41 Underhill Avenue
41 Underhill Avenue in Prospect Heights, Brooklyn, has 8 open HPD violations, 3 of them class C, and 12 of 12 units are rent-stabilized, as of Oct 26, 2026. StreetSpy grade: C (70/100).
Multi-family walk-up · 12 units · Built 1931
StreetSpy grade: C (Fair, 70/100)
- 3 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
- The head officer on this registration is named on 16 buildings' registrations; 8 graded D or F.
- The owner's bedbug filings report no infested units in the last 3 years.
- 12 of 12 units are rent-stabilized.
More open violations per unit than 5 in 10 Brooklyn buildings this size.
- Repairs: Medium (8 open, 3 class C), records as of Oct 26, 2026
- Heat and hot water: 1 complaint, 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)
8 open violations: 3 class C (immediately hazardous), 2 class B, 2 class A, 1 class I (HPD orders such as lead paint or heat orders, not a hazard class). 0 issued in the last 12 months. 22 on record. Oldest open violation issued 1983-01-03. Newest violation issued 2025-06-12.
HPD recorded no violation closed here in the last 12 months.
- Class C: Self-closing door not working, 1st 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 1B, 1st STORY, 1st APARTMENT FROM NORTH AT EAST (apt 1B), issued 2024-10-15. HPD violation 17343361
- Class C: Mice, throughout the apartment, 1st floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 1B, 1st STORY, 1st APARTMENT FROM NORTH AT EAST (apt 1B), issued 2024-07-01. HPD violation 17077637
- 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 1B, 1st STORY, 1st APARTMENT FROM NORTH AT EAST (apt 1B), issued 2024-07-01. HPD violation 17077636
- Class B: Fire escape defect. , 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES AIRCONDITIONER PROTRUDING BEYOND WINDOW SILL AT 3RD STORY BUILDING FRONT, issued 2023-08-18. HPD violation 16167381
- Class B: Fire escape defect. , 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES AIRCONDITIONER PROTRUDING BEYOND WINDOW SILL AT 2ND STORY BUILDING FRONT, issued 2023-08-18. HPD violation 16167382
- Class A: Fire escape defect. M/D LAW FILE PLANS AND APPLICATION AND LEGALIZE THE FOLLOWING ALTERATION OR RESTORE TO THE LEGAL CONDITION EXISTING PRIOR TO THE MAKING OF SAID ALTERATION EXTENDING BALCONIES AT ALL STORIES, BUILDING FRONT AT FIRE ESCAPE, issued 2017-09-01. HPD violation 11953538
- Class A: Fire escape defect. M/D LAW FILE PLANS AND APPLICATION AND LEGALIZE THE FOLLOWING ALTERATION OR RESTORE TO THE LEGAL CONDITION EXISTING PRIOR TO THE MAKING OF SAID ALTERATION EXTENDING BALCONIES AT ALL STORIES, BUILDING REAR AT FIRE ESCAPE, issued 2017-09-01. HPD violation 11953540
- Class I: Vacate order. D26-35.01 ADM CODE THE PREMISES HAVE BEEN VACATED BY AN ORDER OF THIS DEPARTMENT AND CANNOT BE REOCCUPIED EXCEPT FOR CARETAKER UNTIL A NEW CERTIFICATE OF OCCUPANCY HAS BEEN OBTAINED., issued 1983-01-03. HPD violation 3315162
311 housing complaints
1 in the last 12 months, 24 in 5 years. Most common: Heat/Hot Water (1).
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 1 infested, 1 treated, 0 re-infested
Buildings department (DOB)
1 open DOB violation, a Local Law violation issued before 2000. 4 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
12 of 12 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: 12 in 2024, 12 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.
Owner and management
Owner: UNDERHILL AVENUE ASSOCIATIE LLC. Head officer: JEFFREY D GRONER. Managing agent: JEANS MANAGEMENT LLC. This owner has 16 buildings on record, 8 graded D or F. See the full portfolio.
Last HPD registration Oct 30, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.
Tax lot and city IDs
BBL 3011310003, HPD building ID 809710. HPD Online, ACRIS, DOB BIS.
Nearest subway
- Clinton-Washington Avs (C), 5 min walk
- Franklin Av (C), 9 min walk
- 7 Av (B, Q), 9 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 8 open (3 class C, 2 class B, 2 class A, 1 class I) | −27 |
| 311 housing complaints (12 mo) | 1 | −3 |
| 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.