6 West 71st Street, Manhattan
Co-op · 10 units · built c. 1892 · Block 1123, Lot 38.
Building permits
- Alteration, filed Oct 9, 2025, estimated cost $125K, described as “Interior renovation of apartment 4B & 3A including kitchen cabinet, install ceramic tiles patch and paint existing wall and interior finishes. All work per plan submitted. No change in use, egress or occupancy”
- Alteration, filed Nov 7, 2024, estimated cost $42K, described as “Renovation of existing apartment 4A including removal of existing kitchen cabinet, patch and paint existing wall & ceiling, all work per plan filed. No change in use, egress or occupancy”
Property taxes
- Assessment
- $2,260,800
- 2026–27 tax
- $109,424
- Market value (city estimate)
- $5,024,000
- Taxable value
- $879,683
- Assessed land
- $430,200
- Assessed improvements
- $1,830,600
Zoning
R8B: floor area ratio 3.21 built, 4.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Feb 4, 2026: $750,000
- Dec 17, 2025: $835,000
- Oct 30, 2025: $665,000
- Aug 4, 2022: $3,800,000
- Jul 29, 2021: $690,000
- Jan 1, 2018: $141,250
- Jan 1, 2018: $307,925
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Upper West Side/Central Park West Historic District (Historic District). 7 Landmarks Preservation Commission permits are on file.