Pressure washing: price, hours and your real hourly
Per-square-foot pricing is easy to quote and easy to lose money on. The useful check is what the quoted price works out to per hour once you apply the rate you actually clean at.
Result
Compare the effective hourly against the floor from the hourly rate calculator. If it is below, the job is priced wrong no matter how reasonable the per-square-foot number looked.
Questions
Should I price per square foot or per hour?
Quote per square foot because customers understand it, but check the effective hourly before you send it. The two have to agree or you are working for a number you did not choose.
Does soft washing change the rate?
Yes, significantly — chemical dwell time and rinse change the production rate, so use the rate for the method you are actually quoting.
Or stop doing this in a calculator
Aerys prices the whole job from your own catalog and production rates, sends it with an accept link and an invoice already attached, and then tracks what the job actually cost against what you quoted.