entry level industrial pressure washer = $350
driveway washer kit = 80
buy 2 of each, pick up some dudes from home depot and go door to door offering pressure washing for a low price (maybe 200-250 for the house and 50 for the driveway). each house will take 2-3 hours.
get enough money to buy 5-6 washers you can get a group of guys and drop the prices enough to get 10+ people from the same neighborhood to let you do their houses on the same day. you can have each worker do 2 houses and give them 80-100 for 6 or 7 hours of work
you have 30 days to return the stuff to home depot and get your money back
