3921 5th Avenue
3921 5th Avenue in Sunset Park, Brooklyn, has 68 open HPD violations, 10 of them class C, and 5 of 10 units are rent-stabilized, as of Oct 26, 2026. StreetSpy grade: D (55/100).
Mixed residential & commercial · 10 units · Built 1925
StreetSpy grade: D (Poor, 55/100)
- 10 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
- 8 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
- The owner has 5 buildings on record; 4 graded D or F.
- 5 of 10 units are rent-stabilized; 9 on the 2007 tax bill.
More open violations per unit than 9 in 10 Brooklyn buildings this size.
- Repairs: High (68 open, 10 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 (1 open DOB violation), records as of Oct 26, 2026
- Registration: Renewal not yet in city data, records as of Oct 3, 2026
Housing code violations (HPD)
68 open violations: 10 class C (immediately hazardous), 39 class B, 19 class A. 1 issued in the last 12 months. 111 on record. Oldest open violation issued 2015-10-22. Newest violation issued 2026-04-30.
HPD recorded no violation closed here in the last 12 months.
8 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: Mice, throughout the apartment, 4th floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 7, 4th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 7), issued 2024-07-22. HPD violation 17117565
- Class C: No heat / heating defect (boiler room). PROVIDE READY ACCESS TO BUILDINGS HEATING SYSTEM LOCKED DOOR AT BOILER ROOM, issued 2024-07-22. HPD violation 17117560
- Class C: Leak or water damage, ceiling, 1st room from the north, 4th floor. , 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK THE CEILING AND NORTH WALL IN THE 1st ROOM FROM NORTH LOCATED AT APT 7, 4th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 7), issued 2021-11-01. HPD violation 14641200
- Class C: Leak or water damage, ceiling, 2nd room from the north, 4th floor. REPAIR THE ROOF SO THAT IT WILL NOT LEAK AT THE CEILING AND WEST WALL IN THE 2nd ROOM FROM NORTH AT WEST LOCATED AT APT 7, 4th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 7), issued 2021-11-01. HPD violation 14641201
- Class C: Self-closing door not working, 4th floor. , 2007, 204.1 HMC CODE: ARRANGE AND MAKE SELF-CLOSING THE DOORS IN THE ENTRANCE LOCATED AT APT 7, 4th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 7), issued 2021-10-27. HPD violation 14641203
- Class C: Self-closing door not working, 4th floor. , 2007, 204.1 HMC CODE: ARRANGE AND MAKE SELF-CLOSING THE DOORS IN THE ENTRANCE LOCATED AT APT 7, 4th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 7), issued 2021-08-30. HPD violation 14506445
- Class C: Damaged plaster or paint, ceiling, kitchen, 3rd floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING IN THE KITCHEN LOCATED AT APT 5, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 5), issued 2018-09-24. HPD violation 12597939
- Class C: Leak or water damage, ceiling, kitchen, 3rd floor. , 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING IN THE KITCHEN LOCATED AT APT 5, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 5), issued 2018-09-24. HPD violation 12597947
311 housing complaints
0 in the last 12 months, 4 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: No bedbug filing on record for this year
- 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: No bedbug filing on record for this year
Buildings department (DOB)
1 open DOB violation, a Local Law violation issued before 2000. 1 DOB violation 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
5 of 10 units rent-stabilized as of 2024. Stabilized renewals: 0% for one year and 0% for two years under RGB Order #58 (Oct 1, 2026 to Sep 30, 2027).
Rent-stabilized units on city tax bills: 5 in 2024, 9 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.
Owner and management
Owner: MICHAEL MAZZA. This owner has 5 buildings on record, 4 graded D or F. See the full portfolio.
Last HPD registration Jul 17, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.
Tax lot and city IDs
BBL 3009130001, HPD building ID 130398. HPD Online, ACRIS, DOB BIS.
Nearest subway
- 36 St (D, N, R), 6 min walk
- 45 St (R), 7 min walk
- 9 Av (D), 12 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 68 open (10 class C, 39 class B, 19 class A). 8 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 | 1 open DOB violation, a Local Law violation issued before 2000 | 0 |
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.