521 Brooklyn Avenue
521 Brooklyn Avenue in Prospect Lefferts Gardens, Brooklyn, has 4 open HPD violations, 2 of them class C, and its rent-stabilization status could not be verified, as of Oct 26, 2026. StreetSpy grade: D (57/100).
Mixed residential & commercial · 4 units · Built 1931
StreetSpy grade: D (Poor, 57/100)
- 2 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
- 3 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
- No housing complaints to 311 in the last 12 months.
More open violations per unit than 5 in 10 Brooklyn buildings this size.
- Repairs: High (4 open, 2 class C), records as of Oct 26, 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 28, 2026
- Safety: Medium (1 open DOB violation), records as of Oct 26, 2026
- Registration: Not on file, records as of Oct 3, 2026
Housing code violations (HPD)
4 open violations: 2 class C (immediately hazardous), 2 class B, 0 class A. 0 issued in the last 12 months. 4 on record. Oldest open violation issued 2009-08-13. Newest violation issued 2024-12-05.
HPD recorded no violation closed here in the last 12 months.
3 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: Fire escape defect. FIRE ESCAPE DEFECTIVE. PROPERLY SECURE FIFTH TREAD FROM BOTTOM UP FROM 2ND STORY TO 3RD STORY. AT FIRE ESCAPE, issued 2024-12-05. HPD violation 17437791
- Class C: Door, lock or intercom defect, 3rd floor. SECTION 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING DOUBLE CYLINDER KEY OPERATED LOCKS IN THE ENTRANCE LOCATED AT APT 2, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2), issued 2009-08-13. HPD violation 4462891
- Class B: Damaged plaster or paint, throughout the apartment, 3rd floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR WALLS AND CEILINGS THROUGHOUT IN THE ENTIRE APARTMENT LOCATED AT APT 2, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 2), issued 2009-08-13. HPD violation 4462865
- Class B: Leak or water damage (roof). REPAIR THE ROOF SO THAT IT WILL NOT LEAK OVER CEILING , ROOF, issued 2009-08-13. HPD violation 4462869
311 housing complaints
0 in the last 12 months, 3 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)
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
Stabilization status could not be verified.
Owner and management
Owner: TRIEFLER, SIDNEY M. See the full portfolio.
Tax lot and city IDs
BBL 3047930010, HPD building ID 214849. HPD Online, ACRIS, DOB BIS.
Nearest subway
- Sterling St (2, 5), 6 min walk
- Winthrop St (2, 5), 9 min walk
- President St-Medgar Evers College (2, 5), 10 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 4 open (2 class C, 2 class B). 3 rent-impairing | −40 |
| 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 | −3 |
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 Dept. of City Planning PLUTO (tax-roll owner). Methodology. Report generated 2026-10-28.