309 7th Avenue, Brooklyn

Mixed use · 6 units · built c. 1920 · Block 1090, Lot 4.

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Building permits

Property taxes

Assessment
$1,925,550
2026–27 tax
$49,713
Market value (city estimate)
$4,279,000
Taxable value
$399,658
Assessed land
$17,550
Assessed improvements
$1,908,000

Zoning

R6A: floor area ratio 3.32 built, above the 3.00 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.

Landmarks

Part of Park Slope Historic District Extension (Historic District). 8 Landmarks Preservation Commission permits are on file.

More construction in Park Slope

Every lot on block 1090

Umarelli: construction in New York City and Jersey City