Power Washing Cost Calculator

Knowing what professional power washing should cost makes it far easier to plan home or commercial property upkeep. A solid estimate up front keeps the project on budget and heads off surprise charges.

The math is a flat rate per square foot for the surface you pick: $0.35 for house siding, $0.50 for a deck, $0.20 for a driveway and $0.25 for a patio. The rate does not fall as the area grows, although pros often quote large or easy jobs such as driveways at a lower rate. Alongside the professional price, the calculator shows a $75 one-day pressure-washer rental as the do-it-yourself option and the difference between the two. For comparison, HomeAdvisor's cost guide (updated June 2026) puts professional pressure washing at $0.10 to $0.50 per square foot and washer rental at $35 to $175 a day.

Where you live, how stubborn the grime is, how reachable the surfaces are, and extras like stain removal or sealing all nudge the real price away from the estimate. Measure the area carefully, since lowballing the square footage is a frequent source of error. Note too that many companies set a minimum service fee (HomeAdvisor cites about $100), which this tool does not build in, so confirm that detail with your provider.