742 Union Street, Brooklyn

Condominium · 4 units · built c. 1931 · Block 956, Lot 7501.

Building permits

No building permits on file for this lot.

Property taxes

Assessment
$825,751
2026–27 tax
$35,181
Market value (city estimate)
$1,834,999
Taxable value
$297,530
Assessed land
$47,250
Assessed improvements
$778,501
Condo units with their own tax lots
4

Tax breaks

Zoning

R6A: floor area ratio 1.84 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 956

Umarelli: construction in New York City and Jersey City