# 405 North Washington Street, Wheaton School in Wheaton, Illinois. It covers 10,886 square feet on the ground. Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 9, 2026. Method propdata-estimator-v6. ## This building 405 North Washington Street, Wheaton. School in Wheaton, Illinois. Property ID sp6ra80456bsg78. ## Facts **Facts about 405 North Washington Street, Wheaton** | Fact | Value | Source | | --- | --- | --- | | Address | 405 North Washington Street, Wheaton, IL 60187 | [USA Structures](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | | Building type | School | [USA Structures and SkyPSI estimator](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | | Footprint | 10,886 square feet | [USA Structures](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | | Perimeter | 421.91 feet | [USA Structures](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | | Height | 45.01 feet | [USGS 3D Elevation Program](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | | Height survey year | 2022 | [USGS 3D Elevation Program](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | | Stories | 3 stories | [USGS 3D Elevation Program](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | | Exterior wall area | 18,992 square feet | [SkyPSI estimator](https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/#how-we-know) | ## Cost ranges Whole-building ranges from the SkyPSI estimator, calibrated October 2, 2026. Grade C: modelled from the Texas calibration. [What the grades mean](https://skypsi.com/estimates/methodology/confidence-grades/). ### Exterior soft wash **Exterior soft wash by drone, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash (drone) | $1,500 | $3,000 | $5,000 | | Facade wash with mold or growth treatment | $2,500 | $4,500 | $7,500 | **Exterior soft wash from a boom lift and by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash, conventional access | $3,000 | $5,500 | $9,000 | ### Window cleaning **Window cleaning by drone, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows only | $500 | $1,000 | $2,000 | | Windows inside and out | $1,000 | $2,000 | $3,500 | **Window cleaning by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows, rope access | $4,000 | $8,000 | $13,500 | | Windows inside and out, rope access | $4,500 | $8,500 | $15,500 | ## Best method - [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Drone has the lowest cost, most likely $3,000. - [Window cleaning](https://skypsi.com/estimates/window-cleaning/): Drone has the lowest cost, most likely $1,000. ## Similar buildings nearby - [433 North Washington Street, Wheaton](https://skypsi.com/property/il/chicago/spen86536b4whs2-433-north-washington-street-wheaton/) - [420 East Franklin Street, Wheaton](https://skypsi.com/property/il/chicago/spenq2xes0t5cy4-420-east-franklin-street-wheaton/) - [326 North Washington Street, Wheaton](https://skypsi.com/property/il/chicago/spkrs62fhqt8efx-326-north-washington-street-wheaton/) ## 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. - [USA Structures](https://disasters.geoplatform.gov/USA_Structures/): Building footprints, heights and occupancy from FEMA's USA Structures. - [SkyPSI estimator](https://skypsi.com/estimates/methodology/sources-and-licensing/): SkyPSI's own price model, calibrated rates and building-class rules. - [USGS 3D Elevation Program](https://www.usgs.gov/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](https://skypsi.com/estimates/methodology/how-a-skyestimate-is-built/). [Request a Quote](https://skypsi.com/request-a-quote) --- Sources: USA Structures, SkyPSI estimator, USGS 3D Elevation Program. Building footprints: USA Structures, FEMA Response Geospatial Office, Oak Ridge National Laboratory and U.S. Geological Survey (CC BY 4.0). https://disasters.geoplatform.gov/USA_Structures/ Building heights from the U.S. Geological Survey 3D Elevation Program (public domain). https://www.usgs.gov/3d-elevation-program Page: https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton/ JSON: https://skypsi.com/property/il/chicago/sp6ra80456bsg78-405-north-washington-street-wheaton.json Content license: https://skypsi.com/content-license.txt