21 West 75th Street, Manhattan
Condominium · 5 units · built c. 1893 · Block 1128, Lot 7503.
Building permits
- Alteration, filed May 14, 2026, estimated cost $285K, described as “Combine Apt 4 and 5 per TPPN 3/97 and horizontal extension of existing building at 3rd and 4th floor. General construction related to apartment renovation. No change to use, egress or occupancy.”
- Alteration, filed Nov 25, 2025, estimated cost $15K, described as “Replace split type heat pump system”
- Alteration, filed Jan 31, 2023, estimated cost $76K, described as “Limited HVAC System Upgrade at Apartment 2. No change to use, egress, or occupancy.”
- Alteration, filed May 20, 2022, estimated cost $29K, described as “Remove 1080 gallon oil tank”
Property taxes
- Assessment
- $2,105,100
- 2026–27 tax
- $81,087
- Market value (city estimate)
- $4,678,000
- Taxable value
- $766,773
- Assessed land
- $504,000
- Assessed improvements
- $1,601,100
- Condo units with their own tax lots
- 5
Tax breaks
- Co-op and condo abatement, with no end date, a $14,292 credit this tax year.
Zoning
R8B: floor area ratio 3.30 built, 4.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- May 13, 2025: $1,225,000, Apt 4
- Jun 25, 2020: $3,800,000, Unit PH
- Jul 17, 2018: $3,000,000, Apt 2
- Nov 29, 2017: $2,476,000, Apt 3
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Upper West Side/Central Park West Historic District (Historic District). 5 Landmarks Preservation Commission permits are on file.