Most of your customers are sound. They tell you what they need, you do the work, they pay, everyone's happy. But every now and then you get one who makes you question why you ever went self-employed in the first place.
The tricky part is that difficult customers come in different flavours, and the approach that works for one type will backfire spectacularly on another. Here's how to handle each of them without losing your mind — or your money.
The Price Haggler
You send a quote. They come back with "Can you do it for less?" before they've even finished reading it. Or the classic: "The other guy quoted £200 less." Maybe he did. Maybe he didn't. Either way, you're not running a market stall.
The fix is simple: don't negotiate against yourself. If your price is fair, say so calmly. "That's my best price for the work involved. I'm happy to talk through the breakdown if you'd like to understand what's included." If they push again, let them walk. The customer who beats you down on price will also be the one who complains about everything and leaves a mediocre review.
One thing that helps massively here is a detailed, itemised quote. When the customer can see exactly what they're paying for — labour, materials, travel, disposal — there's less room for "can you do it cheaper?" because they can see where the money goes. It's much harder to argue with a line-by-line breakdown than a single lump sum.
The Scope Creeper
"While you're here, could you just..." Five of the most expensive words in the English language. You're there to fit a new basin and suddenly you're re-tiling the splashback, fixing a wobbly towel rail, and looking at a dripping tap in the kitchen — all for the original price.
The key is catching it early. The moment someone asks for extra work, stop and say: "Yeah, I can do that — it'll be an extra £X on top of the quote. Want me to add it on?" Friendly, straightforward, no awkwardness. If they say no, crack on with the original job.
The mistake most tradesmen make is doing the extras without saying anything, then either eating the cost or adding it to the invoice as a surprise. The first loses you money, the second loses you the customer.
Put It in Writing
A written quote isn't just professional — it's your defence against scope creep. When the customer says "but I thought that was included," you can point to the quote and say "here's exactly what's covered." Tools like Gaffer make it easy to send clear, written quotes over WhatsApp so there's a trail both sides can refer back to.
The Non-Payer
The job's done, the invoice is sent, and then... nothing. A week goes by. Two weeks. You send a reminder. "Oh yeah, I'll sort it this week." Another week. This is the one that keeps tradespeople up at night, because you've already done the work and spent the money on materials.
Prevention is better than cure. For bigger jobs, take a deposit upfront — 30-50% is standard and any reasonable customer will expect it. Stage payments on larger projects: a third upfront, a third at midpoint, a third on completion. This limits your exposure if someone turns out to be a non-payer.
For the ones that slip through, follow a system. Invoice on completion (not three days later — the same day). Follow up at 7 days with a polite reminder. Follow up at 14 days with a firmer reminder that mentions late payment charges. At 30 days, send a final notice stating that you'll begin debt recovery proceedings if payment isn't received within 7 days.
Most non-payers aren't malicious — they're just disorganised or cash-flow tight. The structured approach gives them nudges without burning the relationship. For the genuinely dodgy ones, the mention of debt recovery usually shakes the money loose.
The Micromanager
They watch your every move. They question every decision. "Why are you using that fitting?" "Shouldn't the pipe go the other way?" "My brother-in-law said you should use copper, not plastic." They mean well — usually — but it's exhausting and it slows you down.
The best approach is to set expectations at the start. Before you pick up a tool, walk them through what you're going to do and why. "I'm going to run the waste this way because it gives better fall. I'm using push-fit here because it's accessible for future maintenance. I'll tidy up and test everything before I leave." When they understand the plan upfront, they're less likely to hover and question every step.
If they're still breathing down your neck, try humour. "You're welcome to watch, but I should warn you, I charge extra for an audience." Said with a smile, it usually gets the message across.
"My Mate Could Do It Cheaper"
Ah, the classic. Everyone's got a mate who's "handy" and could do it for half the price. The temptation is to get defensive or start justifying your rates. Don't bother.
The best response is something like: "If your mate can do it, that's great — go for it. But if you want it done properly with a guarantee and insurance behind it, that's what my price covers." Said without sarcasm or bitterness, just as a statement of fact.
Nine times out of ten, the "mate" either doesn't exist, isn't actually available, or did a bodge job for someone else that the customer has quietly heard about. They're testing you. If you hold your ground politely, most of them will book you anyway.
When to Walk Away
Not every customer is worth having. If someone is rude to you during the quoting stage, they'll be worse during the job. If they're already trying to negotiate before you've started, they'll dispute the invoice when you're finished. If your gut says something's off, trust it.
Walking away doesn't mean being rude. A simple "I don't think I'm the right fit for this job, but I wish you the best with it" is professional and final. You don't owe anyone an explanation. Your time is limited, and every hour spent dealing with a nightmare customer is an hour you're not spending on a good one.
Red Flags to Watch For
After a few years in the trade, you develop a sixth sense for problem customers. But for newer tradespeople, here are the warning signs:
They badmouth their previous tradesperson extensively. They'll do the same to you. They want the job done "yesterday" but won't commit to a date. They ask for a discount before you've even quoted. They won't put anything in writing or commit to a scope of work. They have unrealistic expectations about timelines or budgets and won't listen when you explain reality.
Any one of these on its own isn't necessarily a deal-breaker. But two or three together? That's your cue to politely decline.
Stay Professional, Always
This is the hardest part, because some customers will genuinely test your patience. But losing your temper — even when you're completely in the right — only ever makes things worse. You lose the moral high ground, you risk a bad review, and word gets around.
Keep records of everything. Written quotes, messages, change requests, payment reminders. If a dispute ever escalates, you want a paper trail that shows you were reasonable and professional throughout. Some tradespeople use Gaffer to keep all customer communications in one place, which makes it straightforward to pull up the history if there's ever a disagreement about what was agreed.
At the end of the day, difficult customers are the minority. For every one who makes your life hard, there are ten who appreciate your work, pay on time, and recommend you to their neighbours. Focus your energy on those people, and don't let the odd nightmare put you off doing what you're good at.