405 West 21st Street, Manhattan

Co-op · 12 units · built c. 1853 · Block 719, Lot 36.

Building permits

No building permits on file for this lot.

Property taxes

Assessment
$831,150
2026–27 tax
$94,389
Market value (city estimate)
$1,847,000
Taxable value
$780,840
Assessed land
$82,800
Assessed improvements
$748,350

Tax breaks

Zoning

R7B: floor area ratio 3.07 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 Chelsea Historic District (Historic District). 6 Landmarks Preservation Commission permits are on file.

More construction in Chelsea

Every lot on block 719

Umarelli: construction in New York City and Jersey City