516 West 20 Street, Manhattan
Inside a FEMA-mapped flood zone, this office building on West 20 Street carries 0.73 FAR of unused commercial development rights on record.
516 West 20 Street is an office building in Manhattan, New York City (BBL 1006910043). The property is zoned C6-2, on a 16,100 sq ft lot, with 7 floors and 2 residential units. It was built in 1914. The lot is inside a FEMA Special Flood Hazard Area. NYC municipal records show 4 open building violations for this lot as of 2026-07-05.
Property facts
| BBL | 1006910043 |
|---|---|
| Borough | Manhattan — Community District 4 |
| Neighborhood | Chelsea-Hudson Yards |
| ZIP code | 10011 |
| Zoning district | C6-2 |
| Building class | O3 — office building (what’s a building class?) |
| Land use | 05 — Commercial & office buildings |
| Lot area | 16,100 sq ft |
| Floors | 7 |
| Residential units | 2 |
| Year built | 1914 |
| FAR | 5.27 built · 6.02 max residential · 6 max commercial Learn: What is FAR? |
| Flood zone | In a FEMA Special Flood Hazard Area |
Public records
- 4 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)
Nearby on this block
Data: NYC municipal records (Departments of City Planning, Buildings, Finance) and FEMA. See our sources and methodology. Data as of 2026-07-11.