348 West 20th Street, Manhattan
Three-family · built c. 1854 · Block 743, Lot 73.
Building permits
- Alteration, filed May 13, 2026, estimated cost $105K, described as “Renovations to cellar unit to convert to ADU residential unit. Scope to include bathroom. Change in occupancy from 2-family plus business to 2-family plus cellar ADU.”
Property taxes
- Assessment
- $464,820
- 2026–27 tax
- $39,944
- Market value (city estimate)
- $7,747,000
- Taxable value
- $201,299
- Assessed land
- $220,320
- Assessed improvements
- $244,500
Zoning
R7B: floor area ratio 3.26 built, above the 3.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- May 5, 2026: $5,850,000, 5,000 sq ft ($1,170 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Chelsea Historic District (Historic District). 4 Landmarks Preservation Commission permits are on file.