5816 21st Avenue, Brooklyn
Four-family · built c. 1931 · Block 5507, Lot 46.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $475,650
- 2026–27 tax
- $14,712
- Market value (city estimate)
- $1,057,000
- Taxable value
- $118,275
- Assessed land
- $95,400
- Assessed improvements
- $380,250
Zoning
R5: floor area ratio 1.32 built, 1.50 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.