340 Prospect Avenue
340 Prospect Avenue in Windsor Terrace, Brooklyn, has 7 open HPD violations, and 6 of 6 units are rent-stabilized, as of Oct 26, 2026. StreetSpy grade: C (70/100).
Multi-family walk-up · 6 units · Built 1931
StreetSpy grade: C (Fair, 70/100)
- 7 open housing violations, none in the most serious class.
- No housing complaints to 311 in the last 12 months.
- The owner's bedbug filings report no infested units in the last 3 years.
- 6 of 6 units are rent-stabilized.
More open violations per unit than 6 in 10 Brooklyn buildings this size.
- Repairs: Medium (7 open), 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: Medium (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)
7 open violations: 0 class C (immediately hazardous), 4 class B, 3 class A. 0 issued in the last 12 months. 7 on record. Oldest open violation issued 2008-06-26. Newest violation issued 2008-06-26. No new HPD violation has been issued here since 2008. Most of the open count is older violations that were never closed.
HPD recorded no violation closed here in the last 12 months.
- Class B: Damaged plaster or paint, bathroom. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING AT STEAMPIPE 2 STY SOUTH APT 2L BATHROOM. , SECTION '' '' (apt 2L), issued 2008-06-26. HPD violation 1888194
- Class B: Self-closing door not working (hallway). D26-10.01, 10.05 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS VESTIBULE TO 1 STY PUBLIC HALL., issued 2008-06-26. HPD violation 1888192
- Class B: Floor or stair defect. PROPERLY REPAIR THE BROKEN OR DEFECTIVE WARPED WOOD FLOOR 2 STY SOUTH APT 2L. , SECTION '' '' (apt 2L), issued 2008-06-26. HPD violation 1888196
- Class B: Damaged plaster or paint (basement). D26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE PLASTERBOARD CEILING CELLAR REAR., issued 2008-06-26. HPD violation 1888190
- Class A: Door, lock or intercom defect (entrance). SECTION 300 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 NORTH ENTRANCE DOOR REMOVED & SEALED WITH PLYWOOD 1 STY WEST APT 1R. LOCATED AT APT 1R (apt 1R), issued 2008-06-26. HPD violation 1888193
- Class A: Damaged plaster or paint (hallway). D26-21.03 ADM CODE PAINT OR POST A SIGN INDICATING FLOORS ON WALLS AT OR NEAR STAIRS 2 & 3 STY PUBLIC HALL., issued 2008-06-26. HPD violation 1888191
- Class A: Damaged plaster or paint. PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT WALL & CEILING 2 STY SOUTH APT 2L THRU OUT. , SECTION '' '' (apt 2L), issued 2008-06-26. HPD violation 1888195
311 housing complaints
0 in the last 12 months, 0 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: 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)
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
6 of 6 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: 6 in 2024, 6 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.
Owner and management
Owner: CALDER REALTY,LLC. Head officer: JOSEPH CALDERONE. Managing agent: SJC SERVICE SOLUTIONS, INC.. This owner has 3 buildings on record, 0 graded D or F. See the full portfolio.
Last HPD registration Aug 21, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.
Tax lot and city IDs
BBL 3008680019, HPD building ID 356172. HPD Online, ACRIS, DOB BIS.
Nearest subway
- Prospect Av (R), 8 min walk
- 15 St-Prospect Park (F, G), 8 min walk
- 7 Av (F, G), 9 min walk
How the grade is calculated
| Factor | On record | Points |
|---|---|---|
| Open HPD violations | 7 open (4 class B, 3 class A) | −27 |
| 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 HPD Property Registration. Methodology. Report generated 2026-10-28.