6724 21st Avenue, Brooklyn
Four-family · built c. 1931 · Block 5571, Lot 43.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $407,700
- 2026–27 tax
- $16,437
- Market value (city estimate)
- $906,000
- Taxable value
- $132,144
- Assessed land
- $94,950
- Assessed improvements
- $312,750
Zoning
R5: floor area ratio 1.52 built, above the 1.50 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Oct 25, 2023: $1,730,000
Open-market sales since 2016, from the Department of Finance’s sales files.