Handbook / Business ideas, examined closely
Starting a pressure washing business: what to know before you buy a machine
Pressure washing attracts new business owners because the results are dramatic and the service is easy to explain: dirty surface in, clean surface out. You can start with one machine and a vehicle. But a pressure washer is a powerful tool, and the business carries risks that are easy to underestimate: damaged property, injuries, old lead paint and dirty water running into storm drains. This guide covers what to understand before you buy a machine and take your first paid job.
Decide what you will clean
Each surface needs different technique and carries different risk:
- Concrete driveways, paths and patios: the most forgiving, and a good place to start.
- Wooden decks and fences: easily damaged by too much pressure; often need lower pressure and care.
- House siding: commonly cleaned with low pressure and cleaning solutions; risk of forcing water behind siding.
- Roofs: specialist work with fall risk and damage risk; many operators avoid it.
- Painted surfaces on older buildings: raise lead paint rules, covered below.
- Commercial work: parking areas, storefronts and fleets, often with stricter client requirements.
Starting with hard surfaces and adding others as you gain skill is a sensible path. Write down what you refuse to do as well as what you offer.
Learn on your own property
Before charging anyone, practise on surfaces you own. Learn how nozzle choice, distance and pressure affect different materials. Note the settings that clean without etching concrete or splintering wood. Damage caused while learning on your own patio costs you nothing but time. Damage on a customer's deck costs money and reputation.
Equipment
A typical starting setup includes:
- a pressure washer suited to the work, with appropriate pressure and flow
- nozzles or tips for different jobs, and a surface cleaner attachment for flat areas
- hoses, a water supply plan, and fittings
- cleaning solutions and a way to apply them at low pressure
- personal protective equipment: eye protection, gloves, non-slip footwear, hearing protection for loud engines
- a vehicle or trailer to transport it securely
Buy for the surfaces you will actually clean. Larger machines cost more and are not needed for every job.
Lead paint on older homes
EPA's Renovation, Repair and Painting Rule requires that anyone paid to perform work that disturbs painted surfaces in homes, childcare facilities and preschools built before 1978 be certified, with workers trained in lead-safe work practices. EPA notes that roughly three-quarters of US homes built before 1978 still contain some lead-based paint.
Pressure washing painted surfaces, especially to remove peeling paint, can disturb paint. If you plan to work on painted surfaces of older buildings, read EPA's guidance and find out whether your work requires certification. Otherwise, decline jobs that involve stripping or blasting paint on pre-1978 buildings.
Water runoff
Wash water can carry dirt, oil, cleaning chemicals and paint particles into storm drains, which often lead directly to streams and rivers. Many cities and counties regulate what may be discharged into storm drains. Ask your local public works or environmental department what applies to mobile washing in your area, and plan how you will control runoff, especially on commercial jobs.
Chemicals and safety
Cleaning solutions carry labels and safety data sheets under OSHA's hazard communication standard. Read them, follow dilution instructions, protect plants and pets, and never mix products unless the label permits it. Pressurised water can cause serious injury: never point the wand at people, keep bystanders away and work from stable footing. Ladders and pressure washers together raise fall risk; many operators avoid using pressure washers from ladders.
Licenses and insurance
Check your city and county for business license requirements, as SBA advises. Then insurance: you will work on customers' property with a tool that can break windows, strip paint and flood interiors. SBA describes general liability insurance as covering third-party bodily injury and property damage claims, among others. Ask insurers about pressure washing specifically, since some policies may exclude it or treat it as higher risk. Commercial clients may require a certificate of insurance before you start.
Pricing
Price by surface type and size, based on how long each takes you, plus travel and setup:
Worked example (invented figures): a two-car driveway takes 60 minutes plus 20 minutes setup and travel. At a needed $55 per working hour, the floor is 1.33 hours × $55 ≈ $73. The operator prices driveways of that size at $85, and quotes decks and siding separately after seeing them.
Always see the surface, in person or in clear photos, before quoting. Condition varies enormously.
Getting work
Before-and-after photos, taken with permission, are the strongest marketing in this trade. Neighbours of a satisfied customer notice the difference. Seasonal timing matters too: spring cleaning and pre-sale property preparation bring demand in many areas.
Learn on your own surfaces, refuse what you are not ready for, check lead and runoff rules, and insure before you start.
Questions people ask
Do I need a license to pressure wash?
Often a general local business license is enough, but rules vary. Some areas regulate wash water discharge, and work that disturbs paint on pre-1978 homes, childcare facilities and preschools falls under EPA's lead renovation rule, which requires certification for people paid to do it.
Can pressure washing damage property?
Yes. Too much pressure or the wrong nozzle can etch concrete, splinter wood, strip paint, force water behind siding and break seals. Learn on your own surfaces and use the lowest effective pressure.
How do I price jobs?
By area and surface type, based on the time each takes, plus setup and travel. A driveway, a deck and house siding take different time and risk, so price them separately.
What about chemicals?
Many operators use cleaning solutions with low pressure for siding and roofs. Read product labels and safety data sheets, protect plants and people, and check local rules about runoff.
Do this week
- List the surfaces you will clean and the ones you will refuse, such as old painted siding or delicate roofing.
- Practise on your own driveway and patio, and note the pressure and nozzle settings that work without damage.
- Ask your city or county whether wash water discharge to storm drains is restricted.
- Read EPA's renovation, repair and painting rule summary before taking work on pre-1978 painted surfaces.
- Get two liability insurance quotes that name pressure washing as the activity.
Sources read for this page
- EPA: lead renovation, repair and painting program
- SBA: get business insurance
- SBA: apply for licenses and permits
- OSHA: hazard communication
Published November 8, 2026. Sources checked November 8, 2026. Rules, limits and forms change; the linked page is the authority.