341 West 20th Street, Manhattan
Single family · built c. 1847 · Block 744, Lot 16.
Building permits
- Alteration, filed Nov 11, 2026, estimated cost $25K, described as “Direct Replacement of (2) 5-ton rooftop air-conditioning units on existing steel dunnage. Reconnect to existing ductwork and utilities.”
Property taxes
- Assessment
- $303,060
- 2026–27 tax
- $37,725
- Market value (city estimate)
- $5,051,000
- Taxable value
- $190,115
- Assessed land
- $106,920
- Assessed improvements
- $196,140
Zoning
R7B: floor area ratio 1.30 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Landmarks
Part of Chelsea Historic District (Historic District). 3 Landmarks Preservation Commission permits are on file.