461 West 21st Street, Manhattan
Four-family · built c. 1854 · Block 719, Lot 7.
Building permits
- Alteration, filed Jul 2, 2026, estimated cost $143K, described as “Interior renovation including alterations to partitions, finishes. No change to use, egress or occupancy.”
Property taxes
- Assessment
- $1,555,200
- 2026–27 tax
- $84,826
- Market value (city estimate)
- $3,456,000
- Taxable value
- $681,932
- Assessed land
- $627,750
- Assessed improvements
- $927,450
Zoning
R7B: floor area ratio 2.56 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
- Sep 29, 2017: $5,495,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Chelsea Historic District (Historic District). 5 Landmarks Preservation Commission permits are on file.