440 West 21 Street, Manhattan

A 1931 educational facility on West 21 Street with 47 open violations on record across city enforcement files.

440 West 21 Street is an educational facility in Manhattan, New York City (BBL 1007180001). The property is zoned R7B, on a 77,773 sq ft lot, with 6 floors and 16 residential units. It was built in 1931. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 47 open building violations for this lot as of 2026-07-05.

Property facts

BBL	1007180001
Borough	Manhattan — Community District 4
Neighborhood	Chelsea-Hudson Yards
ZIP code	10011
Zoning district	R7B
Building class	W7 — educational facility (what’s a building class?)
Land use	08 — Public facilities & institutions
Lot area	77,773 sq ft
Floors	6
Residential units	16
Year built	1931
FAR	1.72 built · 3 max residential · 0 max commercial Learn: What is FAR?
Historic district	Chelsea Historic District
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

44 open Department of Buildings violations
3 open ECB (OATH) violations — $8,750 in penalties due
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.