521 Isham Street
521 Isham Street in Inwood, Manhattan, has 20 open HPD violations, 7 of them class C, and 60 of 60 units are rent-stabilized, as of Oct 24, 2026. StreetSpy grade: D (51/100).
Mixed residential & commercial · 60 units · Built 1930
StreetSpy grade: D (Poor, 51/100)
- 7 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
- 2 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
- 14 heat or hot water complaints to 311 in the last 12 months.
- 60 of 60 units are rent-stabilized; 59 on the 2007 tax bill.
More open violations per unit than 7 in 10 Manhattan buildings this size.
- Repairs: Medium (20 open, 7 class C), records as of Oct 24, 2026
- Heat and hot water: 14 complaints, 12 mo, records as of Oct 23, 2026
- Pests: Clear (Owner reported none, 3 yr), records as of Oct 26, 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)
20 open violations: 7 class C (immediately hazardous), 8 class B, 5 class A. 55 issued in the last 12 months. 231 on record. Oldest open violation issued 2012-07-06. Newest violation issued 2026-08-03.
27 closed in the last 90 days. Median 150 days from issue to close for the 58 violations closed in the last 12 months.
2 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: Self-closing door not working, 3rd floor. , 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES IN THE ENTRANCE LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST , SECTION AT SOUTH (apt 3B), issued 2026-08-03. HPD violation 19115082
- Class C: Mold, ceiling, bathroom, 3rd floor. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... GREATER THAN 30 SQFT AT CEILING, NORTH, WEST AND SOUTH WALLS IN THE BATHROOM LOCATED AT APT 3J, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH (apt 3J), issued 2026-07-27. HPD violation 19104424
- Class C: Damaged plaster or paint, east wall, 1st room from the north, 3rd floor. HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE UPPER WINDOW SASH GLASS AT EAST WALL. IN THE 1st ROOM FROM NORTH LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST (apt 3B), issued 2025-11-17. HPD violation 18369542
- Class C: Damaged plaster or paint, window sash on the south wall, 3rd room from the north, 3rd floor. HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE GLASS AT LOWER WINDOW SASH AT SOUTH WALL. IN THE 3rd ROOM FROM NORTH LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST (apt 3B), issued 2025-11-17. HPD violation 18369544
- Class C: Roaches, throughout the apartment, 3rd floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST (apt 3B), issued 2025-11-17. HPD violation 18369538
- Class C: Self-closing door not working, 4th floor. , 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE INOPERABLE HINGES IN THE ENTRANCE LOCATED AT APT 3B, 4th STORY, 1st APARTMENT FROM WEST AT NORTH (apt 3B), issued 2025-10-14. HPD violation 18288853
- Class C: Roaches, throughout the apartment, 1st floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 1G, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 1G), issued 2023-01-30. HPD violation 15686849
- Class B: Missing or broken smoke / CO detector, throughout the apartment, 4th floor. (B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 4G, 4th STORY, 1st APARTMENT FROM SOUTH AT WEST , SECTION AT NORTH (apt 4G), issued 2026-08-03. HPD violation 19115094
311 housing complaints
42 in the last 12 months, 108 in 5 years. Most common: Heat/Hot Water (14), Paint/Plaster (8), Unsanitary Condition (8), Door/Window (6), Plumbing (4).
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. 1 DOB violation on record. Check on DOB BIS.
Evictions and housing court
5 executed evictions in the last 3 years (5 on record). 0 open HPD cases; 0 harassment findings.
Rent stabilization
60 of 60 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: 60 in 2024, 59 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.
Owner and management
Owner: Isham 521, LLC. Head officer: Scott Silverman. Managing agent: Bronstein Properties LLC. This owner has 84 buildings on record, 39 graded D or F. See the full portfolio.
Last HPD registration Aug 20, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.
Tax lot and city IDs
BBL 1022280045, HPD building ID 23132. HPD Online, ACRIS, DOB BIS.
Nearest subway
- Inwood-207 St (A), 2 min walk
- 207 St (1), 3 min walk
- 215 St (1), 5 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 20 open (7 class C, 8 class B, 5 class A). 2 rent-impairing | −23 |
| 311 housing complaints (12 mo) | 42 | −20 |
| Bedbug reports (3 yr) | None reported | 0 |
| Executed evictions (3 yr) | 5 | −6 |
| Housing litigation | No open cases | 0 |
| Open DOB violations | None | 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 2026-10-27.