Violation closed - CImmediately hazardous
Provide seal for all accessible openings throughout building
Feb 15, 2012
Closed — Violation closed - CImmediately hazardous
Abate the nuisance consisting of rodents large fecile, holes and dirt mounds throughout paving, floor at cellar
Feb 8, 2012
Closed — Violation closed - CImmediately hazardous
M/d law abate the nuisance consisting of illegal gas taps feeding hot water heater and heating unit for apt #2 at cellar
Feb 8, 2012
Closed — Violation closed - CImmediately hazardous
M/d law abate the nuisance consisting of electric wire tap's feeding apt #2 present at east pannel, front at cellar
Feb 8, 2012
Closed — Violation closed - CImmediately hazardous
Replace with new the broken or defective metal trap doors, at front and rear of building at cellar
Feb 8, 2012
Closed — Violation closed - 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 2, 2nd story, 1st apartment from north at east
Feb 8, 2012 · Apt 2
Closed — Violation dismissed - CImmediately hazardous
Cleanse and disinfect to the satisfaction of this department after removing the dog waste present throughout floor at public hall, 1st story
Feb 1, 2012
Closed — Violation closed - CImmediately hazardous
Replace with new the broken or defective metal, fire retardent door, at entrance to building at public hall, 1st story
Feb 1, 2012
Closed — Violation closed - BHazardous
Remove all encumbrances consisting of lumber, construction material and scattered garbage throughout floor at public hall, 1st story
Feb 1, 2012
Closed — Violation closed - IInformation / order
The premises has been selected to participate in the alternative enforcement program which may result in building-wide inspections, fees, and extensive repair work to correct violations and underlying conditions. charges for repair work done pursuant to this order, if not paid, will become liens on the property
Jan 31, 2012
Closed — Violation dismissed - CImmediately hazardous
M/d law abate the nuisance consisting of no electricity all story at public hall
Nov 23, 2011
Closed — Violation closed - CImmediately hazardous
Properly repair the broken or defective front entrance door to building at public hall, 1st story
Nov 23, 2011
Closed — Violation closed - CImmediately hazardous
M/d law abate the nuisance consisting of scalding hot water(152 f) in the kitchen located at apt 2, 2nd story, 1st apartment from north at east
Nov 23, 2011 · Apt 2
Closed — Violation closed - BHazardous
M/d law abate the nuisance consisting of extention electrical cord from apartment #2 to ceiling light fixture at public hall, 2nd story
Nov 7, 2011
Closed — Violation closed - BHazardous
Provide adequate light of not less than 60 watts incandescent or equivalent illumination 1st and 2nd story at public hall
Nov 7, 2011
Closed — Violation closed
DOB building violations · 11
- Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 26, 2002
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 27, 2001
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 7, 2000
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 16, 1999
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
May 4, 1998
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Sep 16, 1997
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 · 0
No ECB violations on record
Complaints
- Unsanitary condition
Mold
Aug 26, 2026 · Apt 1F
Close - Unsanitary condition
Pests
Aug 26, 2026 · Apt 1F
Close - Unsanitary condition
Pests
Aug 26, 2026 · Apt 1F
Close - Door/window
Window frame
Aug 26, 2026 · Apt 1F
Close - Heat/hot water
Apartment only
Mar 21, 2022 · Apt 1F
Close - Water leak
Heavy flow
Jul 17, 2020 · Apt 1F
Close - Unsanitary condition
Pests
Oct 19, 2019 · Apt 1F
Close - Electric
No lighting
Oct 19, 2019 · Apt 1F
Close - Water leak
Heavy flow
Mar 8, 2018 · Apt 4B
Close - Unsanitary condition
Mold
Mar 8, 2018 · Apt 4B
Close
Show 40 more ↓
- Safety
Sprinkler
Mar 8, 2018 · Apt 4B
Close - Unsanitary condition
Pests
Jan 11, 2017 · Apt 3F
Close - Unsanitary condition
Pests
Jan 3, 2017 · Apt 3F
Close - Heat/hot water
Entire building
Dec 22, 2016 · Apt BLDG
Close - Unsanitary condition
Pests
Nov 24, 2016 · Apt 3F
Close - Unsanitary condition
Pests
Oct 18, 2016 · Apt 3F
Close - Plumbing
Water-leaks
Jan 4, 2014 · Apt 3R
Close - Plumbing
Water-leaks
Jan 4, 2014 · Apt 3R
Close - Paint/plaster
Wall
Oct 2, 2013 · Apt 4B
Close - Paint/plaster
Wall
Oct 2, 2013 · Apt 4B
Close - Plumbing
Water-leaks
Oct 2, 2013 · Apt 4B
Close - Plumbing
Water supply
May 16, 2013 · Apt 3R
Close - Heating
Heat related
May 16, 2013 · Apt NA
Close - Heating
Heat related
Nov 18, 2011 · Apt 2
Close - Heating
Heat related
Nov 3, 2011 · Apt 2
Close - Heating
Heat related
Nov 3, 2011 · Apt 2
Close - Heating
Heat related
Oct 23, 2011 · Apt 2
Close - Heating
Heat related
Oct 13, 2011 · Apt 2
Close - Heating
Heat related
Sep 27, 2011 · Apt 2
Close - General
Locks
Aug 12, 2011 · Apt XX
Close - Plumbing
Water supply
Aug 2, 2011 · Apt 2
Close - Heating
Heat related
Dec 3, 2010 · Apt 1
Close - Nonconst
Smoke detector
Nov 16, 2010 · Apt 4
Close - Paint/plaster
Ceiling
Nov 16, 2010 · Apt 4
Close - Paint/plaster
Ceiling
Nov 16, 2010 · Apt 4
Close - Paint/plaster
Ceiling
Nov 16, 2010 · Apt 4
Close - Nonconst
Smoke detector
Nov 16, 2010 · Apt 1
Close - Nonconst
Carbon monoxide
Nov 16, 2010 · Apt 1
Close - Appliance
Electric/gas range
Nov 16, 2010 · Apt 1
Close - Heating
Heat related
Nov 16, 2010 · Apt 1
Close - Nonconst
Carbon monoxide
Nov 16, 2010 · Apt 4
Close - Plumbing
Toilet
Nov 16, 2010 · Apt 3
Close - Paint/plaster
Ceiling
Nov 16, 2010 · Apt 3
Close - Paint/plaster
Ceiling
Nov 16, 2010 · Apt 3
Close - Paint/plaster
Wall
Nov 16, 2010 · Apt 3
Close - Nonconst
Carbon monoxide
Nov 16, 2010 · Apt 3
Close - Construction
Roof
Nov 16, 2010 · Apt 3
Close - General
Mold
Nov 16, 2010 · Apt 3
Close - Nonconst
Vermin
Nov 16, 2010 · Apt 3
Close - Nonconst
Rubbish
Nov 16, 2010 · Apt 3
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C1)
- Year built
- 1906
- Floors
- 4
- Residential units
- 8
- Building area
- 7,300 ft²
- Lot area
- 2,600 ft²
- Zoning
- R6
- Community board
- 304
- Council district
- 37
- Block / lot
- 3392 / 3
- Assessed value
- $904,050
- Landmark / historic district
- No
HPD registration #343128, last renewed Jan 6, 2026.
Questions about 729 Knickerbocker Avenue
Who owns 729 Knickerbocker Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Knickerbocker One Estate LLC.
Does 729 Knickerbocker Avenue have violations?
Yes. NYC HPD has recorded 160 housing violations at this property.
Is 729 Knickerbocker Avenue rent stabilized?
NYC Department of Finance tax bills listed 8 rent-stabilized units here in 2024 (about 100% of its 8 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 729 Knickerbocker Avenue built?
City records list 1906 as the year it was built.
How many apartments are in 729 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.