Pressure Washing Pricing Calculator

By Trade Business Guide Research Desk

Set the surface and minimum first

Surface type offers Concrete, Deck, and Siding. The implemented cost multipliers are 1 for concrete, 1.5 for deck, and 1.25 for siding. They are fixed tool rules, not sourced market benchmarks. Square feet is the area to wash. Cost per square foot is your underlying unit cost before the surface multiplier. Target margin (%) determines a price from adjusted cost, while Minimum job charge sets a floor on the final price.

Build unit cost from the resources actually required for your work. The form does not ask separately for chemical use, water access, travel, labor, equipment wear, or setup. If your unit cost excludes a major expense, the resulting price can meet the selected margin on paper while failing to cover the full job. Measure the area and identify the surface carefully; the calculator uses one surface selection for the entire area. For a mixed-surface property, run separate calculations or build a combined cost outside the form.

How the calculation works

adjusted cost = square feet × cost per square foot × surface factor. Next calculate margin price = adjusted cost / (1 − target margin / 100). The displayed Price is the larger of Margin price and Minimum job charge. The tool also displays Cost. Target margin must be below 100% for a price, and a minimum charge must be entered. The code does not check whether the minimum itself achieves the target margin; when the minimum is higher, it simply overrides the margin-based price.

Example assumptions — not benchmarks: deck surface, 400 square feet, base cost $0.20 per square foot, target margin 25%, and minimum job charge $200. Base cost is 400 × $0.20 = $80. The deck factor makes adjusted Cost $80 × 1.5 = $120. Divide $120 by 0.75 to get a margin price of $160. The minimum of $200 is higher, so Price is $200. Against the $120 adjusted cost, that particular price leaves $80, or 40% of price, before any omitted expense. These amounts demonstrate the floor, not a typical wash price.

Understand when the floor governs

A minimum can recover mobilization effort on a small job, but it is only as useful as the cost and scope behind it. If the margin price already exceeds the minimum, the floor has no effect. If the floor controls, the realized margin based on entered cost can exceed the target, as in the example. Conversely, setting a minimum below an inadequately estimated cost does not repair the cost estimate. The tool does not account for accessibility, stain severity, or surface condition beyond its three fixed surface choices.

For a job with additional flat charges or separately estimated labor, the job pricing calculator may fit better. Build a business labor rate with contractor hourly rate, review fleet cost with commercial vehicle cost, and check completed-job results with profit margin. Keep measurements and surface selection with the quote so a later scope change is visible.

Wash-pricing questions

Last updated: September 24, 2026