Invoice Koi Free generator

Invoicing for pressure washing contractors

Invoice Koi is an invoice app for pressure washing contractors, so the m² and the resanding are priced on the driveway while you are both still standing on it.

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Get it on Google Play

The iPhone app is coming to the App Store.

An illustration of a lance and trigger gun, a coiled hose, a surface cleaner head, a jerry can and a pair of ear defenders, with a koi swimming among them.

The whole job is decided in the first five minutes, standing on the drive working out what it is: how many m², how bad the weeds are, whether it wants resanding after. Post it two days later and it is a price competing with two other prices.

01On the document

What pressure washing contractors
put on an invoice.

Save these items with your own rates. Tap to add them to an invoice, with the unit, price and totals filled in.

LineUnit
Driveway cleaningm²
Patio and path cleaningm²
Render and soffit cleaningm²
Resanding, kiln driedm²
Sealingm²
Day ratedays
Fuel, detergent and consumablesjob

Set your own prices. The app's starter rates are placeholders. To bill one job today with nothing installed, the free pressure washing contractor invoice template opens in your browser with these lines on it.

A job, grouped Subtotals per section
DRIVEWAY
Block paving clean, 60 m²£420
Resanding, kiln dried£180
Subtotal£600
PATIO
Patio clean, 25 m²£175
Subtotal£175
SEALING
Sealing, 60 m²£300
Subtotal£300
Total£1,075
Grouped line items work on all nine templates.
A photograph of a pressure washing contractor lifting grime off a block paved driveway, spray haze in low afternoon sun.
Price book
Driveway cleaningm²
Patio and path cleaningm²
Render and soffit cleaningm²
One tap puts the line on the invoice.
This job, grouped
DRIVEWAY£600
PATIO£175
SEALING£300
Total£1,075
No signal needed. It is written here.
02Why pressure washing contractors use it

Three things that
save the evening.

Priced on the drive, agreed on the drive

Build the estimate standing on the job with the areas as lines, show them the total, and take it away agreed. When they accept, it converts to an invoice with the lines and terms carried across.

Your rate per m², not arithmetic in your head

The price book holds each surface at its own rate and its own unit. Put in the area and the line works itself out, which is what stops a big drive being underpriced at the gate.

Cleaning, resanding and sealing as three decisions

Group them with their own subtotals and the customer can say yes to two of the three, which is a better outcome than a single number they say no to.

03 · Questions

Asked by pressure washing contractors.

Can I price a driveway by the square metre?

Yes. A price-book line carries its own unit, so cleaning bills per m², a day of render work bills per day, and both sit on the same document.

How do I quote before I have measured?

Send an estimate with the areas as you measured them on site. If the job changes, edit the lines when it becomes an invoice: nothing is locked by having been quoted.

Can I show sealing as an optional extra?

Put it under its own heading with its own subtotal so the price of it is visible on its own, and take the group off if they decide against it.

Weighing up apps? Invoice Koi vs Jobber and Invoice Koi vs Tofu set the features side by side, including where they win. Or see all 12 comparisons.

Make an invoice free
Get it on Google Play

The iPhone app is coming to the App Store.

Already have it? Open it