2251 Knapp Street, Brooklyn

A 1953 elevator apartment building on Knapp Street with 73 open violations on record across city enforcement files.

2251 Knapp Street is an elevator apartment building in Brooklyn, New York City (BBL 3088210010). The property is zoned R5, on a 84,200 sq ft lot, with 6 floors and 162 residential units. It was built in 1953. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 73 open building violations for this lot as of 2026-07-05.

Property facts

BBL	3088210010
Borough	Brooklyn — Community District 15
Neighborhood	Sheepshead Bay-Manhattan Beach-Gerritsen Beach
ZIP code	11229
Zoning district	R5
Building class	D4 — elevator apartment building (what’s a building class?)
Land use	03 — Multi-family elevator buildings
Lot area	84,200 sq ft
Floors	6
Residential units	162
Year built	1953
FAR	2.07 built · 1.5 max residential · 0 max commercial Learn: What is FAR?
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

4 open Department of Buildings violations
1 open ECB (OATH) violation
68 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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Nearby on this block

2209 Knapp Street

Data: NYC municipal records (Departments of City Planning, Buildings, Finance) and FEMA. See our sources and methodology. Data as of 2026-07-11.