447 West 24th Street, Manhattan
Two-family · built c. 1850 · Block 722, Lot 12.
Building permits
- Alteration, filed Jul 13, 2026, estimated cost $1.0M, described as “Modification of HVAC sytsem and installation ac units.”
- Alteration, filed Jun 4, 2026, estimated cost $59K, described as “Installation of sprinkler system.”
- Alteration, filed Jun 4, 2026, estimated cost $260K, described as “Modification and installation of plumbing fixtures.”
- Alteration, filed Jun 2, 2026, estimated cost $1.0M, described as “Interior renovation of existing 2 family dwelling, replacement of rear windows and rear porch. No change in use, egress or occupancy.”
- Alteration, filed Jun 1, 2026, estimated cost $380K, described as “Structural work to include new dunnage on roof, reinforce existing floor framing for leveling & repair purposes, modify existing rear extension facade opening at first floor, new rear yard outdoor deck structure.”
Property taxes
- Assessment
- $339,900
- 2026–27 tax
- $40,195
- Market value (city estimate)
- $5,665,000
- Taxable value
- $202,566
- Assessed land
- $147,960
- Assessed improvements
- $191,940
Zoning
R7B: floor area ratio 1.63 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.
Recent sales
- Dec 19, 2025: $4,500,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of 447 West 24th Street House (Individual Landmark). 7 Landmarks Preservation Commission permits are on file.