5811 21st Avenue, Brooklyn
Two-family · built c. 1925 · Block 5508, Lot 6.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $100,200
- 2026–27 tax
- $8,804
- Market value (city estimate)
- $1,670,000
- Taxable value
- $44,369
- Assessed land
- $19,140
- Assessed improvements
- $81,060
Zoning
R5: floor area ratio 0.90 built, 1.50 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.