136 20th Street, Brooklyn

Three-family · built c. 1910 · Block 639, Lot 18.

Building permits

No building permits on file for this lot.

Property taxes

Assessment
$51,180
2026–27 tax
$3,059
Market value (city estimate)
$853,000
Taxable value
$15,414
Assessed land
$18,660
Assessed improvements
$32,520

Zoning

M1-2D: floor area ratio 0.72 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 Sunset Park

Every lot on block 639

Umarelli: construction in New York City and Jersey City