5821 21st Avenue, Brooklyn
Two-family · built c. 1925 · Block 5508, Lot 1.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $82,560
- 2026–27 tax
- $9,031
- Market value (city estimate)
- $1,376,000
- Taxable value
- $45,512
- Assessed land
- $18,300
- Assessed improvements
- $64,260
Zoning
R5: floor area ratio 1.12 built, 1.50 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Nov 28, 2017: $650,000
Open-market sales since 2016, from the Department of Finance’s sales files.