425 West End Avenue, Manhattan
Co-op · 30 units · built c. 1900 · Block 1244, Lot 44.
Building permits
- Alteration, filed Oct 30, 2026, estimated cost $612K, described as “Proposed masonry repairs, lintel and sill replacements, stucco repairs, terra cotta repairs, stone repairs, coping stone replacement, sealant replacement, skylight replacement, concrete repairs, anchor repairs, scraping, priming, and…”
- Alteration, filed Jan 29, 2026, described as “Initial industrial rope access CD5 fisp.inspection”
- Alteration, filed Dec 1, 2023, estimated cost $150K, described as “Replace boiler and gas burner.”
- Alteration, filed Sep 28, 2022, estimated cost $15K, described as “Renovation of 2 bathrooms.”
- Alteration, filed Sep 27, 2022, estimated cost $70K, described as “Renovation of two bathrooms and window replacement”
- Alteration, filed Feb 3, 2021, estimated cost $25K, described as “Updating existing bathrooms and kitchen, replacement/installation of fixtures on 7TH floor/7TH floor mez. No change in use, egress or occupancy.”
- Alteration, filed Feb 3, 2021, estimated cost $24K, described as “Hereby filing for the installation of split air conditioning system in penthouse a on the 7TH and 7TH floor mezzanine. No change in use, egress or occupancy.”
- Alteration, filed Aug 18, 2020, estimated cost $5K, described as “Installation and modification of plumbing fixtures at existing residence on floor 007 and 008.Plumbing work.There is to be no change of use, occupancy, or egress.”
- Alteration, filed Aug 18, 2020, estimated cost $35K, described as “Installation of condenser on existing terrace, 4 interior air handlers and associated piping and ductwork. Mechanical work. There is to be no change of use, occupancy, or egress.”
Property taxes
- Assessment
- $4,144,950
- 2026–27 tax
- $395,738
- Market value (city estimate)
- $9,211,000
- Taxable value
- $3,656,830
- Assessed land
- $1,048,500
- Assessed improvements
- $3,096,450
Tax breaks
- Co-op and condo abatement, with no end date, a $59,489 credit this tax year.
Zoning
R10A: floor area ratio 8.00 built, 10.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Mar 9, 2026: $1,899,000
- Feb 24, 2026: $1,290,000
- Aug 13, 2024: $1,945,000
- Jun 15, 2023: $2,220,000
- May 2, 2023: $1,849,000
- Mar 30, 2023: $983,550
- Mar 6, 2023: $1,600,000
- Sep 29, 2022: $1,135,000
- Dec 20, 2021: $487,500
- Jun 3, 2021: $1,818,000
The 10 most recent of 15 open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Riverside-West End Historic District Extension I (Historic District). 13 Landmarks Preservation Commission permits are on file.