Much like ACE stated above, we're higher too.In regards to cost per hour I always tell people to figure your costs first and then figure your price per hour. When you figure in phone bill, gas, marketing (signage, business cards, estimate sheet, etc.), electric, supplies, insurance, equipment purchases, vacation, time, and so on you realize that everyone's should be a little different. Before you ask, yes my customers pay for my vacation. You will realize that $40-$50/hr. will just about cover costs and leave very little for profit. I specialize in exterior wood restoration and have performed all types of pressure washing and that is just too low for decks especially. Regardless of how you come up with a price you should arrive at roughly the same price. For instance if you have a deck that is 1000 sq.ft. (floor, rail system, everything) and you charged $1.25/sq.ft then the price would be $1250. That same deck should take approximately 12.5 man hours as well at $100/hr. For most jobs I would charge approximately $100/hr. There are many variables on jobs. Houses that have contemporary architecture with dormers and a lot of roof and ladder work will be more. Decks that need to be stripped multiple times will be more. Take each job individually but these are just some helpful hints. If you are going to do a lot of concrete cleaning you should invest in a surface cleaner to save time and be more profitable as well as perform a much better result.