450 West 123 Street, Manhattan
A 1955 elevator apartment building on West 123 Street with 21 open violations on record across city enforcement files.
450 West 123 Street is an elevator apartment building in Manhattan, New York City (BBL 1019640001). The property is zoned R7-2, on a 339,250 sq ft lot, with 21 floors and 814 residential units. It was built in 1955. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 21 open building violations for this lot as of 2026-07-05.
Property facts
| BBL | 1019640001 |
|---|---|
| Borough | Manhattan — Community District 9 |
| Neighborhood | Morningside Heights |
| Zoning district | R7-2 |
| Building class | D7 — elevator apartment building (what’s a building class?) |
| Land use | 04 — Mixed residential & commercial buildings |
| Lot area | 339,250 sq ft |
| Floors | 21 |
| Residential units | 814 |
| Year built | 1955 |
| FAR | 2.08 built · 3.44 max residential · 0 max commercial Learn: What is FAR? |
| Flood zone | Not in a FEMA Special Flood Hazard Area |
Public records
- 1 open Department of Buildings violation
- 2 open ECB (OATH) violations
- 18 open Housing Preservation & Development violations
- Façade safety filing status: SWARMP (latest filing 2026-04-02)
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.