6308 21st Avenue, Brooklyn
Two-family · built c. 1915 · Block 5542, Lot 37.
Building permits
- Alteration, filed Jan 8, 2021, estimated cost $140K, described as “Replace existing windows, partition walls, doors, ceiling and flooring on basement, 1ST floor and 2ND floor. No change of use, egress or occupancy.”
Property taxes
- Assessment
- $84,060
- 2026–27 tax
- $8,638
- Market value (city estimate)
- $1,401,000
- Taxable value
- $43,485
- Assessed land
- $12,840
- Assessed improvements
- $71,220
Zoning
R5: floor area ratio 0.74 built, 1.50 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.