1634 1 Avenue, Manhattan

A 1962 elevator apartment building on 1 Avenue with 11 open violations on record across city enforcement files.

1634 1 Avenue is an elevator apartment building in Manhattan, New York City (BBL 1015640047). The property is zoned C1-9, on a 14,275 sq ft lot, with 20 floors and 200 residential units. It was built in 1962. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 11 open building violations for this lot as of 2026-07-05.

Property facts

BBL	1015640047
Borough	Manhattan — Community District 8
Neighborhood	Upper East Side-Yorkville
ZIP code	10028
Zoning district	C1-9
Building class	D4 — elevator apartment building (what’s a building class?)
Land use	03 — Multi-family elevator buildings
Lot area	14,275 sq ft
Floors	20
Residential units	200
Year built	1962
FAR	14.54 built · 10 max residential · 2 max commercial Learn: What is FAR?
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

5 open Department of Buildings violations
0 open ECB (OATH) violations
6 open Housing Preservation & Development violations
Façade safety filing status: SAFE (latest filing 2021-11-24)

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.