733 Knickerbocker Avenue
Brooklyn, NY 11237BBL 3-03392-0001Map
Owner of record: G A G LLC
733 Knickerbocker Avenue is a walk-up apartment building built in 1905 in Brooklyn, 11237. It has 8 residential units across 4 floors. The owner of record is G A G LLC. HPD has recorded 22 housing violations here, most recently on June 5, 2026. 7 of the 22 most recent violations are still open. City tax records listed 3 rent-stabilized apartments here in 2024.
- HPD violations
- 22
- DOB violations
- 4
- ECB violations
- 8
- HPD complaints
- 103
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
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 · 22
- BHazardous
Trace and repair the source and abate the visible mold condition... greater than 10 square feet at ceiling ceiling in the bathroom located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Open — Violation will be reinspected - CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective hinges in the entrance located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Open — Invalid certification - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Open — Invalid certification - ANon-hazardous
Paint with light colored paint to the satisfaction of this department all peeling paint surfaces in the 2nd room from east at north, the 1st room from east at north, the 1st room from east at south located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Trace and repair the source and abate the visible mold condition... less than 10 square feet at south wall south wall in the bathroom located at apt 4l, 4th story, 1st apartment from east at south original violation 18983490 issued 05-jun-26 has been upgraded to class b per administrative code 27-2017.3a(3)(a) or (b).
Jun 5, 2026 · Apt 4L
Open — Civ14 mailed - BHazardous
Trace and repair the source and abate the visible mold condition... less than 10 square feet west wall in the bathroom located at apt 4l, 4th story, 1st apartment from east at south original violation 18983491 issued 05-jun-26 has been upgraded to class b per administrative code 27-2017.3a(3)(a) or (b).
Jun 5, 2026 · Apt 4L
Open — Civ14 mailed - BHazardous
Trace and repair the source and abate the visible mold condition... less than 10 square feet at east wall in the 1st room from east at north located at apt 4l, 4th story, 1st apartment from east at south original violation 18983498 issued 05-jun-26 has been upgraded to class b per administrative code 27-2017.3a(3)(a) or (b).
Jun 5, 2026 · Apt 4L
Open — Civ14 mailed - CImmediately hazardous
Correct the lead-based paint hazard - paint that tested positive for lead content and that is peeling or on a deteriorated subsurface - using work practices set forth in 28 rcny §11-06(b)(2) west wall in the bathroom located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation closed - ANon-hazardous
Trace and repair the source and abate the visible mold condition... less than 10 square feet at south wall south wall in the bathroom located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation closed - ANon-hazardous
Trace and repair the source and abate the visible mold condition... less than 10 square feet west wall in the bathroom located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation closed
Show 12 more ↓
- BHazardous
Properly repair with similar material the broken or defective wood floor in the 1st room from east at south located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Properly repair or replace the broken or defective basecabinet in the bathroom located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective ceramic floor tile in the bathroom located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective ceramic floor tiles in the foyer located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Replace with new the missing light fixture at east wall in the foyer located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - ANon-hazardous
Trace and repair the source and abate the visible mold condition... less than 10 square feet at east wall in the 1st room from east at north located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation closed - BHazardous
Properly repair or replace the broken or defective upper window sash spring balance at 1st window from north at east in the 1st room from east at north located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Properly repair or replace the broken or defective ceramic floor tiles in the kitchen located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair, replace or provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules missing in the entire apartment located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair, replace or provide an approved and operational smoke detecting device, installed in accordance with department of buildings rules and regulations missing in the entire apartment located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Closed — Violation dismissed - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 4l, 4th story, 1st apartment from east at south
Jun 5, 2026 · Apt 4L
Open — Invalid certification - 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
DOB building violations · 4
- Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
May 16, 2018
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Jan 14, 2015
Dob violation - dismissed - Low pressure boiler boiler required
Lblvio-low pressure boiler boiler required
Dec 31, 2009
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jul 25, 1994
Dob violation - dismissed
ECB violations · 8
- Class - 1
Failure to comply w/the comm's order contained in summons/vio#35309171h issued on 02/22/18 & to file a c of c pursuant to 28-201.1 & 1rcny 102-01. work w/o permit. note at front of garage removed garage door &
Sep 15, 2018
Resolve - Class - 1
Failure to comply w/ the commissioner's order contained in summons/violation#35309171h issued on 2/22/18 and to file a certificate of correction pursuant to 28-201.1 and 1rcny 102-01. for:work w/o permit at gar
Aug 1, 2018 · Penalty $2,500
Resolve - Class - 1
Failure to comply with commissioners order contained in summons/violation #35309171h issued on 02/22/18 and to file a certificate of correction pursuant to 28-201.1 and 1rcny 102-01.work without a permit.front
Jun 27, 2018 · Penalty $2,500
Resolve - Class - 1
Failure to comply w/the comm's order contained in summons/vio#35309171h issued on 02/22/18 & to file a c of c pursuant to 28-201.1 & 1rcny 102-01. for work w/o a permit. remedy: comply w/comm's order &/or file
May 15, 2018 · Penalty $2,500
Resolve - Class - 2
Occupancy contrary to that allowed by the c of o or bldg dept records.dob records indicate premises of 2nd bldg on lot is a 1 car garage-at time of inspection the garage has been altered to be a warehouse/stora
Feb 22, 2018 · Penalty $600
Resolve - Class - 1
Work w/o permits: work noted: at front of garage removed garage door &erected a 1 1/2 store extention approx 15x5x17ft enclosure steel frame decking to accomodate a small office w/stairs-flat roof w/2 small win
Feb 22, 2018 · Penalty $1,600
Resolve - Class - 2
Failure to comply w/ the commissioner's order to file a certificate ofcorrection w/ the dept. of bldg for notice of vio. # 35111880r issued on 10/17/14 pursuant to 28-204.4 & 1rcny 102-01. failure to provide un
Dec 14, 2014 · Penalty $800
Resolve - Class - 1
Failure to provide unobstructed exit passageway-noted @ said multiple dwelling rear yard.emergency gate discharge passageway for rear fire escape obstructed by padlock & rubbtsh can/garbbage evident.rem:remove
Oct 17, 2014 · Penalty $1,000
Resolve
Complaints
- Heat/hot water
Entire building
Aug 24, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Aug 12, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Aug 11, 2026 · Apt BLDG
Close - Door/window
Window frame
May 26, 2026 · Apt 4L
Close - Flooring/stairs
Floor
May 26, 2026 · Apt 4L
Close - Plumbing
Basin/sink
May 26, 2026 · Apt 4L
Close - Paint/plaster
Ceiling
May 26, 2026 · Apt 4L
Close - Heat/hot water
Apartment only
Dec 18, 2017 · Apt 2R
Close - Heat/hot water
Apartment only
Dec 18, 2017 · Apt 2R
Close - Heat/hot water
Apartment only
Dec 9, 2017 · Apt 2R
Close
Show 40 more ↓
- Heat/hot water
Entire building
Dec 8, 2017 · Apt BLDG
Close - Heat/hot water
Entire building
Dec 2, 2017 · Apt 1R
Close - Heat/hot water
Apartment only
Nov 22, 2015 · Apt 2R
Close - Door/window
Window frame
Apr 30, 2014 · Apt 2R
Close - Unsanitary condition
Pests
Apr 30, 2014 · Apt 2R
Close - Unsanitary condition
Pests
Apr 30, 2014 · Apt 2R
Close - Heat/hot water
Apartment only
Apr 30, 2014 · Apt 2R
Close - Heating
Heat related
Mar 3, 2014 · Apt 2R
Close - Plumbing
Bathtub/shower
May 26, 2012 · Apt 1R
Close - Plumbing
Water supply
Dec 8, 2011 · Apt 1R
Close - Nonconst
Vermin
Oct 25, 2011 · Apt 2R
Close - Heating
Heat related
Oct 25, 2011 · Apt 2R
Close - Electric
Electric-supply
Oct 23, 2011 · Apt 2R
Close - Heating
Heat related
Oct 23, 2011 · Apt 2R
Close - Plumbing
Bathtub/shower
Oct 23, 2011 · Apt 2R
Close - Plumbing
Basin/sink
Oct 23, 2011 · Apt 2R
Close - Electric
Wiring
Oct 23, 2011 · Apt 2R
Close - Paint/plaster
Wall
Oct 23, 2011 · Apt 2R
Close - Paint/plaster
Wall
Oct 23, 2011 · Apt 2R
Close - Nonconst
Vermin
Oct 23, 2011 · Apt 2R
Close - Plumbing
Basin/sink
May 27, 2011 · Apt 3R
Close - Electric
Bell-buzzer/intercom
May 27, 2011 · Apt 3R
Close - General
Locks
May 27, 2011 · Apt 3R
Close - Paint/plaster
Ceiling
May 27, 2011 · Apt 3R
Close - Paint/plaster
Wall
May 27, 2011 · Apt 3R
Close - Plumbing
Bathtub/shower
May 27, 2011 · Apt 3R
Close - Plumbing
Basin/sink
May 27, 2011 · Apt 3R
Close - Plumbing
Basin/sink
May 27, 2011 · Apt 3R
Close - Appliance
Refrigerator
Apr 23, 2011 · Apt 2R
Close - Heating
Heat related
Apr 23, 2011 · Apt 2R
Close - General
Windows
Apr 23, 2011 · Apt 2R
Close - Paint/plaster
Wall
Apr 23, 2011 · Apt 2R
Close - Paint/plaster
Ceiling
Apr 23, 2011 · Apt 2R
Close - Paint/plaster
Ceiling
Apr 23, 2011 · Apt 2R
Close - General
Mold
Apr 23, 2011 · Apt 2R
Close - General
Locks
Apr 23, 2011 · Apt 3R
Close - Heating
Heat related
Apr 23, 2011 · Apt 3R
Close - General
Windows
Apr 2, 2011 · Apt 2R
Close - General
Ceramic-tile
Apr 2, 2011 · Apt 2R
Close - General
Mold
Apr 2, 2011 · Apt 2R
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C7)
- Year built
- 1905
- Floors
- 4
- Residential units
- 8
- Building area
- 6,864 ft²
- Lot area
- 2,200 ft²
- Zoning
- R6
- Community board
- 304
- Council district
- 37
- Block / lot
- 3392 / 1
- Assessed value
- $690,300
- Landmark / historic district
- No
HPD registration #315486, last renewed Jul 24, 2025.
Questions about 733 Knickerbocker Avenue
Who owns 733 Knickerbocker Avenue?
The owner of record in NYC Department of City Planning PLUTO data is G A G LLC.
Does 733 Knickerbocker Avenue have violations?
Yes. NYC HPD has recorded 22 housing violations at this property.
Is 733 Knickerbocker Avenue rent stabilized?
NYC Department of Finance tax bills listed 3 rent-stabilized units here in 2024 (about 38% of its 8 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 733 Knickerbocker Avenue built?
City records list 1905 as the year it was built.
How many apartments are in 733 Knickerbocker Avenue?
It has 8 residential units and 9 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.