523 5th Street, Brooklyn

Apartment building · 8 units · built c. 1920 · Block 1082, Lot 50.

Building permits

Property taxes

Assessment
$1,832,850
2026–27 tax
$30,339
Market value (city estimate)
$4,073,000
Taxable value
$243,901
Assessed land
$25,200
Assessed improvements
$1,807,650

Zoning

R6B: floor area ratio 2.74 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.

Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

More construction in Park Slope

Every lot on block 1082

Umarelli: construction in New York City and Jersey City