639 4th Avenue

639 4th Avenue in Sunset Park, Brooklyn, has 18 open HPD violations, 1 of them class C, and no rent-stabilized units are on its tax bill, as of Oct 26, 2026. StreetSpy grade: B (79/100).

Mixed residential & commercial · 44 units · Built 2005

StreetSpy grade: B (Good, 79/100)

• 1 immediately hazardous violation open (the class that covers no heat, pests, lead paint and similar).
• The owner's bedbug filings report no infested units in the last 3 years.
• No rent-stabilized units on the tax bill. Increases aren't capped by stabilization, though Good Cause Eviction may still limit them.

Fewer open violations per unit than 5 in 10 Brooklyn buildings this size.

• Repairs: Medium (18 open, 1 class C), records as of Oct 26, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (Owner reported none, 3 yr), records as of Oct 28, 2026
• Safety: Clear (No open DOB violations), records as of Oct 26, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

18 open violations: 1 class C (immediately hazardous), 6 class B, 11 class A. 0 issued in the last 12 months. 29 on record. Oldest open violation issued 2010-01-05. Newest violation issued 2023-03-31. No new HPD violation has been issued here since 2023. Most of the open count is older violations that were never closed.

HPD recorded no violation closed here in the last 12 months.

• Class C: No heat / heating defect (hallway). POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDINGS HEATING SYSTEM .. AT PUBLIC HALL, 1st STORY, issued 2017-05-25. HPD violation 11797156
• Class B: Missing or broken smoke / CO detector, 9th floor. SECTION 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. LOCATED AT APT 9B, 9th STORY, APARTMENT AT NORTH (apt 9B), issued 2010-02-22. HPD violation 8292826
• Class B: Missing or broken smoke / CO detector, 9th floor. REPAIR OR REPLACE THE SMOKE DETECTOR DEFECTIVE LOCATED AT APT 9B, 9th STORY, APARTMENT AT NORTH (apt 9B), issued 2010-02-22. HPD violation 8292824
• Class B: No heat / heating defect, radiator on the east wall, 1st room from the north, 9th floor. PROPERLY REPAIR THE BROKEN OR DEFECTIVE ELECTRICAL RADIATOR AT EAST WALL IN THE 1st ROOM FROM NORTH AT EAST LOCATED AT APT 9B, 9th STORY, 2nd APARTMENT FROM WEST AT NORTH (apt 9B), issued 2010-02-22. HPD violation 8290223
• Class B: Mold, east wall, 1st room from the east, 9th floor. SECTION 27-2005 HMC:TRACE AND REPAIR THE SOURCE AND ABATE THE NUISANCE CONSISTING OF MOLD ... AT EAST WALL,4 SQ.FT. IN THE 1st ROOM FROM EAST AT NORTH LOCATED AT APT 9B, 9th STORY, APARTMENT AT NORTH (apt 9B), issued 2010-02-22. HPD violation 8292827
• Class B: Mold, east wall, 1st room from the north, 9th floor. SECTION 27-2005 HMC:TRACE AND REPAIR THE SOURCE AND ABATE THE NUISANCE CONSISTING OF MOLD ... AT EAST WALL APPROX 6 SQ. FT. IN THE 1st ROOM FROM NORTH AT EAST LOCATED AT APT 9B, 9th STORY, 2nd APARTMENT FROM WEST AT NORTH (apt 9B), issued 2010-02-22. HPD violation 8290224
• Class B: Floor or stair defect, 1st room from the north, 9th floor. PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE 1st ROOM FROM NORTH LOCATED AT APT 9B, 9th STORY, 2nd APARTMENT FROM NORTH AT EAST (apt 9B), issued 2010-01-05. HPD violation 8213663
• Class A: Floor or stair defect (hallway). , M/D LAW AND DEPT. RULES AND REGS. PROVIDE A COMPLETED CERTIFICATE OF INSPECTION VISITS IN A PROPER FRAME AT OR NEAR MAILBOXES, BOTTOM EDGE OF FRAME BETWEEN 48-62 INCHES ABOVE FLOOR FRAME MISSING. AT PUBLIC HALL, 1st STORY, issued 2017-06-29. HPD violation 11852438

311 housing complaints

2 in the last 12 months, 7 in 5 years. Most common: Door/Window (1), Plumbing (1).

Bedbugs

The owner reported 0 infested units in the last 3 years of filings. 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: Owner reported 0 infested units
• 2024: Owner reported 0 infested units
• 2023: No bedbug filing on record for this year
• 2022: No bedbug filing on record for this year
• 2021: Owner reported 0 infested units

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 (1 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

No rent-stabilized units on the tax bill.

Owner and management

Owner: 639 4TH AVE LLC. Head officer: MUFEED SIAD. Managing agent: 639 4TH AVE LLC. This owner has 2 buildings on record, 0 graded D or F. See the full portfolio.

Last HPD registration Jul 2, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3006377501, HPD building ID 898682. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Prospect Av (R), 3 min walk
• 25 St (R), 6 min walk
• 4 Av-9 St (F, G), 11 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.