Property record
121 South 6th Avenue, Mount Vernon
School in Mount Vernon, New York. It covers 60,984 square feet on the ground.
This building
121 South 6th Avenue, Mount Vernon. School in Mount Vernon, New York. Property ID sp7fd3eyf1rf175.
Facts
| Fact | Value | Source |
|---|---|---|
| Address | 121 South 6th Avenue, Mount Vernon, NY 10550 | Overture Maps addresses |
| Building type | School | USA Structures and SkyPSI estimator |
| Place name | Thornton High School | Overture Maps places |
| Place type | high school | Overture Maps places |
| Footprint | 60,984 square feet | USA Structures |
| Perimeter | 1,242.38 feet | USA Structures |
| Height | 69.62 feet | USGS 3D Elevation Program |
| Height survey year | 2019 | USGS 3D Elevation Program |
| Stories | 5 stories | USGS 3D Elevation Program |
| Exterior wall area | 86,494 square feet | SkyPSI estimator |
| Parcel number | 550800165.78-3085-1 | County and state public records |
| Land use | 612 Schools | County and state public records |
Cost ranges
Whole-building ranges from the SkyPSI estimator, calibrated October 2, 2026. Grade C: modelled from the Texas calibration. What the grades mean.
Exterior soft wash
| Service | Low | Most likely | High |
|---|---|---|---|
| Facade wash (drone) | $7,500 | $13,500 | $22,500 |
| Facade wash with mold or growth treatment | $11,000 | $20,000 | $34,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Facade wash, conventional access | $13,500 | $24,500 | $41,000 |
Window cleaning
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows only | $2,500 | $5,500 | $9,000 |
| Windows inside and out | $4,500 | $9,000 | $16,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows, rope access | $18,000 | $36,500 | $63,500 |
| Windows inside and out, rope access | $20,000 | $40,000 | $71,000 |
Best method
- Exterior soft wash: Drone has the lowest cost, most likely $13,500.
- Window cleaning: Drone has the lowest cost, most likely $5,500.
Similar buildings nearby
- 122 South 5th Avenue, Mount Vernon
- 14 West 1st Street, Mount Vernon
- 8 South 8th Avenue, Mount Vernon
- 141 South 9th Avenue, Mount Vernon
- 50 East 1st Street, Mount Vernon
- 250 South 6th Avenue, Mount Vernon
- 250 South 6th Avenue, Mount Vernon
- 149 South 2nd Avenue, Mount Vernon
How we know
Each fact names the source it comes from. A building file carries the source of each field, and SkyPSI shows that source beside the fact.
- County and state public records: Situs addresses, parcel numbers, land use, year built and floor counts from county appraisal districts and state open data.
- USA Structures: Building footprints, heights and occupancy from FEMA's USA Structures.
- Overture Maps addresses: Street addresses from the Overture Maps addresses theme.
- Overture Maps places: Business and place names from the Overture Maps places theme.
- SkyPSI estimator: SkyPSI's own price model, calibrated rates and building-class rules.
- USGS 3D Elevation Program: Lidar elevation data that gives building heights where other sources have none.
Cost ranges come from the SkyPSI estimator, calibrated October 2, 2026. How a SkyEstimate is built.
Ask SkyPSI for a quote on your building.
Request a QuoteSources: County and state public records, USA Structures, Overture Maps addresses, Overture Maps places, SkyPSI estimator, USGS 3D Elevation Program.
An estimate, not a quote. How a SkyEstimate is built.