Who we serve / Pressure washing
Estimates and invoices for pressure washing, surface by surface.
A pressure washing job looks simple until the customer says "I thought that price covered the back patio too." This page is about writing the job down so that it does not come to that.
By Abrar · Updated · 8 min read
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The short answer
Price a pressure washing job by surface, with the area and the method written beside each one, and say which surfaces are not included. Write down damage and loose paint that is already there before you start. Get any extra surface agreed before you wash it. InvoiceWren holds the estimate, the changes and the payment on one job, with your photos beside each line.
How a pressure washing job runs on paper
The work takes a few hours. The paperwork decides whether the customer and you remember it the same way afterwards.
- 1
The call
A customer wants a driveway, a house, a deck or a fence cleaned. Write down the address and which surfaces they mean. Ask whether they have a second price from someone else.
- 2
The look and the measure
Walk the property. Measure each surface in square feet, and write down what is there already: stained wood, loose paint, cracked glass, a window that does not seal. Take photos of it.
- 3
The estimate
One line for each surface, with its area, the method (hot water, soft wash, plain water) and the price. Write what is not included, such as the fence or the roof.
- 4
The yes
Have the customer sign the estimate. In New York, a written contract is required for home improvement work that costs more than $500, and it must describe the work and the materials [1].
- 5
The work
Wash the surfaces on the estimate. Keep wash water and cleaner away from storm drains where your city says to.
- 6
The extra surface
The customer says "while you are here, the back patio". Write it as its own line, with its price, and get a yes before you start. In New York, any verbal change to the project must be added to the written contract [2].
- 7
The invoice
The estimate, plus each approved extra, less any deposit. Show tax on its own line if your state taxes the service.
- 8
The payment and the receipt
Record the date, the amount and how you were paid, and give a receipt.
Where pressure washing paperwork goes wrong
Each is a surface, a risk or a rule that the estimate can name before the work starts.
One number for the whole job
"I thought that price covered the back patio too." The quote said one number and no surfaces. Now you either wash the patio for free or argue.
What to do: Write one line per surface, with the area. Write what is not included. A surface you add later is its own line and its own yes.
A damage claim after the job
High pressure can harm wood, and water can get under siding. An insurer's consumer guide says wood could be damaged from too much pressure, a pressure washer could break a window, and water could get under the siding and start mold [3]. A damage claim can cost more than the job.
What to do: Write the method on the estimate, such as "soft wash on wood". Write the damage and loose paint that was there before you started, with photos, and have the customer see it.
Wash water that goes down a storm drain
The Environmental Protection Agency says stormwater in municipal storm drains is often discharged untreated into local water bodies [4]. The Clean Water Act prohibits discharging pollutants through a point source into waters of the United States without a permit [5]. The rule for pressure washing is set locally: the city of Roseville, California, lists wash water from power washing parking lots as not allowed in the storm drain [6].
What to do: Ask your city or county what it requires. Put a line in the estimate that says how wash water is handled, and who pays for collecting it.
Three quotes, and one is far lower
The cheap bidder leaves out the cleaner, the second pass or the cleanup. The customer compares one number with another. The New York Attorney General advises getting written estimates from at least three contractors [2].
What to do: Spell out surfaces, areas, method and add-ons, so that your quote can be compared line by line with theirs.
Chemicals and injuries
The CDC says the strong spray from a pressure washer can cause serious wounds that might first appear minor [7]. OSHA says employers with hazardous chemicals must have labels and safety data sheets for their exposed workers and train them [8].
What to do: Keep the safety data sheets for what you use in the truck. Label containers. Keep a short note of who was trained.
Tax on one job and not on the next
In New York, maintaining, servicing and repairing real property are services subject to sales tax, and the end result decides it [9]. In Texas, keeping the inside and outside of a building clean is a taxable real property service [10]. Neither source names exterior pressure washing, so the answer for a given job is not settled.
What to do: Ask your state tax office. Where tax applies, show it on its own line.
What InvoiceWren does for a pressure washing company
Each surface, each photo and each extra is written down and agreed from the driveway.
An estimate with one line per surface
Add the house, the driveway, the patio and the fence as their own lines, each with its area and price. Your customer reads it and signs on their phone.
Photos of what was already there
Add up to 3 photos to a line. The stained deck board, the cracked window and the loose paint are on the paper before you start.
Saved items for the surfaces you quote every week
Save "driveway per 100 sq ft", "house wash, soft wash" and "deck cleaning". The next estimate takes a tap per line.
Change orders for the extra surface
The customer adds the back patio on the day? Send a change order. They approve it on their phone before you wash it, and it is not counted as approved until they do.
A deposit, then a balance that adds up
Send a deposit invoice from the approved estimate. The final invoice shows the estimate, each approved change and each payment, line by line.
Paid by Zelle, bank transfer or your own link
Your customer pays you directly and we take no fee. They tap "I've paid", you check your account and confirm, and the receipt goes out.
Reminders that stop when they pay
If an invoice is late, InvoiceWren emails your customer for you. You set the schedule, and it stops once you confirm the payment.
Estimates and approval · Change orders · Deposits, progress and final invoices · Getting paid and receipts
Need a document right now? Make a free estimate or a free invoice with no sign-up, then bring the job into InvoiceWren when you are ready.
Rules to check, by state and city
Pressure washing is mostly governed locally, through stormwater rules, contractor licensing and sales tax. These are examples from official pages we read on Nov 13 2026. They are not every rule. Check yours.
- Federal: the Clean Water Act prohibits discharging pollutants through a point source into waters of the United States without a permit [5]. Stormwater in municipal storm drains is often discharged untreated into local water bodies [4]. The pressure washing rule is set by your city or county.
- Example: the city of Roseville, California, lists wash water from power washing parking lots as not allowed to enter the storm drain [6]. One city is not a rule for the country.
- Federal: employers with hazardous chemicals must have labels and safety data sheets for their exposed workers, and train them [8].
- California: a contractor license is needed when a project needs a building permit, or when the total cost of labor and materials of one or more contracts on the project is $1,000 or more. A person below the limit must not advertise as a licensed contractor [11]. We did not find a page that says whether pressure washing counts as contracting there, so ask the board.
- Florida: the statute exempts work of a casual, minor or inconsequential nature when the total price is under $2,500. It does not cover work that is part of a larger job, or anyone who advertises as a contractor [12]. We did not find an official page on whether pressure washing is a licensed trade in Florida.
- New York: a written contract is required for home improvement work that costs more than $500, with a description of the work and the materials. The customer has an unconditional right to cancel until midnight of the third business day [1]. We did not confirm whether pressure washing counts as home improvement.
- New York: sales tax applies to maintaining, servicing and repairing real property, and the end result decides it [9]. Texas: keeping the inside and outside premises of a building clean is a real property service for sales tax [10].
This is general information, not legal or tax advice.
Checklist
Questions
How should I price a pressure washing job?
By surface. Write the area, the method and the price for each surface, and what is not included. The customer can compare your quote with another one, line by line.
What if the customer asks for another surface on the day?
Write it as its own line with its price, and get a yes before you start. In InvoiceWren you send a change order, and the customer approves it on their phone.
How do I protect myself from a damage claim?
Write the method on the estimate, and write down damage that was there before you started, with photos. An insurer's consumer guide lists wood, windows and siding as things that can be damaged by too much pressure [3].
Can I let wash water run into the street?
Often not. Storm drains usually carry water to local waters untreated [4], and cities set their own rules: one California city, for example, does not allow wash water from power washing parking lots to enter the storm drain [6]. Ask your city or county.
Do I need a contractor license?
It depends on the state and the size of the job. California requires a license when a project is valued at $1,000 or more in labor and materials, or needs a permit [11]. Florida exempts small, minor work under $2,500 [12]. We did not find an official page that says whether pressure washing itself is covered, so ask your state board.
Do I charge sales tax on pressure washing?
It depends on the state. New York taxes maintenance of real property, and the end result decides it [9]. Texas treats keeping the outside of a building clean as a real property service [10]. Ask your tax office about your job.
Do I need a written contract?
In New York, yes, for home improvement work that costs more than $500 [1]. Elsewhere it is the safest way. A signed estimate in InvoiceWren is your written record of what was agreed.
Should I ask for a deposit?
Many companies do for larger jobs. The New York Attorney General says never to pay the full price up front [2]. Check your state's home improvement law before you set one.
Send your next estimate from the job.
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Sources
- New York State Attorney General: Home Improvement Fact Sheet. Checked .
- New York State Attorney General: Hiring a home-improvement contractor. Checked .
- State Farm (an insurer's consumer page, not a regulator): Pressure washing 101. Checked .
- U.S. EPA: Stormwater Discharges from Municipal Sources. Checked .
- U.S. EPA: NPDES Permit Basics. Checked .
- City of Roseville, California: Best Practices for Business (stormwater). Checked .
- CDC: Pressure Washer Safety. Checked .
- OSHA: Hazard Communication. Checked .
- Official Compilation of Codes, Rules and Regulations of the State of New York, 20 NYCRR 527.7 (via Cornell Legal Information Institute). Checked .
- Texas Administrative Code, 34 TAC 3.356 (via Cornell Legal Information Institute). Checked .
- California Contractors State License Board: Before Applying for a License When No Exam is Required. Checked .
- Florida Statutes 2026, Chapter 489 (section 489.103, Exemptions). Checked .
Prices and features change. We check these pages before each update. If something here is out of date, tell us at hello@invoicewren.com and we will fix it.