110 William Street, Manhattan

An office building rising 31 floors on William Street, built in 1956, zoned C6-4.

110 William Street is an office building in Manhattan, New York City (BBL 1000770008). The property is zoned C6-4, on a 32,511 sq ft lot, with 31 floors and 46 residential units. It was built in 1956. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 2 open building violations for this lot as of 2026-07-05.

Property facts

BBL	1000770008
Borough	Manhattan — Community District 1
Neighborhood	Financial District-Battery Park City
ZIP code	10038
Zoning district	C6-4
Building class	O4 — office building (what’s a building class?)
Land use	05 — Commercial & office buildings
Lot area	32,511 sq ft
Floors	31
Residential units	46
Year built	1956
FAR	24.25 built · 10 max residential · 10 max commercial Learn: What is FAR?
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

1 open Department of Buildings violation
1 open ECB (OATH) violation
0 open Housing Preservation & Development violations
Façade safety filing status: UNSAFE (latest filing 2025-11-20)

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.