317 6th Avenue, Brooklyn

Co-op · 4 units · built c. 1920 · Block 976, Lot 3.

Building permits

No building permits on file for this lot.

Property taxes

Assessment
$1,912,500
2026–27 tax
$13,278
Market value (city estimate)
$4,250,000
Taxable value
$148,460
Assessed land
$15,300
Assessed improvements
$1,897,200

Tax breaks

Zoning

R6B: floor area ratio 2.66 built, above the 2.00 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 Park Slope

Every lot on block 976

Umarelli: construction in New York City and Jersey City