321 West 90th Street, Manhattan
Co-op · 54 units · built c. 1929 · Block 1251, Lot 8.
Building permits
- Alteration, filed Jan 8, 2026, estimated cost $89K, described as “Application filed for minor interior non-loadbearing partitions and plumbing fixtures, and related finishes, as per plan.”
- Alteration, filed Oct 6, 2021, described as “Installation of temporary sidewalk shed per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Sep 20, 2021, estimated cost $172K, described as “Facade repairs. No change in use, egress or occupancy.”
- Alteration, filed Feb 27, 2020
- Alteration, filed Jan 3, 2020, estimated cost $14K, described as “Replace gas meter bar & meter, replace overhead gas piping in cellar, and gas riser for apt 2A. No change in mans of egress, use group, or occupancy.”
Property taxes
- Assessment
- $4,139,100
- 2026–27 tax
- $377,140
- Market value (city estimate)
- $9,198,000
- Taxable value
- $3,421,109
- Assessed land
- $1,192,050
- Assessed improvements
- $2,947,050
Tax breaks
- Co-op and condo abatement, with no end date, a $49,224 credit this tax year.
Zoning
R8: floor area ratio 6.18 built, above the 6.02 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Aug 4, 2026: $850,000
- Sep 22, 2025: $1,400,000
- Jul 30, 2024: $880,500
- Jun 17, 2024: $752,000
- Jan 24, 2024: $730,000
- Sep 15, 2022: $675,000
- Aug 12, 2022: $825,000
- Sep 15, 2021: $660,000
- Jul 9, 2021: $740,000
- Jun 24, 2021: $809,000
The 10 most recent of 21 open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Riverside-West End Historic District (Historic District). 25 Landmarks Preservation Commission permits are on file.