811 Union Street, Brooklyn

Parking · built c. 1921 · Block 954, Lot 66.

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Building permits

Permit records are unavailable right now; the map lists them once the city responds.

Property taxes

Assessment
$326,700
2026–27 tax
$30,364
Market value (city estimate)
$726,000
Taxable value
$279,900
Assessed land
$48,600
Assessed improvements
$278,100

Zoning

R6A: floor area ratio 1.20 built, 3.00 allowed by base zoning.

Flood zone

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

More construction in Park Slope

Every lot on block 954

Umarelli: construction in New York City and Jersey City