463 West 21st Street, Manhattan

Co-op · 6 units · built c. 1836 · Block 719, Lot 6.

Building permits

Property taxes

Assessment
$2,097,900
2026–27 tax
$92,835
Market value (city estimate)
$4,662,000
Taxable value
$871,360
Assessed land
$314,100
Assessed improvements
$1,783,800

Tax breaks

Zoning

R7B: floor area ratio 2.49 built, 3.00 allowed by base zoning.

Flood zone

Current FEMA flood map: zone X, moderate risk: a 0.2% chance of flooding each year. FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NAVD88).

Recent sales

Open-market sales since 2016, from the Department of Finance’s sales files.

Landmarks

Part of Chelsea Historic District (Historic District). 10 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