721 Hart Street, Brooklyn

A 2017 elevator apartment building on Hart Street with 12 open violations on record across city enforcement files.

721 Hart Street is an elevator apartment building in Brooklyn, New York City (BBL 3032180042). The property is zoned R6, on a 10,000 sq ft lot, with 5 floors and 33 residential units. It was built in 2017. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 12 open building violations for this lot as of 2026-07-05.

Property facts

BBL	3032180042
Borough	Brooklyn — Community District 4
Neighborhood	Bushwick (West)
Zoning district	R6
Building class	D6 — elevator apartment building (what’s a building class?)
Land use	04 — Mixed residential & commercial buildings
Lot area	10,000 sq ft
Floors	5
Residential units	33
Year built	2017
FAR	2.66 built · 2.43 max residential · 0 max commercial Learn: What is FAR?
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

2 open Department of Buildings violations
1 open ECB (OATH) violation — $12,500 in penalties due
9 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)

Run a free lookupFree account — no card required

See plans & the one-time dossier

Watch this propertyAlerts on new permits, violations & sales

Nearby on this block

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