400 West End Avenue, Manhattan
Co-op · 91 units · built c. 1931 · Block 1227, Lot 1.
Building permits
- Alteration, filed Nov 19, 2025, estimated cost $75K, described as “Renovate cellar, work to include removal of interior non-bearing partitions. Addition of new electrical rm, equipment & conduits. New troughs running thru exterior facade at rear ext courtyard (not visible from street). No change use,…”
- Alteration, filed Jul 18, 2025, estimated cost $102K, described as “Interior alteration at apartment 12D. Renovate (2) existing bathrooms. Install new dropped ceilings throughout. All as indicated on plans filed herewith. No change to use, egress, occupancy or zoning.”
- Alteration, filed Aug 23, 2023, estimated cost $5K, described as “Install medium duty scaffolding as per plans. No change in use, egress, occupancy under this application. Pipe scaffolding shall comply with chapter 33 of the 2022 NYC building code. Sidewalk shed filed under separate application.”
- Alteration, filed Apr 18, 2023, described as “Installation of temporary supported scaffold per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Mar 31, 2023, estimated cost $95K, described as “Interior renovation in apt 19D filed in conjunction with DOB now pl. No change to use, occupancy or egress.”
- Alteration, filed Dec 9, 2022, estimated cost $335K, described as “Interior alteration at apartment 17A. Remove & install new partitions, finishes & ceilings as per plans filed herewith. Minor MH work at kitchen. All as per drawings filed herewith. No change to use, egress, occupancy or zoning.”
- Alteration, filed Dec 9, 2022, estimated cost $61K, described as “Interior renovation at apartment 17A to remove, replace, & relocate plumbing fixtures as per plans filed herewith. No change to use, zoning, egress, or occupancy.”
- Alteration, filed Nov 11, 2022, estimated cost $20K, described as “Plumbing work associated with interior renovation”
- Alteration, filed Nov 11, 2022, estimated cost $290K, described as “Hereby filing for the interior renovation of exxiating apartment 7A and the replacement and installation of mechancial equipment. No change to use occupancy or egress.”
- Alteration, filed Oct 10, 2022, estimated cost $550K, described as “Interior renovation of apartment 17CD as per plans, new central ac system. No change in use, egress, or occupancy.”
- Alteration, filed Aug 23, 2022, estimated cost $20K, described as “Installation of air conditioning units, heating systems and associated ductwork and piping. (GC filed under M00701643 and PL filed under M00701673)”
- Alteration, filed Aug 10, 2022, estimated cost $190K, described as “General construction to include removal of one bathroom, renovation of two bathrooms, new closets in the master bedroom suite. New a/c system and plumbing to be filed under separate job#s. No change to use, egress or occupancy.”
- Alteration, filed Aug 10, 2022, estimated cost $14K, described as “Herewith file to remove and replace plumbing fixtures in Apt 11AB. (GC filed under M00701643)”
- Alteration, filed Mar 30, 2022, 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 300PSF.”
- Alteration, filed Mar 7, 2022, estimated cost $135K, described as “Interior renovation of apartment 11D. No change to use, egress or occupancy”
- Alteration, filed Oct 9, 2020, estimated cost $12K, described as “Plumbing work of apartment # 7B on the 7TH floor. No change in use , egress or occupancy.”
- Alteration, filed Jul 27, 2020, estimated cost $7K, described as “Install medium duty scaffolding as per plans. No change in use, egress, occupancy under this application. Pipe scaffolding shall comply with chapter 33 of the NYC building code.”
- Alteration, filed Mar 22, 2018, 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 300PSF.”
Property taxes
- Assessment
- $20,442,150
- 2026–27 tax
- $2,080,473
- Market value (city estimate)
- $45,427,000
- Taxable value
- $19,525,570
- Assessed land
- $2,362,500
- Assessed improvements
- $18,079,650
Tax breaks
- Co-op and condo abatement, with no end date, a $349,573 credit this tax year.
Zoning
R10A: floor area ratio 14.91 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
- Jan 27, 2026: $3,200,000
- Nov 6, 2025: $4,750,000
- Sep 10, 2025: $1,825,000
- Aug 4, 2025: $250,000
- Jul 8, 2025: $1,995,000
- Apr 30, 2025: $1,250,000
- Apr 14, 2025: $2,550,000
- Feb 11, 2025: $495,000
- Dec 19, 2024: $1,685,000
- May 13, 2024: $2,965,000
The 10 most recent of 30 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). 49 Landmarks Preservation Commission permits are on file.