I'm in georgia and i do some new construction washing, and i also do some building. i would do more of the washing, but i won't work as cheap as these builders think i should. I have a few custom home builders that keep me fairly busy, typical job for them runs $250.00 for whole house, deck, porch, garage floor and driveway. if its a larger house i charge more, for a basement floor its typically $100.00 extra. still not a lot of money, but i'm making min $50.00 per hour and they are all repeat customers. The bigger track home builders thinks you can do all that for $125.00 to $150.00, they try to dictate what they will pay. being curious i followed a guy that does alot of these builders houses. basically he walked around the house, hit a few dirty spots with no chemicals, and did the driveway with a surface cleaner. and was gone in a little over an hour, so he is making pretty good money. I can't work that way, i wash the whole house with chems, remove red mud stains, handprints off cornice, i clean the ext windows, porches decks, scrape drywall mud and glue off the garage floor and do the driveway. here in georgia red mud stains is a problem on concrete, siding and wood decks, so you will have to use chems. between concrete acid and house brite i'll use 30 to 50 dollars in chemicals depending on the house, probably 10 dollars in fuel for my machine, 10-20 dollars for truck fuel if the job is fairly close, alot of them are not. plus the wear and tear on equipment, what is left for manual labor? I have done a few smaller new houses with short drives for $175.00, but those are rare and it is usually two or more houses in a row. a builder is not going to go broke over fifty bucks, but they will make you think they are.
jeff