How much pressure washing should cost. Average costs and comments from CostHelper’s team of professional journalists and community of users. Renting a power washer can cost anywhere from $40-$75 a day, depending on your location and the quality of the equipment. However, be sure to read the safety instructions because when used improperly these machines can damage some surfaces or.Cost of power washing driveways. Driveways are tough, which means that you can pressure wash them at a PSI of 3,500 and higher. This speeds up the cleaning process, bringing the average cost down to $221 for most properties. Cost of Power Washing Patios and Decks. Patios and decks can be power washed to achieve a new, clean and fresh look.Pressure washers are convenient tools to have when removing paint, dirt or mold from any number of objects around the home. The Home Depot offers a complete rental selection of pressure washers to choose from including electric, gas, as well as hot or cold water models to help you complete projects big and small.Pressure washers are not toys. At close range, they can remove paint from houses or break up pieces of asphalt tarmac. They’re an excellent choice to clean house siding, treated wooden decks, or vehicles, but always at a distance.Pressure washing a garage floor is an effective way to remove oil stains – often, this is best accomplished by narrowing the water stream and stripping off the top.labor costs: bring in a professional pressure washer for cleaning a deck. pressure washing costs between $60-$100 per hr . An deck of less than 500 sq.ft. will take about 1-2 hours to clean and cost of between $60-$200 .Professional pressure washing costs between $60-$100 per hr. An area of 1200 sq.ft. will take 6 hours for a total cost of between $360-$600 . Equipment rental : pressure washing can be a do-it-yourself project.Pressure Washing Costs The biggest cost with deck pressure washing has to do with the rental of the equipment. If you are able to do the work during the week you may be able to get a lower daily rate than renting such equipment for the weekend.