721 Park Avenue, Manhattan
An indoor public assembly building on Park Avenue carrying 4.36 FAR of unused residential development rights on record on a 9,037 sq ft lot, zoned R10.
721 Park Avenue is an indoor public assembly building in Manhattan, New York City (BBL 1014050001). The property is zoned R10, on a 9,037 sq ft lot, with 7 floors and 1 residential units. It was built in 1979. The lot is not 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 | 1014050001 |
|---|---|
| Borough | Manhattan — Community District 8 |
| Neighborhood | Upper East Side-Carnegie Hill |
| Zoning district | R10 |
| Building class | P7 — indoor public assembly building (what’s a building class?) |
| Land use | 08 — Public facilities & institutions |
| Lot area | 9,037 sq ft |
| Floors | 7 |
| Residential units | 1 |
| Year built | 1979 |
| FAR | 5.64 built · 10 max residential · 0 max commercial Learn: What is FAR? |
| Historic district | Upper East Side Historic District |
| Flood zone | Not 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
- Façade safety filing status: SAFE (latest filing 2025-12-17)
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.