331 West 21st Street, Manhattan

Co-op · 15 units · built c. 1900 · Block 745, Lot 18.

Building permits

Property taxes

Assessment
$1,355,850
2026–27 tax
$137,021
Market value (city estimate)
$3,013,000
Taxable value
$1,283,588
Assessed land
$54,900
Assessed improvements
$1,300,950

Tax breaks

Zoning

R7B: floor area ratio 4.25 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.

More construction in Chelsea

Every lot on block 745

Umarelli: construction in New York City and Jersey City