645 West End Avenue, Manhattan
Co-op · 73 units · built c. 1913 · Block 1251, Lot 62.
Building permits
- Alteration, filed Oct 28, 2026, estimated cost $340K, described as “Renovation of apt 2A filed in conjunction with DOB now pl. No change to use, occupancy or egress.”
- Alteration, filed Jan 29, 2026, described as “Inspection and Facade Repairs”
- Alteration, filed Jul 8, 2025, estimated cost $1K, described as “Installation and use of temporary supported scaffold as per plans filed herewith. No change in use, egress, or occupancy.”
- Alteration, filed Jul 8, 2025, estimated cost $1K, described as “Temporary installation and use of sidewalk shed as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jul 2, 2025, estimated cost $321K, described as “Exterior work includes select masonry repairs and cornice repairs as shown on drawings and as specified. No change in use, occupancy, or egress.”
- Alteration, filed Oct 21, 2024, estimated cost $148K, described as “Renovation of existing apartment #7F. Architectural work as per submitted plans. No change in use, occupancy or egress.”
- Alteration, filed May 20, 2021, estimated cost $35K, described as “Plumbing work in conjunction with interior renovation of unit 5A on the fifth floor of an existing residential building. No change in use, occupancy or egress.”
- Alteration, filed Apr 19, 2021, estimated cost $18K, described as “Interior renovation of unit 5A on the fifth floor of an existing residential building. No change in use, occupancy or egress.”
- Alteration, filed Mar 29, 2021, estimated cost $1K, described as “Installation of temporary 20' high pipe scaffold originating (off roof) as per plan. No change in use egress or occupancy,pipe scaffold shall comply with CHAPTER#33 of 2014 the ny building code.”
- Alteration, filed Mar 29, 2021, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed as per plans. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of the NYC building code. Live load 300 psf”
- Alteration, filed Sep 30, 2019, estimated cost $21K, described as “Plumbing work filed in conjunction with renovation of unit 12F on the 12th floor of an existing residential building. no change to use, occupancy, or egress.”
- Alteration, filed Aug 13, 2018, estimated cost $1K, described as “Installation of heavy duty sidewalk shed 331' L x 8-12' H x 12-16' W with 300 psf. & 600 psf. for material & debris storage. No change in use, occupancy, or egress.”
Property taxes
- Assessment
- $10,063,800
- 2026–27 tax
- $1,023,664
- Market value (city estimate)
- $22,364,000
- Taxable value
- $9,622,207
- Assessed land
- $1,997,100
- Assessed improvements
- $8,066,700
Tax breaks
- Co-op and condo abatement, with no end date, a $173,899 credit this tax year.
Zoning
R10A: floor area ratio 10.15 built, above the 10.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Jun 22, 2026: $2,865,000
- Nov 25, 2025: $1,600,000
- Apr 2, 2025: $1,825,000
- Jul 18, 2024: $1,995,000
- Sep 21, 2023: $1,995,000
- Jul 12, 2022: $2,150,000
- Apr 13, 2022: $2,195,000
- Mar 10, 2022: $1,635,000
- Jan 14, 2022: $2,325,000
- Jan 12, 2022: $1,999,999
The 10 most recent of 18 open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Riverside-West End Historic District (Historic District). 43 Landmarks Preservation Commission permits are on file.