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4022 9 Avenue

Brooklyn, NY 11232BBL 3-00920-0045Map

Owner of record: Wan Biu Liu

4022 9 Avenue is a walk-up apartment building built in 1945 in Brooklyn, 11232. It has 4 residential units across 2 floors. The owner of record is Wan Biu Liu. HPD has recorded 53 housing violations here, most recently on April 30, 2026. 34 of the 50 most recent violations are still open.

HPD violations
53
DOB violations
0
ECB violations
0
HPD complaints
8

What to know

Concern
3 open Class C

Immediately hazardous issues among recent violations are still open.

Good
Last violation Apr 30, 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 · 53

  • 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 30, 2026

    Open — Nov sent out
  • B

    And dept. rules and regulations. remove the encumbrance obstructing egress from fire escapes shopping cart, flower pot on the 2nd story balcony at north fire escape

    Aug 18, 2025

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at the ceiling, in the 2nd room from east at north located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling, north and east walls, in the 1st room from east at south located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • A

    Replace with new the defective flush pipe of water closet wood window casing 1st from east at south, in the 1st room from east at south located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Nov sent out
  • C

    Properly repair or replace the broken or defective glass pane at lower sash 1st window from east at south,. in the bathroom located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Closed — Violation closed
  • C

    M/d law abate the nuisance consisting of hot water exceeding the allowed temperature of 130.f degrees at hotwater fixtures, in the entire apartment located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Closed — Violation closed
  • A

    Post and maintain a proper notice on wall of the entrance story in english and spanish on the availability of the agencys housing information guide. a sample notice can be found at www.nyc.gov/hpd. at public hall, 1st story

    Aug 15, 2025

    Open — Nov sent out
  • C

    Replace or repair the self-closing doors that is missing or defective latch set at entrance door to public hall stairs at public hall, 1st story

    Aug 15, 2025

    Open — Nov sent out
  • C

    Remove device preventing door from being self-closing plastic wedge jammed the entrance door to public hall stairs at public hall, 1st story

    Aug 15, 2025

    Open — Nov sent out
Show 40 more ↓
  • A

    § 329, m/d law and dept. rules and regs. provide a completed certificate of inspection visits in a proper frame readily accessible for signature, bottom edge of frame between 48-62 inches above floor at ,missing accessable frame, at public hall, 1st story

    Aug 15, 2025

    Open — Nov sent out
  • A

    Post a proper notice of carbon monoxide detecting device requirements, in a form approved by commissioner, in a common area of a class a multiple dwelling near inspection certificate or provide notice to tenants in private dwellings

    Aug 15, 2025

    Open — Nov sent out
  • A

    Paint with light colored paint to the satisfaction of this department the ceiling, at public hall, 2nd story

    Aug 15, 2025

    Open — Nov sent out
  • A

    Paint with light colored paint to the satisfaction of this department the reccess of the skylight at public hall, 2nd story

    Aug 15, 2025

    Open — Nov sent out
  • A

    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

    Aug 15, 2025

    Open — Nov sent out
  • C

    Remove the illegal fastening double cylinder key operated lock installed at the front entrance door to building, , 1st story, section ''east''

    Aug 15, 2025

    Open — Nov sent out
  • B

    Trace and repair the source and abate the visible mold condition... less than square 10 feet at the window frame in the bathroom located at apt 2f, 2nd story, 1st apartment from east at south , section ''east'' original violation 18161641 issued 15-aug-25 has been upgraded to class b per administrative code 27-2017.3a(3)(a) or (b).

    Aug 15, 2025 · Apt 2F

    Open — Notice of issuance sent to tenant
  • B

    Remove all encumbrances consisting of flower pots with wood shelf at public hall, 2nd story

    Aug 15, 2025

    Open — Nov sent out
  • B

    Remove all encumbrances consisting of shopping cart at public hall, 1st story

    Aug 15, 2025

    Open — Invalid certification
  • C

    Replace or repair the self-closing doors that is missing or defective hinges at the front entrance door to building , , 1st story, section ''east''

    Aug 15, 2025

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective fire retardant material at the recess of the skylight, at public hall, 2nd story

    Aug 15, 2025

    Open — Invalid certification
  • B

    Properly repair with similar material the broken or defective fire retardant materials at the ceiling, at public hall, 2nd story

    Aug 15, 2025

    Open — Invalid certification
  • B

    Trace and repair the source and abate the visible mold condition... greater than 10 square feet at window frames 1st, 2nd, 3rd from north at east, in the 1st room from east at south located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • A

    Post a proper notice of smoke detector requirements, in a form approved by the commissioner, at or near the mailbox ,missing sign, at public hall, 1st story

    Aug 15, 2025

    Open — Nov sent out
  • B

    Properly repair or replace the broken or defective missing stile clips at the top rail of the lower sash window 1st from north at east, in the 1st room from east at south located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • A

    Trace and repair the source and abate the visible mold condition... less than square 10 feet at the window frame in the bathroom located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Closed — Violation closed
  • A

    Cleanse to the satisfaction of this department the visible mold at grout joints of the ceramic tiles at south and west walls around bathtub, in the bathroom located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling,east and south walls in the kitchen located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • B

    Properly repair with similar material the broken or defective ceramic floor tiles in the kitchen located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • B

    Properly repair with similar material the broken or defective wood window stool 2nd from east at south, in the kitchen located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • C

    Replace or repair the self-closing doors that is missing or defective hinges at door 1st from west at north, in the entrance located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective latch set at 1st door from north at east, in the entrance located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Closed — Violation closed
  • C

    Properly repair or replace the broken or defective mortise lock at 1st door from north at east , in the entrance located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Closed — Violation closed
  • B

    Repair, replace or provide an approved and operational smoke detecting device, installed in accordance with department of buildings rules and regulations defective, in the entire apartment located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • 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 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    Open — Invalid certification
  • B

    Properly repair the source and abate the evidence of a water leak at the ceiling, in the 1st room from east at south located at apt 2f, 2nd story, 1st apartment from east at south , section ''east''

    Aug 15, 2025 · Apt 2F

    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.

    Jun 5, 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 29, 2024

    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 3, 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 22, 2023

    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.

    Mar 20, 2023

    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 14, 2022

    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.

    Feb 18, 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 18, 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.

    Apr 5, 2021

    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 5, 2021

    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.

    Oct 12, 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 1, 2016

    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 6, 2015

    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.

    Feb 5, 2015

    Closed — Violation dismissed

DOB building violations · 0

No DOB violations on record

ECB violations · 0

No ECB violations on record

Complaints

  • Unsanitary condition

    Mold

    Aug 12, 2025 · Apt 2F

    Close
  • Paint/plaster

    Ceiling

    Aug 12, 2025 · Apt 2F

    Close
  • Paint/plaster

    Wall

    Aug 12, 2025 · Apt 2F

    Close
  • Paint/plaster

    Ceiling

    Aug 12, 2025 · Apt 2F

    Close
  • Water leak

    Heavy flow

    Aug 12, 2025 · Apt 2F

    Close
  • Unsanitary condition

    Pests

    Jul 17, 2019 · Apt 2F

    Close
  • Safety

    Carbon monoxide detector

    Jul 17, 2019 · Apt 2F

    Close
  • Safety

    Smoke detector

    Jul 17, 2019 · Apt 2F

    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 (C3)
Year built
1945
Floors
2
Residential units
4
Building area
4,623 ft²
Lot area
2,750 ft²
Zoning
R6
Community board
312
Council district
38
Block / lot
920 / 45
Assessed value
$475,650
Landmark / historic district
No

HPD registration #324640, last renewed Nov 10, 2025.

Questions about 4022 9 Avenue

Who owns 4022 9 Avenue?

The owner of record in NYC Department of City Planning PLUTO data is Wan Biu Liu.

Does 4022 9 Avenue have violations?

Yes. NYC HPD has recorded 53 housing violations at this property.

Is 4022 9 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 4022 9 Avenue built?

City records list 1945 as the year it was built.

How many apartments are in 4022 9 Avenue?

It has 4 residential units.

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