424 West End Avenue, Manhattan
Apartment building · 230 units · built 1982 · Block 1228, Lot 61.
Building permits
- Alteration, filed Mar 4, 2026, estimated cost $100K, described as “Interior renovation of existing commercial space in the basement. No change to use, egress, or occupancy.”
- Alteration, filed Feb 24, 2026, estimated cost $15K, described as “Replacement of ac handler unit in basement and in the basement roof level , all as per plan filed herewith , no change in use egress or occupancy”
- Alteration, filed Jan 12, 2024, described as “New work to perform, all details remain the same just positioning suspended scaffolds.”
- Alteration, filed Jan 3, 2024, estimated cost $56K, described as “Interior renovations for dental office at basement, include removing and installing new interior non-load bearing partitions, lighting and finish work. No change to use, egress or occupancy.”
- Alteration, filed Aug 8, 2023, estimated cost $97K, described as “Exterior facade repairs of flashing replacement and single brick replacement, no change in use, egress or occupancy.”
- Alteration, filed Jun 7, 2023, estimated cost $30K, described as “Replace and install new split HVAC units in existing location roof over basement, floor, and replace air handler unit at ,mechanical basement intermediate level obtain equipment use permit . All as per plan no change in use egress or…”
- Alteration, filed Jun 25, 2021, estimated cost $700K, described as “Exterior facade repair of patching at concrete slab edge and patching at concrete parapet, no change in use, egress or occupancy.”
- Alteration, filed Mar 29, 2021, described as “Sidewalk shed proposed installation of sidewalk shed as per plan. No change in use,egress or occupancy.”
Property taxes
- Assessment
- $45,957,600
- 2026–27 tax
- $5,246,023
- Market value (city estimate)
- $102,128,000
- Taxable value
- $42,173,990
- Assessed land
- $13,545,000
- Assessed improvements
- $32,412,600
Zoning
R10A: floor area ratio 15.13 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.
Landmarks
Part of Riverside-West End Historic District Extension I (Historic District). 28 Landmarks Preservation Commission permits are on file.