3521 Neptune Avenue

3521 Neptune Avenue in Coney Island, Brooklyn, has 164 open HPD violations, 66 of them class C, and no rent-stabilized units are on its tax bill, as of Oct 25, 2026. StreetSpy grade: F (35/100).

Mixed residential & commercial · 334 units · Built 1974

StreetSpy grade: F (Severe, 35/100)

• 66 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• 4 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• 10 heat or hot water complaints to 311 in the last 12 months.
• No rent-stabilized units on the tax bill. Increases aren't capped by stabilization, though Good Cause Eviction may still limit them.

More open violations per unit than 6 in 10 Brooklyn buildings this size.

• Repairs: High (164 open, 66 class C), records as of Oct 25, 2026
• Heat and hot water: 10 complaints, 12 mo, records as of Oct 25, 2026
• Pests: High (277 infested units, 3 yr, re-infested), records as of Oct 27, 2026
• Safety: Clear (8 open DOB violations), records as of Oct 23, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

164 open violations: 66 class C (immediately hazardous), 72 class B, 25 class A, 1 class I (HPD orders such as lead paint or heat orders, not a hazard class). 130 issued in the last 12 months. 1521 on record. Oldest open violation issued 2017-06-20. Newest violation issued 2026-10-01.

11 closed in the last 90 days. Median 146 days from issue to close for the 107 violations closed in the last 12 months.

4 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: Gas defect, kitchen, 9th floor. PROVIDE AN ADEQUATE SUPPLY OF GAS TO THE FIXTURES AT RANGE IN THE KITCHEN LOCATED AT APT 948, 9th STORY, 12th APARTMENT FROM NORTH AT EAST (apt 948), issued 2026-10-01. HPD violation 19261869
• Class C: Mice, throughout the apartment, 9th floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 948, 9th STORY, 12th APARTMENT FROM NORTH AT EAST (apt 948), issued 2026-10-01. HPD violation 19261865
• Class C: Self-closing door not working, 9th 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 948, 9th STORY, 12th APARTMENT FROM NORTH AT EAST (apt 948), issued 2026-10-01. HPD violation 19261867
• Class C: Roaches, throughout the apartment, 9th floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 909, 9th STORY, 7th APARTMENT FROM WEST AT NORTH (apt 909), issued 2026-09-30. HPD violation 19252701
• Class C: Mice, throughout the apartment, 5th floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 520, 5th STORY, 1st APARTMENT FROM NORTH AT EAST (apt 520), issued 2026-09-21. HPD violation 19223055
• Class C: Roaches, throughout the apartment, 9th floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 948, 9th STORY, 12th APARTMENT FROM NORTH AT EAST (apt 948), issued 2026-09-18. HPD violation 19223087
• Class C: Mice, throughout the apartment, 9th floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 948, 9th STORY, 12th APARTMENT FROM NORTH AT EAST (apt 948), issued 2026-09-18. HPD violation 19223086
• Class C: Self-closing door not working. , 2007 ADM CODE REMOVE DEVICE PREVENTING DOOR FROM BEING SELF-CLOSING CONSISTING OF A CHAIR AT LAUNDRY ROOM, 1st STORY, issued 2026-09-14. HPD violation 19202419

311 housing complaints

56 in the last 12 months, 362 in 5 years. Most common: Unsanitary Condition (32), Heat/Hot Water (10), Paint/Plaster (6), Door/Window (5), Plumbing (3).

Bedbugs

The owner reported 277 infested units in the last 3 years, including re-infestations. 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 269 infested, 2 treated, 0 re-infested
• 2024: Owner reported 4 infested, 4 treated, 4 re-infested
• 2023: Owner reported 4 infested, 4 treated, 0 re-infested
• 2022: Owner reported 3 infested, 3 treated, 0 re-infested
• 2021: Owner reported 5 infested, 5 treated, 5 re-infested

Buildings department (DOB)

8 open DOB violations, all 8 Local Law violations issued before 2000. 13 DOB violations on record. Check on DOB BIS.

Evictions and housing court

54 executed evictions in the last 3 years (91 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

No rent-stabilized units on the tax bill.

Owner and management

Owner: CONEY ISLAND SITE 4A2 HOUSES INC. Head officer: ADAM SUSSI. Managing agent: GRENADIER REALTY MANAGEMENT. This owner has 6 buildings on record, 5 graded D or F. See the full portfolio.

Last HPD registration Sep 3, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3069790100, HPD building ID 808926. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Coney Island-Stillwell Av (D, F, N, Q), 21 min walk
• Bay 50 St (D), 24 min walk
• W 8 St-NY Aquarium (F, Q), 27 min walk

How the grade is calculated

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.