544 Union Street, Brooklyn
A 1931 mixed residential and commercial building on Union Street with 11 open violations on record across city enforcement files.
544 Union Street is a mixed residential and commercial building in Brooklyn, New York City (BBL 3004400027). The property is zoned M1-4/R6A, on a 3,600 sq ft lot, with 3 floors and 5 residential units. It was built in 1931. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 11 open building violations for this lot as of 2026-07-05.
Property facts
| BBL | 3004400027 |
|---|---|
| Borough | Brooklyn — Community District 6 |
| Neighborhood | Carroll Gardens-Cobble Hill-Gowanus-Red Hook |
| Zoning district | M1-4/R6A |
| Building class | S4 — mixed residential and commercial building (what’s a building class?) |
| Land use | 04 — Mixed residential & commercial buildings |
| Lot area | 3,600 sq ft |
| Floors | 3 |
| Residential units | 5 |
| Year built | 1931 |
| FAR | 1.93 built · 3 max residential · 2 max commercial Learn: What is FAR? |
| Flood zone | Not in a FEMA Special Flood Hazard Area |
Public records
- 6 open Department of Buildings violations
- 1 open ECB (OATH) violation
- 4 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)
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.