How To Handle Electrical Variations Without Losing Money

“While you’re here, can you just add a couple of points in the garage?” Sure you can. And if that extra work never gets priced, agreed or invoiced, you just did it for nothing.

Variations are where electrical margin quietly bleeds out. Not on the original quote, on everything that gets added after it. Here’s how to handle them so you actually get paid.

Why variations cost you the most

The original quote gets your full attention. You price it, you check it, you send it. Variations get none of that. They happen mid-job, in conversation, with your hands full, and they slip straight past the invoice.

A few “quick extras” across a job, none of them logged, and a profitable quote finishes square. The work got done. The money didn’t.

The one rule: in writing, before you start

Across Australia the principle is the same in every state. A variation should be in writing and agreed before the variation work begins. Not a verbal nod. Not “I’ll sort it on the invoice”. Agreed, in writing, first.

This isn’t just good practice, it’s how the building rules work. In Queensland the QBCC requires variations to be put in writing and agreed by the owner before work starts, including the description, the cost change and any time impact. In NSW the Home Building Act expects the same, agreed in writing, signed by both parties, before the change work begins.

The detail differs by state, so check your own state’s regulator. But the principle never changes: paper first, work second.

You can’t bill for it before it starts

Worth knowing: under the QBCC rules you can’t demand payment for a variation before the variation work actually starts. So the move isn’t “charge upfront”, it’s “agree the price and scope upfront, then do the work, then bill it”. Get the agreement locked, not the money.

Issue a revised quote, don’t scribble on the old one

The clean way to handle a variation is to price it as its own thing, the extra materials, the extra hours, the margin, and issue it as a revised or additional quote. Don’t edit the original quote in place. You want a clear paper trail showing what was agreed, when, and for how much.

That way if there’s a question later, the answer is in writing and dated.

Build the habit, not the heroics

The electricians who don’t lose money on variations aren’t more disciplined people. They’ve just got a system that catches every one.

• Log the variation the moment it’s mentioned, on the phone, on site, doesn’t matter
• Price it properly, same maths as the original, materials plus labour plus margin
• Get it agreed in writing before you do the work
• Bill it on completion

A quoting system built for electricians handles this as first-class workflow, the variation attaches to the original quote, gets priced, gets approved, gets billed, so it can’t quietly vanish. It’s the same discipline that lets a quoting system scale without leaking.

The mindset shift

A variation isn’t a favour. It’s extra work, with extra cost, that deserves to be priced like any other work. Treating “while you’re here” as free is one of the most common ways electricians lose money.

Every variation is a small quote. Treat it like one and you get paid. Treat it like a favour and you don’t.