339 9 Street, Brooklyn

A 1925 mixed residential and commercial building on 9 Street with 6 residential units on record, zoned R6A.

339 9 Street is a mixed residential and commercial building in Brooklyn, New York City (BBL 3010050063). The property is zoned R6A, on a 2,375 sq ft lot, with 4 floors and 6 residential units. It was built in 1925. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 6 open building violations for this lot as of 2026-07-05.

Property facts

BBL	3010050063
Borough	Brooklyn — Community District 6
Neighborhood	Park Slope
ZIP code	11215
Zoning district	R6A
Building class	S5 — mixed residential and commercial building (what’s a building class?)
Land use	04 — Mixed residential & commercial buildings
Lot area	2,375 sq ft
Floors	4
Residential units	6
Year built	1925
FAR	2.73 built · 3 max residential · 0 max commercial Learn: What is FAR?
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

6 open Department of Buildings violations
0 open ECB (OATH) violations
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.