Tom Bosley -- who famously played Mr. Cunningham on  Happy Days  -- died this morning at a hospital in Rancho Mirage, CA ...
Average estimates: $250 to $420. Power washers can have pressures of 4,000 psi (pounds per square inch) to lesser pressures of maybe a few hundred and run by gas or electric. This means that professionals will probably use one with less pressure to clean a deck and maybe one with higher pressure to clean a patio.
Cost of Power Washing Fences. One of the most common power washing projects is to clean exterior fences, specifically wooden ones. Since fences can handle greater pressure than houses, for example, the job should be relatively quick and cost around $223 for around five hours of labor.