20 8 Avenue, Brooklyn

A 1883 walk-up apartment building on 8 Avenue with 37 open violations on record across city enforcement files.

20 8 Avenue is a walk-up apartment building in Brooklyn, New York City (BBL 3010590045). The property is zoned R7B, on a 2,500 sq ft lot, with 4 floors and 9 residential units. It was built in 1883. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 37 open building violations for this lot as of 2026-07-05.

Property facts

BBL	3010590045
Borough	Brooklyn — Community District 6
Neighborhood	Park Slope
ZIP code	11217
Zoning district	R7B
Building class	C6 — walk-up apartment building (what’s a building class?)
Land use	02 — Multi-family walk-up buildings
Lot area	2,500 sq ft
Floors	4
Residential units	9
Year built	1883
FAR	2.94 built · 3 max residential · 0 max commercial Learn: What is FAR?
Historic district	Park Slope Historic District
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

17 open Department of Buildings violations
1 open ECB (OATH) violation
19 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.