4022 9th Avenue

4022 9th Avenue in Sunset Park, Brooklyn, has 37 open HPD violations, 3 of them class C, and no rent-stabilized units are on its tax bill, as of Oct 25, 2026. StreetSpy grade: D (55/100).

Multi-family walk-up · 4 units · Built 1945

StreetSpy grade: D (Poor, 55/100)

• 3 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• 4 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• No housing complaints to 311 in the last 12 months.
• No rent-stabilized units on the tax bill. Increases aren't capped by stabilization, though Good Cause Eviction may still limit them.

More open violations per unit than 9 in 10 Brooklyn buildings this size.

• Repairs: High (37 open, 3 class C), records as of Oct 25, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (No bedbug filing, 3 yr), records as of Oct 27, 2026
• Safety: Clear (No open DOB violations), records as of Oct 23, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

37 open violations: 3 class C (immediately hazardous), 18 class B, 16 class A. 2 issued in the last 12 months. 53 on record. Oldest open violation issued 2009-08-13. Newest violation issued 2026-04-30.

0 closed in the last 90 days. Median 120 days from issue to close for the 6 violations closed in the last 12 months.

4 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.

• Class C: Self-closing door not working (hallway). , 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: 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, issued 2025-08-19. HPD violation 18161655
• Class C: Door, lock or intercom defect (entrance). , 2007 ADM CODE REMOVE THE ILLEGAL FASTENING DOUBLE CYLINDER KEY OPERATED LOCK INSTALLED AT THE FRONT ENTRANCE DOOR TO BUILDING, , 1st STORY, SECTION ''EAST'', issued 2025-08-19. HPD violation 18161667
• Class C: Self-closing door not working (hallway). , 2007 ADM CODE REMOVE DEVICE PREVENTING DOOR FROM BEING SELF-CLOSING PLASTIC WEDGE JAMMED THE ENTRANCE DOOR TO PUBLIC HALL STAIRS AT PUBLIC HALL, 1st STORY, issued 2025-08-19. HPD violation 18161656
• Class B: Mold, bathroom, 2nd floor. HMC: 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). (apt 2F), issued 2025-12-17. HPD violation 18520531
• Class B: Fire escape defect. , 2007 ADM CODE 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, issued 2025-08-20. HPD violation 18167720
• Class B: Mold, 1st room from the east, 2nd floor. HMC: 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'' (apt 2F), issued 2025-08-19. HPD violation 18161635
• Class B: Missing or broken smoke / CO detector, throughout the apartment, 2nd floor. (B)(1)(A) HMC, § 12-01, § 12-03 RCNY 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'' (apt 2F), issued 2025-08-19. HPD violation 18161650
• Class B: Damaged plaster or paint, ceiling. PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE FIRE RETARDANT MATERIALS AT THE CEILING, AT PUBLIC HALL, 2nd STORY, issued 2025-08-19. HPD violation 18161661

311 housing complaints

0 in the last 12 months, 5 in 5 years.

Bedbugs

No bedbug filing on record for the last 3 years. HPD's bedbug filings are self-reported by the owner once a year; HPD does not inspect to confirm them.

• 2026: No bedbug filing on record for this year
• 2025: No bedbug filing on record for this year
• 2024: No bedbug filing on record for this year
• 2023: No bedbug filing on record for this year
• 2022: No bedbug filing on record for this year
• 2021: No bedbug filing on record for this year

Buildings department (DOB)

No open DOB violations. 0 DOB violations on record. Check on DOB BIS.

Evictions and housing court

0 executed evictions in the last 3 years (0 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

No rent-stabilized units on the tax bill.

Owner and management

Owner: Wan B Liu. Managing agent: Andy Yang. See the full portfolio.

Last HPD registration Nov 10, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3009200045, HPD building ID 135071. HPD Online, ACRIS, DOB BIS.

Nearest subway

• 9 Av (D), 3 min walk
• Fort Hamilton Pkwy (D), 6 min walk
• 50 St (D), 12 min walk

How the grade is calculated

Sources: NYC HPD Housing Maintenance Code Violations, NYC 311 Service Requests, NYC HPD Bedbug Reporting, NYC Marshal Evictions (DOI), NYC HPD Housing Litigations, NYC DOB Violations, NYC DOF tax bills (via JustFix Who Owns What portfolio API, v2), NYC HPD Property Registration. Methodology. Report generated 2026-10-28.