121 3 Street, Brooklyn
Inside a FEMA-mapped flood zone, this mixed residential and commercial building on 3 Street carries 0.58 FAR of unused residential development rights on record.
121 3 Street is a mixed residential and commercial building in Brooklyn, New York City (BBL 3004620051). The property is zoned M1-4/R7-2, on a 2,250 sq ft lot, with 4 floors and 7 residential units. It was built in 1920. The lot is inside a FEMA Special Flood Hazard Area.
Property facts
| BBL | 3004620051 |
|---|---|
| Borough | Brooklyn — Community District 6 |
| Neighborhood | Carroll Gardens-Cobble Hill-Gowanus-Red Hook |
| ZIP code | 11231 |
| Zoning district | M1-4/R7-2 |
| Building class | S5 — mixed residential and commercial building (what’s a building class?) |
| Land use | 04 — Mixed residential & commercial buildings |
| Lot area | 2,250 sq ft |
| Floors | 4 |
| Residential units | 7 |
| Year built | 1920 |
| FAR | 2.86 built · 3.44 max residential · 2 max commercial Learn: What is FAR? |
| Flood zone | In a FEMA Special Flood Hazard Area |
Public records
No open violations on record for this lot.
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.