The customer stops you in the driveway. "While you're here, could you move that outlet over a bit? And maybe add one more by the window?" You say sure. It takes you an hour. It feels like nothing.

Three weeks later you send the invoice for the original quote. The extra hour, and the parts you grabbed on the way, are not on it. You did the work. Nobody paid for it.

That is a change order that never got written down. It is one of the most common ways small trade crews give away money, and almost nobody notices because each one looks small on its own.

How Extras Slip Through

Extras rarely show up in a neat meeting. They show up in the middle of a busy day, in a few ordinary ways.

None of these are careless people. They are busy people doing good work for someone they want to keep happy. The trouble is that being helpful and being paid are two different things, and only one of them shows up on the invoice.

Why It Costs More Than the Hour

When an extra goes unbilled, you lose the time and the material. But you also set a pattern. The customer learns that asking is free. The next extra gets bigger, because nothing ever came back with a bill. And by the time you try to charge for one, it feels like you are changing the rules.

Your books take a hit too. If your spouse or bookkeeper is working from the quote and the invoice, the math looks fine. They cannot see the parts you bought for something that was never billed. The job just looks like it made less money than it should have, and nobody knows why.

A Simple Habit: Say It, Send It, Stamp It

You do not need software or a long form. You need one habit that takes about a minute.

Say it. When the customer asks for something extra, say out loud: "Sure, I can do that. It'll be added to the invoice as an extra."

Send it. Before you leave the site, text or email two lines: "Confirming the extra we talked about today: [what it is]. I'll add it to the invoice as a change to the job. Let me know if that's not right."

Stamp it. Put the extra where you will see it at invoice time. A note on the job, a line in your phone, or a photo of the work with a short caption. The point is that it lands somewhere other than your memory.

That is the whole system. The text you send also protects you. If the customer says "I never asked for that," you have their reply or their silence, plus the date.

What to Put in the Message

Keep it short and plain. A good confirmation has four parts:

If the extra is bigger than a quick favour, agree on the amount before you start, not after. A fast "this will add about this much, okay?" on site saves a long uncomfortable talk later. Whether you call it a change order, an extra, or an add-on does not matter. What matters is that it is written.

The Friday Sweep

Habits slip on busy weeks, so add a backup. Once a week, ten minutes, scroll back through your texts and job notes. Look for phrases like "can you also," "while you're there," "go ahead," or any photo the customer sent you. Match each one to an invoice. If an extra never made it onto one, add it now, while the job is still fresh in everyone's mind.

Also ask your crew to send you a quick message whenever they agree to something on site. One line is enough. You cannot bill what you never hear about.

Keep the Relationship Easy

Some owners worry that billing for extras makes them look cheap. It usually does the opposite. Customers who work with tradespeople expect extras to cost something, and a clear note up front feels more professional than a surprise line at the end. Being casual about the talk and careful about the paper is the best mix.

Truck Cab Ops helps small trade crews catch finished work that never got billed, including extras buried in texts, so the invoice matches what you actually did.

If you want to see what turns up in your own paperwork, the first look is free.

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