436 West 23rd Street, Manhattan
Co-op · 5 units · built c. 1854 · Block 720, Lot 65.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $1,476,450
- 2026–27 tax
- $104,279
- Market value (city estimate)
- $3,281,000
- Taxable value
- $1,014,696
- Assessed land
- $406,350
- Assessed improvements
- $1,070,100
Tax breaks
- Co-op and condo abatement, with no end date, a $22,120 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, minimal flood hazard. FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NAVD88).
Recent sales
- Jul 10, 2025: $2,379,500
- Oct 31, 2019: $2,650,000
- Oct 6, 2016: $705,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Chelsea Historic District Extension (Historic District). 1 Landmarks Preservation Commission permit is on file.