539 Union Avenue, The Bronx

A condominium on a 51,078 sq ft The Bronx lot on Union Avenue, zoned R7-2, built in 2013.

539 Union Avenue is a condominium in The Bronx, New York City (BBL 2025827501). The property is zoned R7-2, on a 51,078 sq ft lot, with 8 floors and 126 residential units. It was built in 2013. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 4 open building violations for this lot as of 2026-07-05.

Property facts

BBL	2025827501
Borough	The Bronx — Community District 1
Neighborhood	Mott Haven-Port Morris
Zoning district	R7-2
Building class	RM — condominium (what’s a building class?)
Land use	04 — Mixed residential & commercial buildings
Lot area	51,078 sq ft
Floors	8
Residential units	126
Year built	2013
FAR	2.48 built · 3.44 max residential · 0 max commercial Learn: What is FAR?
Flood zone	Not in a FEMA Special Flood Hazard Area

Public records

0 open Department of Buildings violations
1 open ECB (OATH) violation — $625 in penalties due
3 open Housing Preservation & Development violations
Façade safety filing status: SAFE (latest filing 2024-02-21)

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.