How can I bid on a job without knowing the square footage of the pressure washing that I am to do ? Is this a visual observation? or hours to do job?:confused:

Basically you can't, You can step off the area, a normal step at least the way I walk is about 2 ft or carry a laser measurement tool.

Also many will do a standard two or three bedroom one story house for a set price 100 or 150 dollars. Also there are some construction clean up people who do a drive way up to a certain size for... dollars.

Also if doing drive ways do you use a flat surface cleaner, are chemicals needed, what types of stains on are on the materical being cleaned.