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833 Knickerbocker Avenue

Brooklyn, NY 11237BBL 3-03425-0009Map

Owner of record: 831 On LLC

833 Knickerbocker Avenue is a walk-up apartment building built in 1931 in Brooklyn, 11237. It has 8 residential units across 2 floors. The owner of record is 831 On LLC. HPD has recorded 13 housing violations here, most recently on May 5, 2026. 9 of the 13 most recent violations are still open.

HPD violations
13
DOB violations
28
ECB violations
14
HPD complaints
2

What to know

Good
No open Class C

No open immediately-hazardous violations among recent records.

Good
Last violation May 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

No rent-stabilized units in 2018–2024 tax bills

Some apartments can still be regulated. Use the rent-stabilized checker or request the rent history from HCR.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 13

  • 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.

    May 5, 2026

    Open — Nov sent out
  • 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 18, 2025

    Open — Info 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.

    Jun 10, 2025

    Open — Nov sent out
  • 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 26, 2024

    Open — Info 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.

    Apr 10, 2024

    Open — Nov sent out
  • 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 17, 2023

    Open — Info 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

    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.

    Feb 25, 2022

    Open — Nov sent out
  • 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.

    Feb 25, 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.

    Apr 9, 2021

    Open — Nov sent out
Show 3 more ↓
  • 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.

    Apr 9, 2021

    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.

    Oct 18, 2018

    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 10, 2016

    Closed — Violation dismissed

DOB building violations · 28

  • Low pressure boiler boiler required

    Violation issued-failure to file 2024 external low pressure inspection

    Nov 14, 2025

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2024 external low pressure inspection

    Nov 14, 2025

    Dob violation - dismissed
  • Fail to certify class 1 none

    Failure to certify correction on immediately hazardous (class 1) ecb violation

    Mar 5, 2025

    Dob violation - dismissed
  • Fail to certify class 1 none

    Failure to certify correction on immediately hazardous (class 1) ecb violation

    Mar 5, 2025

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2023 external low pressure inspection

    Sep 23, 2024

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2023 external low pressure inspection

    Sep 23, 2024

    Dob violation - dismissed
  • Construction other optional

    As per section 28-207.2 job #321599034 issued swo. due to contractor withdrawal from project .

    Mar 21, 2024

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2020 external low pressure inspection

    Jun 30, 2023

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2020 external low pressure inspection

    Jun 30, 2023

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2021 external low pressure inspection

    Jun 30, 2023

    Dob violation - dismissed
Show 18 more ↓
  • Low pressure boiler boiler required

    Violation issued-failure to file 2021 external low pressure inspection

    Jun 30, 2023

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2018 external low pressure inspection

    Jun 20, 2023

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2018 external low pressure inspection

    Jun 20, 2023

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2022 external low pressure inspection

    Apr 25, 2023

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued-failure to file 2022 external low pressure inspection

    Apr 25, 2023

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2017 inspection report

    Nov 8, 2019

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2017 inspection report

    Nov 8, 2019

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2016 inspection report

    Apr 6, 2018

    Dob violation - dismissed
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2016 inspection report

    Apr 6, 2018

    Dob violation - dismissed
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jan 31, 2005

    Dob violation - dismissed
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jan 31, 2005

    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

    Jun 1, 1994

    Dob violation - dismissed
  • 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

    Aug 16, 1993

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jun 1, 1993

    Dob violation - dismissed
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jun 1, 1993

    Dob violation - dismissed

ECB violations · 14

  • Class - 2

    Failure to file required annual boiler inspection reports for low-pressure boiler 30000071767n0002 in accordance with the rules of the department. 1rcny 103-01(d)(1) requires that an annual inspection report fo

    Jul 1, 2025 · Penalty $1,562

    Resolve
  • Class - 2

    Failure to file required annual boiler inspection reports for low-pressure boiler 30000071767n0001 in accordance with the rules of the department. 1rcny 103-01(d)(1) requires that an annual inspection report fo

    May 28, 2025 · Penalty $625

    Resolve
  • Class - 2

    3314.1-observed erected pipe scaffold installed @ exposures 1 & 2, platform not fully planked, loose planks missing toe board and mid rails, top rails, missing nettings created unsafe & hazardous conditions fo

    Mar 17, 2025 · Penalty $2,500

    Resolve
  • Class - 2

    3314.3.4-during inspection observed 4 story alteration active site erected pipe scaffold on sws, upon request to see load-imposed letter for scaffold on sws none was provided by competent person. failure to pro

    Mar 17, 2025 · Penalty $1,250

    Resolve
  • Class - 1

    Blocked egress at 1st floor & roof level 3303.9, no stair identification signs in stairwell 3303.7.6, no guardrails at floor leading into cellar 3308.7, no handrails 3303.11.2, chimney not protected 3309.1 & in

    Nov 29, 2024 · Penalty $5,000

    Resolve
  • Class - 1

    General contractor failed to designate alternate construction superintendent or competent person in absence of primary construction superintendent reg #0026528. the last recorded presence of competent person w

    Nov 29, 2024

    Resolve
  • Class - 2

    Supported scaffold at exposure #4 not maintained per code. planks not tied down 3314.5.5, multiple zip ties used to attach members not per manu specs, 3rd tie-in at top non existent, pins missing & guardrails &

    Nov 29, 2024 · Penalty $2,500

    Resolve
  • Class - 2

    When requested, daily, 6month inspections & install letters for supported scaffold & sidewalk shed, tool box talks, safety orientations, none could be provided. this condition is a clear violation that is not i

    Nov 29, 2024 · Penalty $625

    Resolve
  • Class - 2

    Sidewalk shed not maintained per code, observed cross braces at not secured at the street level of exposure #2, this condition is a clear violation that is not in compliant w/ sections 3301.5.stop all use of si

    Nov 29, 2024 · Penalty $2,500

    Resolve
  • Class - 2

    Responding a complaint observed: sidewalk shed installed at expo# 1-4. no underside lighting inoperable light bulbs, failure to maintain as per code 3307.6.4.8 become an unsafe and hazardous condition for pedes

    Nov 14, 2024 · Penalty $2,400

    Resolve
Show 4 more ↓
  • Class - 1

    Failure to submit the required parking structure initial observation report for an existing parking structure or a periodic inspection of a parking structure(pips) report documenting the conditions of psid#b000

    Oct 1, 2024 · Penalty $2,530

    Active
  • Class - 2

    Proposed horizontal and vertical extension community facility 8 family dweling units on existing community facility and 3 residential building. observed active site cp present, upon inspection was noted: c jois

    Jun 14, 2024 · Penalty $3,125

    Resolve
  • Class - 2

    Proposed horizontal and vertical extension community facility 8 family dweling units on existing community facility and 3 residential building. observed active site cp present, upon inspection was noted:sws per

    Jun 14, 2024

    Resolve
  • Class - 1

    Failure to maintain building in code-compliant manner. note : at time of inspection, observed construction site under active permit # 321599034-01-al issued 03/23/22 unguarded and open with a large gap at expos

    Dec 28, 2022 · Penalty $1,250

    Resolve

Complaints

  • Unsanitary condition

    Garbage/recycling storage

    Nov 3, 2023 · Apt BLDG

    Close
  • Unsanitary condition

    Garbage/recycling storage

    Sep 16, 2021 · Apt BLDG

    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
1931
Floors
2
Residential units
8
Building area
10,042 ft²
Lot area
3,667 ft²
Zoning
—
Community board
304
Council district
37
Block / lot
3425 / 9
Assessed value
$416,250
Landmark / historic district
No

HPD registration #350007, last renewed Sep 22, 2022.

Questions about 833 Knickerbocker Avenue

Who owns 833 Knickerbocker Avenue?

The owner of record in NYC Department of City Planning PLUTO data is 831 On LLC.

Does 833 Knickerbocker Avenue have violations?

Yes. NYC HPD has recorded 13 housing violations at this property.

Is 833 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 833 Knickerbocker Avenue built?

City records list 1931 as the year it was built.

How many apartments are in 833 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.