If your siding has green algae, mildew, grime, or seasonal buildup, the WashPrice house washing calculator can help you estimate what cleaning may cost. Choose your home size, number of stories, condition level, and ZIP code to see a rough house washing price range.

House washing prices usually depend on the size of the home, the number of stories, and how much buildup is on the siding. Light seasonal dirt may clean faster than thick green algae or heavy staining. Many homes are cleaned with a soft washing process designed for siding instead of high-pressure blasting.
Common factors include:
Home size
One-story vs. two-story layout
Amount of algae, mildew, or grime
Siding material and condition
Ease of access around the home
Water availability and setup
Whether other areas are cleaned during the same visit
If you see green algae, mildew, dark streaks, dirt, or areas that look dull compared to the rest of the home, it may be time to clean it. Many homeowners notice it most on shaded sides of the house.
It can be both. Most people start because the home looks dirty or neglected, but removing algae and buildup can also help keep the exterior from looking worse over time.
No. The calculator gives a rough range without photos. Photos may help later if you want a more precise quote, but they are not required just to see the ballpark price.
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