371 Flatbush Avenue Ext, Brooklyn
A 1929 condominium on Flatbush Avenue Ext carrying 4.7 FAR of unused commercial development rights on record under its C6-4 zoning.
371 Flatbush Avenue Ext is a condominium in Brooklyn, New York City (BBL 3020857501). The property is zoned C6-4, on a 43,080 sq ft lot, with 11 floors and 2 residential units. It was built in 1929. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 8 open building violations for this lot as of 2026-07-05.
Property facts
| BBL | 3020857501 |
|---|---|
| Borough | Brooklyn — Community District 2 |
| Neighborhood | Fort Greene |
| Zoning district | C6-4 |
| Building class | RA — condominium (what’s a building class?) |
| Land use | 08 — Public facilities & institutions |
| Lot area | 43,080 sq ft |
| Floors | 11 |
| Residential units | 2 |
| Year built | 1929 |
| FAR | 5.3 built · 10 max residential · 10 max commercial Learn: What is FAR? |
| Flood zone | Not in a FEMA Special Flood Hazard Area |
Public records
- 8 open Department of Buildings violations
- 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.