Cost to Power Wash a Driveway

Updated September 2026 · Home Project Resources

The cost to power wash a driveway is priced almost entirely off square footage, then adjusted for surface type, how bad the staining is, water access, and whether the crew brings hot water or cold. Most companies quote per square foot with a minimum charge that a typical two-car driveway barely clears. That is why a small driveway and a medium one often land at similar numbers, and why bundling the walkway, patio, and sidewalk into the same visit gets you far more clean surface for the same trip.

Measure first. An estimator who quotes without an area figure is quoting a guess, and you have no way to compare that to anyone else.

Updated September 2026

A note on numbers. You will find specifications, coverage rates, timings, and quote line items on this page, not dollar figures. Pressure washing rates vary by region, season, and how a company handles water and waste. Use the comparison checklist below on three written quotes.

Start with the area. Run your driveway dimensions through the free square footage calculator so every bid gets the same number. Include the apron at the street and any parking pad, because contractors count those and homeowners usually forget them.

What drives the cost to power wash a driveway

Seven variables move the number. Knowing them lets you read a quote instead of just receiving one.

Square footage. The base unit. A single-car driveway around 10 ft by 24 ft is 240 square feet. A standard two-car driveway at 20 ft by 30 ft is 600 square feet. A long rural drive can pass 2,000.

Surface type. Broom-finished concrete cleans fast and takes pressure well. Pavers need lower pressure plus joint sand replacement afterward. Asphalt is soft and gets cleaned at low pressure with chemistry doing most of the work. Exposed aggregate and stamped concrete need care so the surface does not get etched.

Stain load. A gray film of algae and road dust is a routine pass. Deep oil, rust from a fertilizer spreader, tire marks, tannin from leaves, and battery acid are all separate treatments with their own dwell times.

Water access. Most trailer rigs need a working spigot supplying roughly 4 to 8 gallons per minute. If your spigot cannot keep up, the crew has to bring a buffer tank or work in stop-and-start cycles, which adds time.

Hot water vs. cold. Hot water units cut degreasing time on oil dramatically. Companies running them charge more per square foot and are worth it on an oil-stained garage apron.

Access and obstacles. Parked cars, tight side yards, steep grades, low overhead lines, and landscaping that needs pre-wetting and rinsing all add labor.

Waste water rules. Some jurisdictions require wash water to be kept out of storm drains, especially where degreasers are involved. The EPA stormwater program is the framework local rules are built on. Recovery mats and vacuum systems add equipment and time to a bid.

The specs that separate a real quote from a lowball

Pressure washing looks like one service and is actually four different levels of work. Ask for these specs in writing.

GPM matters more than PSI on flatwork. Pressure breaks the bond between dirt and concrete, but flow is what carries the dirt away. A 4 GPM machine at 3,000 PSI cleans a driveway roughly twice as fast as a 2 GPM machine at the same pressure. When two bids are far apart, the flow rate usually explains it.

A surface cleaner is not optional on a driveway. That is the round disc attachment with rotating jets under a shroud. It cleans evenly at a controlled distance, which is what prevents the zebra striping that a hand-held wand leaves. If a bid does not mention a surface cleaner, ask.

Too much pressure damages concrete. Above roughly 3,000 PSI held close, the wand starts eroding the cement paste and exposing sand. That damage is permanent, it collects dirt faster afterward, and it is the most common complaint after a cheap wash.

Surface-by-surface guide

Pavers deserve extra attention. Washing blows sand out of the joints, and joints without sand let pavers shift and weeds take hold. A proper paver cleaning quote includes replacing polymeric sand and, ideally, a light compaction pass. If you are pricing paver work in general, our paver patio cost breakdown covers the base, edge restraint, and sand layers in detail.

Stain removal is a separate job from cleaning

General washing and stain removal get quoted together and are not the same work. Each stain type has its own chemistry and its own dwell time, and none of them come out with pressure alone.

Oil and transmission fluid. Needs a degreaser, a dwell period of 10 to 20 minutes, agitation with a stiff brush, and hot water if available. Old, deeply soaked oil may lighten by 70 to 90 percent rather than disappear. Multiple treatments help. A poultice of absorbent powder and solvent left overnight pulls out what surface cleaning cannot.

Rust. Comes from fertilizer, metal furniture, and well water irrigation. It needs an oxalic or similar acid-based rust remover, not pressure. Rust removers must be neutralized and rinsed thoroughly, and they can lighten colored concrete.

Tire marks. Plasticizer transfer from hot tires. Citrus degreaser plus agitation, and repeat visits sometimes.

Algae, moss, and mildew. The green or black film in shaded areas. A sodium hypochlorite solution with a surfactant, applied at low pressure and given 5 to 10 minutes of dwell time, kills the organism so it does not regrow in three weeks. Cleaning without a biocide is why some driveways look green again by the next season.

Leaf and tannin staining. Brownish shadows under trees. Alkaline cleaner plus dwell, then rinse.

Efflorescence. The white chalky bloom is salt migrating out of the concrete, not dirt. It needs a specific efflorescence remover, and it comes back if moisture keeps moving through the slab.

Ask any bidder which stains they are actually promising to remove versus reduce. A written scope that says "clean driveway" and a written scope that says "clean driveway, degrease and treat three oil spots, expect 80 percent reduction" are different products.

Worked example: a 20 ft by 30 ft two-car driveway

Here is how a professional builds the time estimate, which is what the price is built on.

Step 1: area. 20 ft x 30 ft = 600 square feet, plus a 12 ft by 15 ft apron at the street = 180 square feet. Total: 780 square feet.

Step 2: pre-treatment. Apply biocide and pre-treat at roughly 1 gallon of mixed solution per 200 square feet. 780 ÷ 200 = about 4 gallons of mixed solution. Dwell time 10 minutes.

Step 3: surface cleaning pass. A 20-inch surface cleaner behind a 4 GPM machine covers roughly 1,000 to 1,200 square feet per hour on lightly soiled concrete, less on heavy growth. 780 ÷ 1,000 = about 45 minutes of cleaning, call it an hour with overlap.

Step 4: edge and detail work. Wand work along the garage door, the edges, and the expansion joints adds 20 to 30 minutes on a driveway this size.

Step 5: oil treatment. Three oil spots at 10 to 20 minutes dwell each, plus agitation and a hot rinse: 30 to 45 minutes.

Step 6: rinse and cleanup. 15 minutes, plus water recovery if required locally.

Total on-site time: roughly 2.5 to 3 hours for one technician, plus setup and teardown.

Water used: at 4 GPM for about 90 minutes of trigger time, roughly 360 gallons. That is a real number worth knowing if you are on a well or a metered system with tiered rates.

That time estimate is the whole quote. When two bids differ, they differ because one of them planned 45 minutes and the other planned 3 hours, or because one has a 4 GPM machine and the other has a 2 GPM box-store unit.

DIY versus hiring it out

Renting a machine is genuinely viable on a clean-ish concrete driveway. Here is the honest comparison of what you take on.

Three DIY rules that prevent the most common damage. Keep the wand tip at least 8 to 12 inches from concrete and never dwell in one spot. Use a 25-degree or 40-degree tip on flatwork, never the red 0-degree tip. And work in overlapping passes in one direction so the pattern is even, since striping shows up in raking sunlight even when the driveway looks fine while wet.

Wear closed-toe boots and eye protection. A pressure washer at 3,000 PSI can inject water and debris under skin, which is a genuine emergency room injury, not a scrape.

Timing: when to wash and what comes next

Season. Late spring and early fall are ideal. You want a day above 50 F with no rain for 24 hours and, if sealing follows, a longer dry window.

Frequency. Most driveways benefit from a wash every 1 to 2 years. Shaded, tree-covered, or damp properties may want annual cleaning to keep organic growth from taking hold.

Order of operations. Wash first, let the slab dry, then seal. Concrete needs roughly 24 to 48 hours of dry weather after washing before sealer goes on, and longer in humid conditions. Sealing over trapped moisture causes cloudiness and peeling. Our step-by-step guide on how to seal a driveway covers cure windows, coverage rates, and crack filling.

Bundle the trip. Since mobilization is a fixed cost, adding the front walkway, patio, and garage floor to the same visit lowers your effective rate per square foot substantially. Measure all of them at once.

How to compare three pressure washing quotes

• Same square footage on all three. Give every bidder your measured number so nobody is quoting a different driveway.
• Written surface list. Driveway only, or driveway plus apron, walkway, and steps.
• Machine specs. Ask for GPM, PSI, and whether the unit is hot water.
• Surface cleaner confirmed. In writing, for the flatwork.
• Chemistry named. Pre-treatment biocide, degreaser, rust remover, and post-treatment if offered.
• Stain expectations. Which stains are removal and which are reduction.
• Joint sand. For pavers, whether re-sanding is included and with what product.
• Water source and waste handling. Who supplies water, and how wash water is managed.
• Insurance. General liability at minimum. Overspray onto a neighbor's car is a real claim.
• Plant protection. Pre-wetting and rinsing landscaping near the work.

One quiet warning sign: a bid that is dramatically faster than the others. Speed on flatwork comes from flow rate, and flow rate costs equipment. Speed that comes from skipping pre-treatment leaves you with a driveway that looks great for a month.

Frequently asked questions

How long does power washing a driveway take?

A standard two-car driveway of roughly 600 to 800 square feet takes a professional about 2 to 3 hours including pre-treatment, dwell time, cleaning, detail work, and cleanup. DIY with a rental usually takes 4 to 6 hours the first time.

How often should a driveway be pressure washed?

Every 1 to 2 years for most homes. Shaded driveways under trees, or properties in humid regions where algae returns quickly, do better on an annual schedule. Washing more often than yearly wears the surface without much benefit.

What PSI is safe for a concrete driveway?

Stay at or under about 3,000 PSI with a 25-degree or 40-degree tip held 8 to 12 inches away. Higher pressure held close erodes the cement paste and exposes the sand, which is permanent and makes the slab dirty faster afterward.

Will pressure washing remove old oil stains?

It reduces them. Fresh oil comes up well with a degreaser and hot water. Oil that has soaked in for years typically lightens 70 to 90 percent, and a poultice left overnight pulls out more. Anyone promising complete removal of an old stain is overselling.

Should I seal the driveway after washing it?

Sealing after washing is the right order, but let the slab dry 24 to 48 hours first. Sealing over trapped moisture causes cloudiness and peeling. Concrete sealers typically last 2 to 5 years, and asphalt sealers 2 to 3.

Can I pressure wash pavers?

Yes, at lower pressure, roughly 1,500 to 2,000 PSI with a surface cleaner. Washing removes joint sand, so plan on replacing it with polymeric sand once the pavers are fully dry. Skipping the re-sand lets pavers shift and weeds return.

Does pressure washing damage asphalt?

It can. Asphalt is soft and petroleum-based, so keep pressure around 1,200 to 1,500 PSI, use a wide fan, keep the tip moving, and lean on degreaser dwell time rather than force. Aggressive washing loosens the aggregate at the surface.

Is it cheaper to wash the driveway and walkway together?

Yes, per square foot. Setup, water hookup, and travel are fixed costs on every visit, so adding surfaces to one appointment spreads those costs over more area. Measure the walkway, patio, and steps before you request quotes.

Related: Concrete driveway replacement cost covers what to do when cleaning cannot save the slab, paver driveway cost breaks down the paver alternative, stamped concrete walkway cost explains sealed decorative surfaces that need gentler cleaning, and the square footage calculator gives you the one number every bid should share.