3521 NEPTUNE AVENUE
3521 NEPTUNE AVENUE is a Class D6 (elevator, pre-1929) building in Brooklyn (BBL 3069790100) built in 1974, with 335 residential units across 24 floors.
The building is in NYC community district 313, council district 47, zoning district R6, on a 165,454-square-foot lot with a building footprint of 366,000 square feet.
The current registered owner of record per NYC PLUTO is HP BAY PARK I PRESERVATION HOUSING COMPA NY, INC..
MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
The building is registered with NYC HPD's landlord-registration system and has no open HPD housing-maintenance code violations on record as of May 17, 2026.
Data sourced daily from NYC PLUTO (Department of City Planning), NYC ACRIS (Department of Finance), and NYC HPD housing-maintenance code violations.
Owner of record
HPD registered contacts
- Head OfficerADAM SUSSI
- Corporate OwnerCONEY ISLAND SITE 4A2 HOUSES INC
- Managing AgentGRENADIER REALTY MANAGEMENT
- Site ManagerCARLOS DURON
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R6
- Lot size:
- 165,454 sqft
- Building area:
- 366,000 sqft
- Floors:
- 24
- Assessed value:
- $13.6M
- Community district:
- 313
- Council district:
- 47
HPD violations
Recent HPD violation details
- Class CInspected Apr 15, 2026HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 1476FL, 17th STORY, 6th APARTMENT…
- Class AInspected Apr 15, 2026§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT ALL PEELING PAINT SURFACES IN THE FOYER , THE 11th…
- Class BInspected Apr 15, 2026§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... GREATER THAN 10 SQFT AT CEILING IN THE BATHROOM LOCATED…
- Class BInspected Apr 11, 2026§ 27-2005 HMC: REFIT THE DOOR AT 1ST CLOSET FROM EAST AT NORTH WALL IN THE 3rd ROOM FROM EAST LOCATED AT APT 1746 UPPER LEVEL, 17th STORY,…
- Class CInspected Apr 11, 2026§ 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE HYDRONIC BASEBOARD HEATER MISSING COVER IN THE FOYER LOCATED AT APT 1746,…
Recent ACRIS activity
Frequently asked questions about 3521 NEPTUNE AVENUE
Who owns 3521 NEPTUNE AVENUE?
The current registered owner of record for 3521 NEPTUNE AVENUE per NYC PLUTO is HP BAY PARK I PRESERVATION HOUSING COMPA NY, INC.. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 3521 NEPTUNE AVENUE last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 3521 NEPTUNE AVENUE in the last 5 years of recorded NYC public-records data. NYC ACRIS coverage extends back to 1966; an absence in our 5-year window typically means either the BBL has not transacted recently, or the most recent recorded document is not a DEED type (such as a refinance rather than a sale).
How many HPD violations does 3521 NEPTUNE AVENUE have?
No open HPD housing-maintenance code violations are on record for 3521 NEPTUNE AVENUE as of May 17, 2026. The building is registered with NYC HPD's landlord-registration system. HPD violation data is pulled daily from the NYC Open Data violations feed.
What is the assessed value of 3521 NEPTUNE AVENUE?
NYC Department of Finance assesses 3521 NEPTUNE AVENUE at $13.60M for the current tax year. NYC assesses property at a fraction of estimated market value (the assessment ratio varies by tax class — 6% for tax class 1 one-to-three-family dwellings, approximately 45% for tax class 2 rental apartment buildings), so the market value implied by this assessment is meaningfully higher. Assessment data is published by NYC Department of Finance.
What building class is 3521 NEPTUNE AVENUE and what does that mean?
3521 NEPTUNE AVENUE is NYC building class D6 — Elevator, pre-1929. A pre-1929 elevator apartment building. Building class is assigned by NYC Department of Finance and recorded in PLUTO; it determines the property's tax class and the regulatory regime that applies.