309 West 86th Street, Manhattan

Co-op · 26 units · built c. 1914 · Block 1248, Lot 25.

Building permits

Property taxes

Assessment
$3,643,650
2026–27 tax
$347,432
Market value (city estimate)
$8,097,000
Taxable value
$3,329,400
Assessed land
$679,500
Assessed improvements
$2,964,150

Tax breaks

Zoning

R10A: floor area ratio 9.85 built, 10.00 allowed by base zoning.

Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

Recent sales

The 10 most recent of 13 open-market sales since 2016, from the Department of Finance’s sales files.

Landmarks

Part of Riverside-West End Historic District Extension I (Historic District). 21 Landmarks Preservation Commission permits are on file.

More construction in Upper West Side

Every lot on block 1248

Umarelli: construction in New York City and Jersey City