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.
Pressure washing prices. Nationally, Angie's List members reported spending about $338 on average for professional pressure washing jobs last year. In the Chicago area, Ward says pressure washing prices are around $250 to $300 for the average 2,000-square-foot home.