670 Park Avenue, Manhattan

A 1919 office building on Park Avenue carrying 6.55 FAR of unused residential development rights on record under its R10 zoning.

670 Park Avenue is an office building in Manhattan, New York City (BBL 1013820037). The property is zoned R10, on a 6,025 sq ft lot, with 7 floors and 2 residential units. It was built in 1919. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 1 open building violation for this lot as of 2026-07-05.

Property facts

BBL	1013820037
Borough	Manhattan — Community District 8
Neighborhood	Upper East Side-Carnegie Hill
ZIP code	10065
Zoning district	R10
Building class	O3 — office building (what’s a building class?)
Land use	05 — Commercial & office buildings
Lot area	6,025 sq ft
Floors	7
Residential units	2
Year built	1919
FAR	3.45 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

1 open Department of Buildings violation
0 open ECB (OATH) violations
0 open Housing Preservation & Development violations

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.