45 West 21st Street, Manhattan

Commercial · built c. 1902 · Block 823, Lot 10.

Building permits

Property taxes

Assessment
$6,185,250
2026–27 tax
$658,831
Market value (city estimate)
$13,745,000
Taxable value
$6,073,290
Assessed land
$900,000
Assessed improvements
$5,285,250

Zoning

C6-4A: floor area ratio 6.47 built, 10.00 allowed by base zoning.

Flood zone

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

Landmarks

Part of Ladies' Mile Historic District (Historic District). 50 Landmarks Preservation Commission permits are on file.

Board and land use applications

More construction in Flatiron

Every lot on block 823

Umarelli: construction in New York City and Jersey City