725 Union Street, Brooklyn
Condominium · 4 units · built c. 1920 · Block 952, Lot 7504.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $2,911,052
- 2026–27 tax
- $36,607
- Market value (city estimate)
- $6,469,000
- Taxable value
- $322,234
- Assessed land
- $27,000
- Assessed improvements
- $2,884,052
- Condo units with their own tax lots
- 4
Tax breaks
- Co-op and condo abatement, with no end date, a $3,484 credit this tax year.
Zoning
R6A: floor area ratio 3.48 built, above the 3.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Apr 17, 2026: $2,100,000, Apt 1
Open-market sales since 2016, from the Department of Finance’s sales files.