431 1st Street, Brooklyn

Two-family · built c. 1901 · Block 966, Lot 59.

Building permits

No building permits on file for this lot.

Property taxes

Assessment
$257,520
2026–27 tax
$10,750
Market value (city estimate)
$4,292,000
Taxable value
$54,174
Assessed land
$35,880
Assessed improvements
$221,640

Zoning

R6B: floor area ratio 1.73 built, 2.00 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 966

Umarelli: construction in New York City and Jersey City