423 Gates Avenue, Brooklyn
Three-family · built c. 1899 · Block 1808, Lot 87.
Building permits
- Alteration, filed Nov 25, 2025, estimated cost $184K, described as “Application filed herewith to convert the existing first floor commercial space into a residential unit”
Property taxes
- Assessment
- $193,080
- 2026–27 tax
- $4,214
- Market value (city estimate)
- $3,218,000
- Taxable value
- $21,238
- Assessed land
- $14,880
- Assessed improvements
- $178,200
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.