1715 Union Street, Brooklyn
Apartment building · 20 units · built c. 1922 · Block 1396, Lot 70.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $2,074,050
- 2026–27 tax
- $238,787
- Market value (city estimate)
- $4,609,000
- Taxable value
- $1,919,660
- Assessed land
- $100,800
- Assessed improvements
- $1,973,250
Zoning
R4: floor area ratio 2.95 built, above the 1.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Jun 23, 2026: $57,000,000, 22,072 sq ft, sold with other lots
Open-market sales since 2016, from the Department of Finance’s sales files.