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How to start a pressure washing business

Updated 2026-09-04 / 11 min read

Photograph-style truck rig with pressure washer on clean concrete
Business & Operations
A pickup carrying the whole first rig — machine, hose reel and tanks — parked on the street where the first job is.

Registering the business

The paperwork is genuinely light in most states, and it is worth doing properly on day one rather than retrofitting it after your first commercial enquiry asks for a W-9 and a certificate of insurance.

  • Entity. An LLC is the common choice for the liability separation. Filing fees and annual reports vary widely by state; check your own Secretary of State.
  • EIN. Free from the IRS, takes minutes, and you need it for a business bank account.
  • Local licence. Many cities require a general business licence for trades operating within the limits. Ask the city, not the internet.
  • Sales tax. Whether exterior cleaning is taxable is a state question and sometimes a city one. Register if it is; do not guess a rate from a template.
  • Contractor registration. A few states treat exterior cleaning as contracting. Worth one phone call before you advertise.

Every one of these varies by state

This site does not publish state-specific requirements, because they change and a stale figure is worse than none. Treat the list above as the set of questions to ask, and get the answers from your own state and city.

The equipment floor

Photograph-style truck rig with pressure washer on clean concrete — close detail
A rig that can do residential work end to end is a shorter list than most people expect.

The honest minimum to do residential work properly, in rough order of importance:

ItemWhy it is on the list
3,000–3,500 PSI at 4 GPM, belt driveRuns a 20 in disc; belt drive survives daily use
20 in surface cleanerThe difference between a business and a hobby on flatwork
Downstream injector + soap tipTurns the machine into a soft-wash rig for the price of a fitting
150–200 ft of hose, reelReach without moving the truck
Nozzle set, sparesThey wear; a worn tip cleans unevenly
Chemical: SH, surfactant, degreaserThree products cover most residential work
Ladder, fall protection, eye and hand protectionNot optional, and insurers ask
Measuring wheelPays for itself in the first month of accurate quotes

Buy the flow, not the pressure. A machine that cannot drive a surface cleaner leaves you doing driveways with a wand, and that is not a business.

Insurance, before the first job

General liability is the baseline and it is what every commercial client will ask to see. Consider care, custody and control cover as well: standard liability often excludes damage to the very property you are working on, which is exactly the risk in this trade — the etched deck, the water inside the wall, the shingles you took granules off.

Get the certificate before you advertise, not after somebody asks. It is also worth reading what the policy says about height work, because a large share of exterior cleaning happens from a ladder.

Water, waste water and the rules

Photograph-style truck rig with pressure washer on clean concrete — second view
The whole rig working — truck at the kerb, hose out, half the path done.

Two separate questions, and new operators usually only think about the first.

Supply. Most residential jobs run off the customer’s spigot. A buffer tank makes you independent of a weak supply and lets you take jobs with no water at all — and it is a line item on those quotes, not a courtesy.

Discharge. EPA’s stormwater guidance is that untreated wash water carrying soaps, solvents, detergents, sediment or grease should not reach a storm drain, surface water or groundwater; municipal permit holders treat it as an illicit discharge, and the best-practice route is on-site treatment or the sanitary sewer. State and local rules differ and are what you will actually be held to. One call to your local water authority, made before your first commercial bid, is enough.

Lead paint is a licensed question

Pressure washing a building painted before 1978 can disturb lead paint. EPA’s renovation rule requires the work area to be isolated so no dust or debris — including in the waste water — leaves it. In many states this is certified work. Ask the age of the paint before you quote an old house.

PSI & nozzle quick reference

0 degRed
Spot jet. Etches most surfaces.4000 PSI
15 degYellow
Stripping bare concrete.4000 PSI
25 degGreen
General concrete and walkways.3500 PSI
40 degWhite
Siding, wood, vehicles.1500 PSI
~65 degBlack
Detergent draw, low pressure.500 PSI

The first ten customers

Equipment is the easy part. Ten paying customers is the part that decides whether this becomes a business, and it costs time rather than money at the start.

  • Do three jobs at cost for photographs. Not free — at cost, with an invoice. You need before-and-afters more than you need the margin.
  • Work one street at a time. A driveway being cleaned is the best advertisement in the trade. Knock either side while the machine is running.
  • Google Business Profile before anything else. It is where local searches land, and it is free.
  • Ask for the review on the day, standing on the clean driveway, phone in hand. A week later it never happens.
  • Route density beats volume. Six jobs in one suburb pays better than ten spread across a county, because driving is unbilled.

Price from your own costs, not from a forum

Work out your cost per billed hour before you quote anything. It takes twenty minutes and it is the difference between a busy season and a profitable one.

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