Pressure washing quotes come down to one line of arithmetic: square feet x
your rate per square foot + add-ons, with a minimum job charge underneath it
so small jobs never come in below what a truck roll costs you.
Say a driveway measures 2,400 square feet and your rate is $0.15 per square foot (a sample number, not a market rate; yours may be higher or lower). The base is $360. Add $50 for chemical treatment and the quote is $410. If the same math on a small patio produced $95 and your minimum job charge is $150, the minimum wins, because the drive, the setup, and the water usage do not shrink with the job.
Your per-square-foot rate has to carry fuel, chemicals, equipment wear, insurance, and your time, not just the minutes the wand is on. The calculator keeps rate, add-ons, and minimum as separate lines so you can see which one is actually driving each quote.
The same math as an Excel workbook, plus a customer-facing estimate, a one-page proposal, an invoice, and collection letters with plain warnings about where state law takes over. $67, instant download, one business license. See what's inside.