431 6th Street

431 6th Street in Park Slope, Brooklyn, has 13 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: D (55/100).

Multi-family walk-up · 3 units · Built 1910

StreetSpy grade: D (Poor, 55/100)

• 1 immediately hazardous violation open (the class that covers no heat, pests, lead paint and similar).
• 1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• The owner has 9 buildings on record; 5 graded D or F.
• 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 8 in 10 Brooklyn buildings this size.

• Repairs: High (13 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)

13 open violations: 1 class C (immediately hazardous), 8 class B, 4 class A. 0 issued in the last 12 months. 21 on record. Oldest open violation issued 2008-06-12. Newest violation issued 2025-06-05.

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

1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.

• Class C: Door, lock or intercom defect (entrance). D26-10.01 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF DOUBLE CYLINDER KEY OPERATED LOCK ENTRANCE DOOR STREET TO VESTIBULE., issued 2008-06-12. HPD violation 965877
• Class B: Electrical defect (hallway). D26-10.01 ADM CODE REPLACE WITH NEW THE MISSING ELECTRICAL WALL SWITCH COVER 1 STY PUBLIC HALL., issued 2008-06-12. HPD violation 965879
• Class B: Lighting defect (entrance). D26-19.07 ADM CODE PROVIDE ADEQUATE LIGHTING AT OR NEAR THE OUTSIDE OF THE FRONT ENTRANCEWAY OF THE BUILDING AND KEEP SAME BURNING FROM SUNSET EVERY DAY TO SUNRISE ON THE DAY FOLLOWING 50 WATTS NIGHT INSPECTION., issued 2008-06-12. HPD violation 965880
• Class B: Door, lock or intercom defect (entrance). D26-10.01 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF DOUBLE CYLINDER KEY OPERATED LOCK INSTALLED ENTRANCE DOOR TO BLDG., issued 2008-06-12. HPD violation 965881
• Class B: Sprinkler or standpipe defect (hallway). D26-10.01 ADM CODE REPLACE WITH NEW THE BROKEN OR DEFECTIVE PAINTED SPRINKLER HEADS ALL STYS PUBLIC HALL., issued 2008-06-12. HPD violation 965878
• Class B: Damaged plaster or paint (basement). D26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE PLASTERBOARD CELLAR CLG THRU OUT., issued 2008-06-12. HPD violation 965874
• Class B: No heat / heating defect (basement). SECTION 65 M/D LAW PROVIDE UNDER COMPLETED PERMIT, A PROPER ENCLOSURE FOR THE CENTRAL HEATING PLANT, CENTER CELLAR., issued 2008-06-12. HPD violation 965870
• Class B: Door, lock or intercom defect (hallway). D26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE MARBLE SADDLE ENTRANCE DOOR VESTIBULE 1 STY PUBLIC HALL., issued 2008-06-12. HPD violation 965876

311 housing complaints

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

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: Owner reported 0 infested units
• 2022: Owner reported 0 infested units
• 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 (0 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

No rent-stabilized units on the tax bill.

Owner and management

Owner: JOHN C WALSH. This owner has 9 buildings on record, 5 graded D or F. See the full portfolio.

Last HPD registration Sep 24, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3009890068, HPD building ID 132869. HPD Online, ACRIS, DOB BIS.

Nearest subway

• 7 Av (F, G), 5 min walk
• 4 Av-9 St (R), 8 min walk
• 4 Av-9 St (F, G), 9 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.