29 West 21st Street, Manhattan
A 1910 condominium on West 21st Street carrying 4.37 FAR of unused commercial development rights on record under its C6-4A zoning.
29 West 21st Street is a condominium in Manhattan, New York City (BBL 1008237508). The property is zoned C6-4A, on a 2,518 sq ft lot, with 7 floors and 7 residential units. It was built in 1910. The lot is not inside a FEMA Special Flood Hazard Area.
Property facts
| BBL | 1008237508 |
|---|---|
| Borough | Manhattan — Community District 5 |
| Neighborhood | Midtown South-Flatiron-Union Square |
| ZIP code | 10010 |
| Zoning district | C6-4A |
| Building class | RM — condominium (what’s a building class?) |
| Land use | 04 — Mixed residential & commercial buildings |
| Lot area | 2,518 sq ft |
| Floors | 7 |
| Residential units | 7 |
| Year built | 1910 |
| FAR | 5.63 built · 10 max residential · 10 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.