Pressure washing cost depends on surface type and square footage, but the bigger quality variable is technique — too much pressure damages surfaces rather than cleaning them.
What to look for
- PSI and technique matched to the surface — wood siding, concrete, and roofing all need different approaches, and roofing in particular should use low-pressure "soft washing," not high-pressure spray.
- Cleaning solution used, especially near plants or pets.
- Areas covered specified clearly — driveway, siding, deck, roof are often quoted and priced separately.