6123 20th Avenue, Brooklyn

Four-family with store · built c. 1931 · Block 5528, Lot 1.

Building permits

No building permits on file for this lot.

Property taxes

Assessment
$600,300
2026–27 tax
$15,079
Market value (city estimate)
$1,334,000
Taxable value
$121,225
Assessed land
$148,050
Assessed improvements
$452,250

Zoning

R5: floor area ratio 2.56 built, above the 1.50 base zoning allows, which bonuses, transfers or older rules can permit.

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 Borough Park

Every lot on block 5528

Umarelli: construction in New York City and Jersey City