Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Job price
$216
Pre-minimum calculated price
$216
Effective price per sq ft
0.180
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How to use this
- 1Enter surface area (sq ft).
- 2Enter base rate per sq ft ($).
- 3Enter surface type.
- 4Enter minimum job charge ($).
- 5Read your job price on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
Pressure washing pricing needs to account for surface type since concrete, wood decking, and vinyl siding all wash at different speeds and use different chemical dilutions. This calculator applies a base per-square-foot rate adjusted by a surface difficulty multiplier, then adds a minimum job charge so small jobs like a single walkway don't get underpriced relative to the drive time and setup they require.
Worked example
Using the values the calculator loads with:
Inputs
- Surface area: 1200 sq ft
- Base rate per sq ft: 0.18 $
- Surface type: Vinyl/aluminum siding
- Minimum job charge: 150 $
Results
- Job price: $216
- Pre-minimum calculated price: $216
- Effective price per sq ft: 0.18
What each field means
Inputs
- Surface area (sq ft)
- The surface area used in the calculation, measured in sq ft. Starts at 1200 sq ft so you have a working example on load.
- Base rate per sq ft ($)
- The base rate per sq ft used in the calculation, measured in $. Starts at 0.18 $ so you have a working example on load.
- Surface type
- Pick the option that matches your situation — the maths changes per option. Choices: Concrete driveway/patio, Vinyl/aluminum siding, Wood decking / fencing, Roof soft wash.
- Minimum job charge ($)
- The minimum job charge used in the calculation, measured in $. Starts at 150 $ so you have a working example on load.
Results
- Job price
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Pre-minimum calculated price
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Effective price per sq ft
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why does roof soft washing carry the highest multiplier?
Roof soft washing requires low-pressure application with specific chemical mixes (typically sodium hypochlorite blends) to kill algae and lichen without damaging shingles, plus significant safety setup for ladder and harness work. It takes longer per square foot than a driveway and carries higher liability, which justifies pricing it well above flatwork cleaning.
What's a typical per-square-foot rate range?
Concrete driveways and patios commonly run $0.12-$0.25 per sq ft, house siding $0.15-$0.30, wood decking $0.35-$0.60 due to slower low-pressure technique needed to avoid damaging wood fibers, and roof soft washing $0.30-$0.75 depending on pitch and access difficulty.
Why have a minimum job charge at all?
Drive time, equipment setup (hose runs, water source hookup, chemical mixing), and teardown take roughly the same amount of time whether you're washing 200 square feet or 2,000. Without a minimum, small jobs like a single walkway or a small deck section can lose money once true time cost is accounted for.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Pressure Washing Square Foot Pricing Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/pressure-washing-square-foot
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/pressure-washing-square-foot" target="_blank" rel="noopener">Pressure Washing Square Foot Pricing Calculator — RevenueLab</a> (2026).</p>
Source: [Pressure Washing Square Foot Pricing Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/pressure-washing-square-foot) (2026).