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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

Concern
3 open Class C

Immediately hazardous issues among recent violations are still open.

Good
Last violation Jun 5, 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 38% of the building's 8 apartments

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 · 22

  • B

    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
  • C

    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
  • C

    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
  • A

    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
  • B

    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
  • B

    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
  • B

    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
  • C

    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
  • A

    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
  • A

    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 ↓
  • B

    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
  • B

    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
  • B

    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
  • B

    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
  • B

    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
  • A

    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
  • B

    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
  • B

    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
  • B

    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
  • B

    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
  • C

    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
  • 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

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

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

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.