417 West 21st Street, Manhattan
Three-family · built c. 1843 · Block 719, Lot 30.
Building permits
- Alteration, filed Feb 8, 2022, estimated cost $90K, described as “Mechanical work to demolish existing condenser unit in backyard. Relocate 4th Floor condenser unit to Rooftop. Add new unit on Rooftop to replace demolished unit”
- Alteration, filed Feb 2, 2022, estimated cost $298K, described as “Interior renovations as shown on drawings filed herewith. Combine dwelling units per DOB Technical Policy Procedure Notice # 3/1997.”
- Alteration, filed Feb 2, 2022, estimated cost $26K, described as “Plumbing work during Interior renovation to combine dwelling units per DOB Technical Policy Procedure Notice # 3/1997.”
Property taxes
- Assessment
- $470,700
- 2026–27 tax
- $52,365
- Market value (city estimate)
- $7,845,000
- Taxable value
- $263,897
- Assessed land
- $168,480
- Assessed improvements
- $302,220
Zoning
R7B: floor area ratio 1.83 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.
Landmarks
Part of Chelsea Historic District (Historic District). 9 Landmarks Preservation Commission permits are on file.