23 West 43 Street, Manhattan
A 1920 office building on West 43 Street with 319 residential units on record, zoned C6-4.5.
23 West 43 Street is an office building in Manhattan, New York City (BBL 1012590019). The property is zoned C6-4.5, on a 19,250 sq ft lot, with 20 floors and 319 residential units. It was built in 1920. The lot is not inside a FEMA Special Flood Hazard Area.
Property facts
| BBL | 1012590019 |
|---|---|
| Borough | Manhattan — Community District 5 |
| Neighborhood | Midtown-Times Square |
| ZIP code | 10036 |
| Zoning district | C6-4.5 |
| Building class | O4 — office building (what’s a building class?) |
| Land use | 05 — Commercial & office buildings |
| Lot area | 19,250 sq ft |
| Floors | 20 |
| Residential units | 319 |
| Year built | 1920 |
| FAR | 14.96 built · 10 max residential · 12 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.