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.
1 Washing the exterior of a 2,100-square-foot home runs around $150-$750 or more. 2  Having an entire home pressure-washed (driveway, walkways, house, roof, deck, porch, patio, etc.), can be $500-$1,400 or more, depending on size, condition and local rates. Buying a basic residential pressure washer with an electric motor starts around $70-$200, depending on size and capacity. 2  A gas-powered residential model usually has a higher pressure rating than an electric machine, and is about $300-$1,000.