446 West 23rd Street, Manhattan
Co-op · 5 units · built c. 1857 · Block 720, Lot 70.
Building permits
- Alteration, filed Apr 23, 2025, estimated cost $100K, described as “Hereby filing for the interior renovaitno of unit #4. No change in use, egress or occupancy.”
Property taxes
- Assessment
- $1,830,150
- 2026–27 tax
- $111,451
- Market value (city estimate)
- $4,067,000
- Taxable value
- $1,086,032
- Assessed land
- $406,350
- Assessed improvements
- $1,423,800
Tax breaks
- Co-op and condo abatement, with no end date, a $23,641 credit this tax year.
Zoning
R7B: floor area ratio 2.95 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
- Jun 7, 2021: $2,450,000
- Sep 7, 2016: $2,200,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Chelsea Historic District Extension (Historic District). 9 Landmarks Preservation Commission permits are on file.