451 6th Avenue
451 6th Avenue in Park Slope, Brooklyn, has 60 open HPD violations, 6 of them class C, and no rent-stabilized units are on its tax bill, as of Oct 25, 2026. StreetSpy grade: F (49/100).
Mixed residential & commercial · 3 units · Built 1899
StreetSpy grade: F (Severe, 49/100)
- 200 open HPD violations per 10 units, about 20 per apartment. The grade is F for that alone.
- 6 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 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: Grade capped at F (60 open, 6 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
Housing code violations (HPD)
60 open violations: 6 class C (immediately hazardous), 37 class B, 17 class A. 1 issued in the last 12 months. 68 on record. Oldest open violation issued 2002-10-29. Newest violation issued 2026-04-30.
HPD recorded no violation closed here 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: Plumbing defect, bathroom. D26-16.01 ADM CODE REPAIR THE BROKEN OR DEFECTIVE CONNECTION WASH BASIN WASTE PIPE 2 STY APT 2 BATHROOM ER1. , SECTION '' '' (apt 2), issued 2008-05-27. HPD violation 961042
- Class C: No heat / heating defect (hallway). D26-17.10 ADM CODE POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDING'S HEATING SYSTEM 1 STY PUBLIC HALL & ON BOILER ROOM DOOR., issued 2008-05-27. HPD violation 961034
- Class C: Damaged plaster or paint, bathroom. D26-10.01 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR 2 STY APT 2 BATHROOM ER1. , SECTION '' '' (apt 2), issued 2008-05-27. HPD violation 961040
- Class C: Damaged plaster or paint, bathroom. D26-10.01 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR SOUTH WALL 2 STY APT 2 BATHROOM ER1. , SECTION '' '' (apt 2), issued 2008-05-27. HPD violation 961041
- Class C: Plumbing defect, bathroom. D26-16.01 ADM CODE REPAIR THE FLUSHING APPARATUS AND MAINTAIN SAME SO AS TO FLUSH EFFECTIVELY THE WATER CLOSET 2 STY APT 2 BATHROOM. , SECTION '' '' (apt 2), issued 2008-05-27. HPD violation 961043
- Class C: Leak or water damage, bathroom. D26-16.01 ADM CODE REPAIR THE LEAKY AND/OR DEFECTIVE WATER SUPPLY PIPE SHUT OFF VALVE UNDER WASHBASIN 2 STY APT BATHROOM ER1., issued 2008-05-27. HPD violation 961044
- Class B: Lighting defect (entrance). 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 A MINIMUM OF 100 WATTS OF INCANDESCENT LIGHT REQUIRED. AT FRONT AREAWAY, issued 2019-08-22. HPD violation 13238431
- Class B: Damaged plaster or paint (basement). D26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE PLASTERBOARD CLG CELLAR THRU OUT., issued 2008-05-27. HPD violation 961008
311 housing complaints
0 in the last 12 months, 0 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: Rebecca Malter. Managing agent: ANGEL L MARTINEZ. See the full portfolio.
Last HPD registration Dec 26, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.
Tax lot and city IDs
BBL 3010120005, HPD building ID 132058. HPD Online, ACRIS, DOB BIS.
Nearest subway
- 7 Av (F, G), 4 min walk
- 4 Av-9 St (R), 6 min walk
- 4 Av-9 St (F, G), 7 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 60 open (6 class C, 37 class B, 17 class A). 4 rent-impairing | −45 |
| 311 housing complaints (12 mo) | None | 0 |
| Bedbug reports (3 yr) | None reported | 0 |
| Executed evictions (3 yr) | None | 0 |
| Housing litigation | No open cases | 0 |
| Open DOB violations | None | 0 |
| Density cap | 200 per 10 units (about 20 per apartment). Grade capped at F: 100 or more open HPD violations per 10 units. | −6 |
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.