Union Avenue, Brooklyn
An elevator apartment building built in 2021 on Union Avenue under R8A zoning on a 9,643 sq ft lot.
Union Avenue is an elevator apartment building in Brooklyn, New York City (BBL 3022490023). The property is zoned R8A, on a 9,643 sq ft lot, with 9 floors and 41 residential units. It was built in 2021. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 3 open building violations for this lot as of 2026-07-05.
Property facts
| BBL | 3022490023 |
|---|---|
| Borough | Brooklyn — Community District 1 |
| Neighborhood | South Williamsburg |
| Zoning district | R8A |
| Building class | D6 — elevator apartment building (what’s a building class?) |
| Land use | 04 — Mixed residential & commercial buildings |
| Lot area | 9,643 sq ft |
| Floors | 9 |
| Residential units | 41 |
| Year built | 2021 |
| FAR | 7.64 built · 6.02 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 — $2,500 in penalties due
- 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.