320 East 51 Street, Manhattan
A 1899 office building on East 51 Street carrying 2.39 FAR of unused residential development rights on record under its R8B zoning.
320 East 51 Street is an office building in Manhattan, New York City (BBL 1013430043). The property is zoned R8B, on a 2,640 sq ft lot, with 3 floors and 1 residential units. It was built in 1899. The lot is not inside a FEMA Special Flood Hazard Area.
Property facts
| BBL | 1013430043 |
|---|---|
| Borough | Manhattan — Community District 6 |
| Neighborhood | East Midtown-Turtle Bay |
| ZIP code | 10022 |
| Zoning district | R8B |
| Building class | O2 — office building (what’s a building class?) |
| Land use | 05 — Commercial & office buildings |
| Lot area | 2,640 sq ft |
| Floors | 3 |
| Residential units | 1 |
| Year built | 1899 |
| FAR | 1.61 built · 4 max residential · 0 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.