298 Classon Avenue, Brooklyn
A 1890 government building on Classon Avenue rising 3 floors, zoned R7-1, with 1.58 FAR of unused residential development rights on record.
298 Classon Avenue is a government building in Brooklyn, New York City (BBL 3019330121). The property is zoned R7-1, on a 10,000 sq ft lot, with 3 floors. It was built in 1890. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 1 open building violation for this lot as of 2026-07-05.
Property facts
| BBL | 3019330121 |
|---|---|
| Borough | Brooklyn — Community District 2 |
| Neighborhood | Clinton Hill |
| ZIP code | 11205 |
| Zoning district | R7-1 |
| Building class | Y2 — government building (what’s a building class?) |
| Land use | 08 — Public facilities & institutions |
| Lot area | 10,000 sq ft |
| Floors | 3 |
| Residential units | 0 |
| Year built | 1890 |
| FAR | 1.86 built · 3.44 max residential · 0 max commercial Learn: What is FAR? |
| Flood zone | Not in a FEMA Special Flood Hazard Area |
Public records
- 1 open Department of Buildings violation
- 0 open ECB (OATH) violations
- 0 open Housing Preservation & Development violations
Violation counts as of 2026-07-05.
Absence of a record means none on file in NYC municipal records — not a certification of compliance.
The complete dossier also covers:
- Buildable floor area (residential & commercial)
- Recorded ownership & last sale
- Recorded mortgages & open debt stack
- LL97 carbon exposure by compliance period
- Flood coverage percentage & base flood elevation
- Climate projections for this lot
- Open permits & construction pipeline
- Distress signal convergence
- Air rights & transferable development rights
- Comparable sales (Pro)
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Data: NYC municipal records (Departments of City Planning, Buildings, Finance) and FEMA. See our sources and methodology. Data as of 2026-07-11.