771 Union Street, Brooklyn

Co-op · 4 units · built c. 1920 · Block 953, Lot 62.

Building permits

No building permits on file for this lot.

Property taxes

Assessment
$1,118,700
2026–27 tax
$3,733
Market value (city estimate)
$2,486,000
Taxable value
$38,961
Assessed land
$6,300
Assessed improvements
$1,112,400

Tax breaks

Zoning

R6A: floor area ratio 1.91 built, 3.00 allowed by base zoning.

Flood zone

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

Recent sales

Open-market sales since 2016, from the Department of Finance’s sales files.

More construction in Park Slope

Every lot on block 953

Umarelli: construction in New York City and Jersey City