Pressure Washing Estimate Calculator

Select the surfaces you need cleaned (driveway, siding, deck, etc.), enter the square footage for each, and choose the soil condition. The calculator multiplies your area by industry-average per-square-foot rates to give you a low and high estimate. Add-ons like sealing and chemical treatment are factored in separately.

A standard two-car driveway (400–600 sq ft) typically costs $40–$120 to pressure wash. Heavily stained or oil-spotted driveways cost more due to extra chemical treatment and time. Select "Driveway / Concrete" in the calculator and enter your square footage for a more precise estimate.

House washing (usually soft washing for siding) runs $0.15–$0.40 per square foot. A typical 2,000 sq ft home with roughly 2,500–3,500 sq ft of exterior wall area costs $375–$1,400. The price depends on siding material, number of stories, and how much mold or mildew buildup is present.

Pressure washing uses high-pressure water (1,500–4,000 PSI) and is best for hard surfaces like concrete, brick, and stone. Soft washing uses low pressure (under 500 PSI) with chemical solutions and is used on delicate surfaces like vinyl siding, stucco, and roofs. Soft washing typically costs more per square foot because of chemical costs.

Most contractors price by square footage. Calculate your cost per square foot by dividing total costs (labor, fuel, chemicals, equipment wear, insurance) by the square feet you can clean per hour. Typical rates: concrete $0.08–$0.20/sq ft, siding $0.15–$0.40/sq ft, decks $0.15–$0.35/sq ft. Set a minimum job charge ($100–$150) to cover travel and setup.

Key factors include: surface type (concrete vs. siding vs. roof), total square footage, soil level and stain type (mold, oil, rust), accessibility (multi-story, tight spaces), whether sealing is included after cleaning, chemical treatments needed, and your local market rates.

Pressure washing a deck runs $0.15–$0.35 per square foot. Adding sealing or staining after cleaning adds $0.10–$0.25 per square foot. A 300 sq ft deck typically costs $45–$180 for washing and sealing combined. Check the "Surface sealing" add-on in the calculator to include this.

Yes. Heavy soil, mold buildup, oil stains, and rust require more time, higher chemical concentrations, and sometimes multiple passes. Most contractors apply a 20–30% upcharge for heavy soil conditions. Use the "Heavy Soil / Stains" option in the calculator to see the adjusted estimate.

Most pressure washing businesses set a minimum of $100–$200 per job to cover travel time, setup, fuel, and equipment wear. Even a small sidewalk or porch takes time to load equipment, drive to the site, and set up — your minimum ensures those small jobs are still profitable.

Driveways and sidewalks: once a year. House siding: every 1–2 years. Decks and patios: annually before sealing. Roofs: every 2–3 years or as needed. Commercial properties may need quarterly or monthly cleaning. Regular maintenance makes each cleaning easier and preserves surface life.