520 West 45th Street, Manhattan
Condominium · 18 units · built c. 1905 · Block 1073, Lot 7504.
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Building permits
- Alteration, filed Jan 26, 2026, estimated cost $50K, described as “Replace special gas vent from existing water heaters to roof.”
- Alteration, filed Apr 14, 2025, estimated cost $20K, described as “Installation of Filtration System and replacement of Domestic Water Booster Pump. No change in egress or use proposed under this scope of work.”
Property taxes
- Assessment
- $5,440,953
- 2026–27 tax
- $559,781
- Assessed land
- $632,701
- Assessed improvements
- $4,808,252
Zoning
R8: floor area ratio 3.45 built, 6.02 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Jun 29, 2026: $2,380,000, Apt 5B
- Aug 5, 2024: $1,995,000, Apt 2A
- Aug 10, 2022: $2,712,500, Apt 1A
- Jul 27, 2022: $1,940,000, Apt 3B
- May 24, 2022: $1,965,000, Apt 2C
- Apr 20, 2022: $2,085,000, Apt 3A
- Apr 8, 2022: $2,210,000, Apt 5D
- May 27, 2021: $2,960,000, Apt 1B
- Mar 1, 2018: $1,850,000, Apt 4D
- Jan 10, 2018: $1,900,000, Apt 2C
The 10 most recent of 26 open-market sales since 2016, from the Department of Finance’s sales files.