861 Madison Avenue, Manhattan
A 1924 house of worship in the Upper East Side Historic District historic district, on Madison Avenue, zoned C5-1.
861 Madison Avenue is a house of worship in Manhattan, New York City (BBL 1013860021). The property is zoned C5-1, on a 18,388 sq ft lot, with 2 floors and 4 residential units. It was built in 1924. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 7 open building violations for this lot as of 2026-07-05.
Property facts
| BBL | 1013860021 |
|---|---|
| Borough | Manhattan — Community District 8 |
| Neighborhood | Upper East Side-Carnegie Hill |
| ZIP code | 10021 |
| Zoning district | C5-1 |
| Building class | M1 — house of worship (what’s a building class?) |
| Land use | 08 — Public facilities & institutions |
| Lot area | 18,388 sq ft |
| Floors | 2 |
| Residential units | 4 |
| Year built | 1924 |
| FAR | 2.01 built · 10 max residential · 4 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
- 7 open Department of Buildings violations
- 0 open ECB (OATH) violations
- 0 open Housing Preservation & Development violations
- Façade safety filing status: SWARMP (latest filing 2022-02-15)
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)
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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.