How Long Does Pressure Washing Take?

A house wash: 30 to 40 minutes

For a typical 3,000 square foot single-family home, the wash itself is a half-hour to forty-minute job. Most homeowners brace for an afternoon of noise, hoses dragged across the lawn and furniture moved twice. It is finished long before that. The speed is not corner-cutting — it is equipment. A professional soft-wash system applies cleaner and rinses it away at a volume a rental machine cannot come close to, and volume is what actually moves dirt off a wall.

A driveway: about ten minutes

A standard two-car driveway comes in around ten minutes, sometimes under. That number tends to insult anyone who has spent a Saturday inching a wand back and forth across their own concrete. The difference is a surface cleaner: a hooded attachment with spinning jets that cleans a wide path in one even pass, instead of the stripe-by-stripe crawl a wand forces on you. That is also why professional concrete work comes out one uniform color rather than zebra-striped. The full method is in our guide to cleaning a driveway. Oil is the one exception to the ten-minute rule — oil stains need their own treatment, not just more time.

Why the drive is the longest part of the day

It sounds like a joke and it is not. On a normal residential route, the truck spends more time on Kansas City roads than it does washing. That is worth knowing for one practical reason: if you are having the house done, adding the driveway, the patio or the gutter exteriors to the same visit costs very little extra time, because the expensive part — getting a truck, a tank and a crew to your address — has already happened. Booking the same work as three separate visits later in the year is the slow, costly way to do it.

Why it goes so much faster than the weekend version

Two numbers describe every machine: PSI, the force, and GPM, the gallons per minute. PSI breaks the bond between grime and surface; GPM carries the grime away. A consumer rental moves roughly 2.5 gallons per minute. Professional machines pump 5.5 to 8. That single difference is why the same wall takes a professional a fraction of the time at lower pressure — the water is doing the work rather than the force. If the distinction is new to you, start with what power washing actually is.

What genuinely makes a job take longer

Square footage is the obvious one, and it scales roughly as you would expect. Beyond that: heavy algae, lichen or years of neglect need dwell time, because the cleaner has to sit and do its job before anything is rinsed — rushing that step is how companies end up scrubbing at pressure and damaging the surface. Height adds time. Delicate materials slow things down on purpose: stucco and Hardie board are handled deliberately because they are the easiest exteriors to ruin, and roofs are never cleaned with pressure at all. And if the soffits are full of nests and webbing, that gets dealt with during the wash too.

Commercial work: bigger numbers, identical math

The same equation runs at scale. The Kansas City Public Library parking garage — 350,000 square feet, cleaned in six hours — and the garage at Halls at Crown Center, 600,000 square feet across four days, both came down to flow rate and the right surface cleaner rather than more hours. For property managers pricing out a schedule, the commercial cost guide covers how the numbers work.