6720 21st Avenue, Brooklyn
Four-family · built c. 1931 · Block 5571, Lot 42.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $407,700
- 2026–27 tax
- $15,889
- Market value (city estimate)
- $906,000
- Taxable value
- $127,735
- Assessed land
- $94,950
- Assessed improvements
- $312,750
Zoning
R5: floor area ratio 1.26 built, 1.50 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Jul 30, 2018: $1,650,000
Open-market sales since 2016, from the Department of Finance’s sales files.