766 Union Street, Brooklyn
Condominium · 4 units · built c. 1920 · Block 957, Lot 7503.
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Building permits
- Alteration, filed Sep 5, 2025, estimated cost $5K, described as “All work is exterior rear yard work. No change in occupancy, use, topography,drainage or egress. Work scope consists ofthe renovations to the ground surfaces ofthe backyard (new artificial turf & pavers),new open-air enclosure around the…”
- Alteration, filed Dec 20, 2023, estimated cost $76K, described as “Minor renovation to existing cellar medical office. Construct interior non bearing partitions and finishes. No change to use, egress, or occupancy.”
- Alteration, filed Jul 17, 2019, described as “Temporary Construction Fence filed in conjunction with Alteration Type-I Application # 321927439”
Property taxes
- Assessment
- $1,153,801
- 2026–27 tax
- $18,736
- Assessed land
- $454,501
- Assessed improvements
- $699,300
- Condo units with their own tax lots
- 6
Zoning
R6A: floor area ratio 3.20 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.