2100 Union Street, Brooklyn
Industrial · built c. 1930 · Block 3531, Lot 32.
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Building permits
Permit records are unavailable right now; the map lists them once the city responds.
Property taxes
- Assessment
- $387,450
- 2026–27 tax
- $39,600
- Market value (city estimate)
- $861,000
- Taxable value
- $365,040
- Assessed land
- $90,000
- Assessed improvements
- $297,450
Zoning
R6: floor area ratio 1.00 built, 2.43 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- May 13, 2026: $600,000, 10,000 sq ft ($60 per sq ft)
- Jan 28, 2020: $2,580,000, 10,000 sq ft ($258 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.
In the news
Housing Lottery Launches for 2102 Union Street in Brownsville, Brooklyn, New York YIMBY, Oct 29, 2026.