3521 Neptune Avenue
A 24-story building with 334 apartments, built in 1974, in Brooklyn, NY 11224.
Addresses on the lot: 3325 Neptune Avenue, 3395 Neptune Avenue, 3405 Neptune Avenue, 3415 Neptune Avenue, 2750 to 2758 West 33rd Street, 2770 West 33rd Street.
HPD records as of October 25, 2026
3521 Neptune Avenue has 106 open HPD violations, 41 of them immediately hazardous. Tenants made 63 complaints to HPD in the past year, 10 about heat or hot water. It is registered to CONEY ISLAND SITE 4A2 HOUSES INC.
Does 3521 Neptune Avenue have open violations?
Yes: 106 open violations as of October 25, 2026. HPD sorts them by how soon the owner must fix them:
| Class | Deadline | Open |
|---|---|---|
| C, immediately hazardous | 24 hours for most | 41 |
| B, hazardous | 30 days | 43 |
| A, non-hazardous | About 90 days | 22 |
It has an open class C violation, as 56% of NYC buildings with 100 or more apartments do. More on buildings by size
Of the violations HPD wrote here in the past year, 16 have been closed.
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made 63 complaints to HPD in the 12 months to October 25, 2026, 10 of them about heat or hot water. Complaints reach HPD through 311; an inspector may then write a violation.
Among NYC buildings with 100 or more apartments, 72% had at least one complaint to HPD in the past year, and 57% had one about heat or hot water.
Every complaint on HPD Online ↗ · Noise complaints go to 311, not HPD
Who owns 3521 Neptune Avenue?
3521 Neptune Avenue is registered with HPD to CONEY ISLAND SITE 4A2 HOUSES INC. The registration also names a head officer and a managing agent, the people HPD contacts about the building.
The registration on HPD Online ↗ · The owner’s other buildings, on Who Owns What ↗ · Deeds and mortgages (ACRIS) ↗ · How to find who owns a building
Housing court and evictions
None in the past five years. HPD’s record has 16 older cases, the latest from 2019.
City marshals carried out 53 evictions here in the five years to May 30, 2026.
For comparison, 3% of residential buildings in 11224 had a housing court case in the past five years.
Is 3521 Neptune Avenue rent stabilized?
No rent-stabilized apartments were registered here from 2018 to 2023. That doesn’t prove there are none: some owners don’t register them.
How to check if an apartment is rent stabilized
Scores out of ten, from today’s records
Score this buildingThe address check reads the latest complaints and violations and scores the building, the landlord, the noise on the block and the walk to the subway. On a StreetEasy listing, the Chrome extension adds light for the floor and value for the rent.
Buildings nearby
- 2760 West 33rd Street200 apartments, built 2019
- 3385 Neptune Avenue338 apartments, built 1975
- 2730 West 33rd Street150 apartments, built 1965
- 2719 West 33rd Street634 apartments, built 1963
- 3202 Neptune Avenue252 apartments, built 1968
- 3302 Bay View Avenue88 apartments, built 1965
HPD violations, complaints, registrations and housing court cases as of October 25, 2026; evictions and rent-stabilized counts as of May 30, 2026; size and age from the city’s PLUTO. All from NYC Open Data. Public records, not legal advice. Tax lot 3-06979-0100.