454 West 20 Street, Manhattan
A 1853 walk-up apartment building in the Chelsea Historic District historic district, on West 20 Street, zoned R7B.
454 West 20 Street is a walk-up apartment building in Manhattan, New York City (BBL 1007170071). The property is zoned R7B, on a 1,533 sq ft lot, with 4 floors and 4 residential units. It was built in 1853. The lot is not inside a FEMA Special Flood Hazard Area.
Property facts
| BBL | 1007170071 |
|---|---|
| Borough | Manhattan — Community District 4 |
| Neighborhood | Chelsea-Hudson Yards |
| ZIP code | 10011 |
| Zoning district | R7B |
| Building class | C6 — walk-up apartment building (what’s a building class?) |
| Land use | 02 — Multi-family walk-up buildings |
| Lot area | 1,533 sq ft |
| Floors | 4 |
| Residential units | 4 |
| Year built | 1853 |
| FAR | 2.29 built · 3 max residential · 0 max commercial Learn: What is FAR? |
| Historic district | Chelsea Historic District |
| 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.