Find a Licensed Pressure Washing

What a Pressure Washing Does (and What They Don't)

A professional pressure washing service uses high-pressure water—typically between 1,300 and 4,000 PSI—to strip dirt, mold, mildew, algae, oil stains, and oxidation from hard surfaces around your home. The scope of work usually covers driveways, sidewalks, patios, decks, exterior siding, fences, retaining walls, and garage floors. A competent crew will pre-treat surfaces with a detergent or sodium hypochlorite solution (typically a 1–3% concentration for house washing), adjust nozzle tips to match the substrate, and rinse everything clean. Most jobs include moving lightweight patio furniture, covering electrical outlets and light fixtures with plastic, and pre-soaking landscaping to dilute chemical runoff.

What pressure washing does not include: it does not replace paint. If your siding is peeling, pressure washing will strip the loose paint but it won't prime or repaint. It does not seal surfaces. A freshly washed concrete driveway still needs a separate sealer application, which typically costs $0.15–$0.25 per square foot on top of the wash. It does not fix structural problems—cracked concrete, rotted wood, or loose mortar joints will still be there after the water dries, and in some cases high-pressure water makes them worse.

You need a specialty contractor when the job involves surfaces that can be destroyed by standard pressure: stucco over 20 years old, historic brick with lime mortar, natural stone like limestone or sandstone, and cedar shake roofing. These require soft washing at 60–100 PSI with chemical cleaning agents, not brute-force water pressure. If you have lead paint on a pre-1978 home, federal EPA RRP rules require a lead-certified contractor—a standard pressure washer who blasts lead paint into your yard is violating federal law and exposing your family to a documented neurotoxin. Similarly, roof cleaning on asphalt shingles should never be done with a pressure washer above 100 PSI; the Asphalt Roofing Manufacturers Association explicitly warns against it because it strips granules and voids shingle warranties. For those jobs, hire a dedicated soft-wash roof cleaning company.

Common Surfaces and Recommended PSI Ranges

• Vinyl siding: 1,300–1,600 PSI with a 25- or 40-degree nozzle tip
• Concrete driveways and sidewalks: 3,000–4,000 PSI with a surface cleaner attachment
• Wood decks: 500–1,200 PSI with a fan tip; higher pressure gouges wood fibers
• Brick with Portland cement mortar: 1,500–2,500 PSI
• Painted surfaces: 1,200–1,500 PSI max, or you will strip the paint

How to Find, Vet, and Hire the Right Pressure Washing Contractor

Step 1: Build a Candidate List

Start with three sources: Google Business Profile listings filtered by reviews (look for companies with 50+ reviews and a 4.5+ average), Nextdoor recommendations from neighbors in your specific subdivision, and referrals from your local paint store or hardware store. Skip lead-generation sites like HomeAdvisor or Thumbtack unless you enjoy receiving 7 phone calls in 4 minutes from contractors who paid $15–$30 per lead and need to close you fast to recoup that cost. Aim for 3–5 candidates minimum.

Step 2: Verify Licensing

Licensing requirements vary by state and municipality. In Florida, pressure washing requires no state contractor license but many counties require a local business tax receipt. In Texas, no state license is required. In states like California, jobs over $500 require a C-61/D-63 specialty license. Check your state's contractor licensing board website—the specific URL is usually findable by searching "[your state] contractor license lookup." Ask every candidate for their license number and verify it yourself. If they hesitate, move on.

Step 3: Confirm Insurance

This is non-negotiable. A pressure washer can crack your windows, strip your paint, damage your landscaping, or injure themselves on your property. Require two documents: a Certificate of General Liability Insurance with a minimum $1 million per occurrence limit, and Workers' Compensation coverage if they have any employees. Call the insurance company directly to verify the policy is active—certificates can be forged or expired. A legitimate operator pays $400–$1,200 per year for GL insurance; if someone says they "don't need insurance," they're telling you that you'll be paying out of pocket when something breaks.

Step 4: Get Written Quotes with Specifics

Never accept a quote over the phone from someone who hasn't seen the property. A good pressure washing estimate should list: total square footage of each surface, the PSI and cleaning method for each surface, the chemicals being used, estimated time on site, and a total price. Compare quotes by price per square foot, not just the bottom-line number. Average pricing in 2024: house washing runs $0.15–$0.40 per square foot, driveway and concrete cleaning runs $0.08–$0.20 per square foot, and deck washing runs $0.25–$0.50 per square foot. A 2,000-square-foot home exterior wash typically comes in at $300–$700 depending on your market, the number of stories, and the level of grime.

Step 5: Lock Down the Contract

Even for a $400 job, get it in writing. The contract should include: start date, estimated completion time, specific surfaces to be cleaned, chemical products to be used, a damage policy stating what happens if they crack a window or etch your concrete, payment terms (never pay more than 50% upfront; for jobs under $500, pay nothing until completion), and a satisfaction clause. Ask these specific questions before signing:

• "What PSI will you use on my siding?" — If they say 3,000+, walk away. That destroys vinyl and fiber cement.
• "Do you use a surface cleaner on concrete or just a wand?" — A wand leaves tiger-stripe marks. A surface cleaner gives even results. This is the difference between amateur and professional.
• "How do you protect my plants?" — The correct answer is pre-soaking landscaping, covering delicate plants with tarps, and rinsing everything after. Sodium hypochlorite kills plants.
• "Will you move items or do I need to clear the area?" — Most contractors expect you to move vehicles, grills, and heavy planters. Confirm this upfront.
• "What happens if you damage something?" — The answer should be "my insurance covers it" with zero hesitation.

What to Expect During the Job

Arrival and Setup

A professional crew typically arrives with a truck- or trailer-mounted pressure washing unit (not a residential unit from Home Depot), a water tank (250–500 gallons for larger jobs), hoses, surface cleaners, a downstream chemical injector, and multiple nozzle tips. Setup takes 15–30 minutes. They should walk the property with you before starting, noting existing damage—cracks, chipped paint, loose boards—so nobody argues about it later. Good contractors take timestamped photos of pre-existing damage. You should too.

Timeline by Job Type

• House wash (1,500–2,500 sq ft, single story): 1–2 hours
• House wash (2,500–4,000 sq ft, two story): 2–4 hours
• Driveway (400–800 sq ft): 30–60 minutes
• Driveway (800–1,500 sq ft): 1–2 hours
• Deck wash (200–500 sq ft): 1–2 hours including dwell time for chemicals
• Full property (house, driveway, patio, walkways): 3–6 hours

Good vs Bad Workmanship

Good work looks like this: concrete has uniform color with no streaks or stripes, siding is free of green and black with no water forced behind the panels, wood grain on decks is raised slightly but not fuzzed or gouged, and chemical residue is rinsed from all plants and surfaces. Bad work is obvious: tiger stripes on concrete from uneven wand passes, gouged wood, water stains on interior walls from water forced behind siding at too high a PSI, dead landscaping from chemical burn, and etching on soft stone or brick. If you see any of these, stop the job immediately and address it before the crew leaves. Once they drive away, your leverage drops to nearly zero.

Permits

Most residential pressure washing does not require a permit. However, some municipalities have stormwater regulations that restrict where wash water can flow—particularly if it contains oil, grease, or chemical detergents. In cities like Seattle, Portland, and parts of the Chesapeake Bay watershed, wash water containing pollutants cannot enter storm drains. Professional operators in those areas use water reclamation systems or berms. Commercial pressure washing jobs almost always require a wastewater discharge permit. For residential work, ask your contractor if they comply with local stormwater ordinances; if they look confused, that's a red flag.

How to Save Money Without Getting Burned

Timing

Pressure washing is seasonal. In most markets, peak season runs from March through June. Book in January or February and you can often negotiate 10–20% off because crews are hungry for work. Late fall (November) is another discount window—after the rush but before winter shutdowns in cold climates. Avoid booking the week before a holiday or a home sale; urgency pricing adds 15–25% to any quote.

Bundling

Bundling multiple surfaces into one visit saves you real money because the contractor's setup and travel time is fixed. A house wash alone might cost $350. Add the driveway for $150 more and the patio for $75. Separately, the driveway and patio would run $200 and $125. That's a savings of roughly $150, or about 22%. Always ask: "What's the price if I add the driveway, sidewalks, and fence?" Every contractor will discount bundled work because their marginal cost per additional surface is mostly just time and chemicals.

Materials and Negotiation

There's no material cost for you to supply—the contractor brings everything. But you can save by being ready: move your cars, clear the patio, trim back bushes from the house by 12 inches so they don't have to work around obstacles. This saves them 20–30 minutes, and some contractors will knock $25–$50 off for a well-prepped property. On negotiation: don't ask for a discount—ask for added value. "Can you include the back fence if I go with you today?" works better than "Can you take $50 off?" Contractors protect their price but will often throw in 200–300 square feet of extra cleaning to close the deal.

What to Avoid

Don't hire the cheapest bid if it's more than 30% below the others. In pressure washing, low price usually means no insurance, a residential-grade machine that takes 3x as long, and corners cut on chemical application. You'll pay more to fix the damage than you saved on the bid.

What Homeowners Insurance Covers

Scenarios Typically Covered

If a pressure washing contractor damages your property—cracks a window, dents siding, or breaks a light fixture—their general liability insurance should cover it, not yours. File the claim with their insurer, not yours. If they don't have insurance (and you hired them anyway), your homeowners policy may cover the damage under your dwelling coverage (Coverage A) or other structures (Coverage B), minus your deductible, which averages $1,000–$2,500. However, your insurer may then raise your premium or non-renew your policy for filing what they consider a maintenance-related claim.

Scenarios Not Covered

Homeowners insurance does not cover damage from gradual neglect. If mold, mildew, or algae has damaged your siding over years, your policy won't pay for cleaning or replacement—that's classified as maintenance. If you pressure wash your own home and damage it, your policy does not cover self-inflicted damage. If a contractor's chemicals kill your landscaping, that's a liability claim against their insurance, not a homeowners claim.

How to Document and File

Take photos and video of all surfaces before the job starts. If damage occurs, photograph it immediately with timestamps. Get a written statement from the contractor acknowledging the damage. File a claim with their insurance carrier using their Certificate of Insurance, which should list their policy number and carrier's claims phone number. If they refuse to cooperate, file a complaint with your state's consumer protection office and consider small claims court for damages under $5,000–$10,000 (limits vary by state).

DIY vs Hiring a Pressure Washing Contractor: The Honest Assessment

What You Can DIY Safely

You can pressure wash your own driveway, sidewalk, patio, and ground-level concrete with a consumer-grade electric unit (1,300–2,300 PSI) rented from Home Depot for $40–$90 per day. Flat concrete at ground level is hard to screw up if you use a surface cleaner attachment ($50–$80 to buy) and keep the nozzle moving. You can also wash outdoor furniture, trash cans, and garden tools with a standard garden hose pressure nozzle or an electric unit on the lowest setting. No permits are required for residential DIY pressure washing in the vast majority of municipalities.

What You Should Not DIY

Do not DIY house washing, especially on two-story homes. Using a pressure washer on a ladder is one of the most dangerous things a homeowner can do—the recoil force from even a 2,500 PSI unit is enough to knock you off balance. Emergency rooms see an estimated 6,057 pressure washer injuries per year according to the Consumer Product Safety Commission. Do not DIY wood deck washing unless you have experience; too much pressure destroys wood fibers and creates a surface that splinters and holds moisture, accelerating rot. Do not DIY brick, stucco, or any surface where the wrong PSI can cause permanent and expensive damage. And absolutely do not DIY a roof wash—walking on a wet roof with a pressure washer hose is a fall-risk scenario that kills people.

The Cost Math

Renting a gas-powered unit capable of handling a full house wash costs $80–$150 per day. Add $30–$50 in chemicals, $50–$80 for a surface cleaner, and half a day of your time. You're at $160–$280 all-in, but without insurance, without experience reading substrates, and without a guarantee. A professional charges $300–$700 for the same house wash with insurance, proper equipment, and accountability. For a driveway-only job, DIY makes financial sense: $50–$90 rental vs $150–$300 professional. For anything above ground level or on a delicate surface, hire a pro.