55 Prospect Street, Brooklyn
An office building on a 20,704 sq ft Brooklyn lot on Prospect Street, zoned M1-6, built in 1967.
55 Prospect Street is an office building in Brooklyn, New York City (BBL 3000630001). The property is zoned M1-6, on a 20,704 sq ft lot, with 10 floors and 48 residential units. It was built in 1967. The lot is not inside a FEMA Special Flood Hazard Area.
Property facts
| BBL | 3000630001 |
|---|---|
| Borough | Brooklyn — Community District 2 |
| Neighborhood | Downtown Brooklyn-DUMBO-Boerum Hill |
| ZIP code | 11201 |
| Zoning district | M1-6 |
| Building class | O6 — office building (what’s a building class?) |
| Land use | 05 — Commercial & office buildings |
| Lot area | 20,704 sq ft |
| Floors | 10 |
| Residential units | 48 |
| Year built | 1967 |
| FAR | 12.37 built · 0 max residential · 10 max commercial Learn: What is FAR? |
| Flood zone | Not 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.