Customer deposits and UK consumer law: what’s legal, what’s fair

Every builder who’s ever been stung for £3,000 of materials after a customer ghosted mid-job wishes they’d taken a deposit. Every customer who’s ever paid £2,000 up front to a builder who vanished wishes they hadn’t. The law sits in the middle, protecting both of you — if you set the deposit up correctly.

Is it legal to ask for a deposit?

Yes. There’s no legal maximum for a deposit on a home-improvement job in the UK. In practice:

• 10–15% on a simple job
• 20% on a medium job where you’re sourcing materials
• 25–30% upfront on a major job like a kitchen or extension, to cover material purchases

Anything over 30% before starting starts to look predatory and makes customers nervous.

The Consumer Rights Act 2015

Three protections that apply to every tradesperson-to-consumer contract:

1. Services must be performed with reasonable care and skill. If they’re not, the customer can demand you re-do the work or refund the price difference.
2. Goods supplied must be of satisfactory quality. If a boiler fails within months, the customer has a claim against you (you can then claim against the supplier).
3. Services must be performed within a reasonable time and at a reasonable price, unless specifically agreed otherwise.

A deposit clause can’t override these — any term saying "no refunds under any circumstances" is legally unenforceable.

What a fair deposit clause looks like

On your quote or invoice:

"A 20% deposit (£X) is payable on acceptance of this quote. This secures the job in the schedule and covers initial materials procurement. If the customer cancels before work begins, the deposit is refundable minus any materials already ordered and any documented preparation time (itemised on request)."

That clause is enforceable. It’s fair. It covers you if they cancel and it protects them from losing the full deposit for no work done.

The cooling-off period (at home vs in your premises)

If you agree the contract at the customer’s home (typical for tradespeople), the Consumer Contracts Regulations 2013 give them a 14-day cooling-off period to cancel with no penalty. Unless they’ve signed a waiver and you’ve started work with their express consent.

This matters. If you:

• Visit the house to quote
• Get a verbal yes
• Start work the next day without a signed waiver

…and they then cancel on day 7, they can demand their deposit back AND not pay for the work you’ve already done.

Fix: get them to sign a simple waiver: "I expressly request that work begin within the 14-day cooling-off period and acknowledge I may be liable for services supplied." One sentence. Keep it.

Milestone payments (stage invoices)

Better than a big deposit for large jobs: stage invoices. Legal, standard, protects cash flow without a huge up-front payment.

Typical structure on a £20,000 job:

• 20% deposit on start: £4,000
• 30% at first milestone (strip-out or first fix): £6,000
• 30% at second milestone (second fix or main fit): £6,000
• 20% on completion: £4,000

Each stage invoice is its own payment demand. If the customer doesn’t pay stage 2, you stop work. Legally defensible.

What happens if they refuse to pay

Sequence from our chasing late invoices guide:

1. Day 0: friendly reminder
2. Day 7: statutory interest warning (Bank of England base + 8%)
3. Day 14: Letter Before Action
4. Day 28: Money Claim Online (£35–£70 fee, added to the debt)

Small claims under £10,000 are straightforward. Keep every invoice, every message, every CIS25, every photo.

A one-line rule that saves most disputes

Put everything in writing. A quote with payment stages signed by the customer before work starts removes 90% of future disputes.

Holdfort sends every quote and invoice as a branded PDF customers can sign by reply. See how →

Deposit protection options for large jobs

On jobs over £5,000, consumers are increasingly nervous about handing over cash up-front. Several tools reduce their risk (and therefore increase your acceptance rate):

• Stripe or GoCardless escrow-style payment. The money sits in a held state until work begins. Customer is protected against a complete no-show, you’re protected against a cancelled card. Typical fee: 1.4-2.9% + 20p per transaction.
• Client’s solicitor holds the deposit. Old-school but works. For jobs over £20,000, many customers’ solicitors will hold the deposit in a client account and release on a milestone. Your quote references this.
• FMB (Federation of Master Builders) deposit protection. If you’re an FMB member, their scheme insures customer deposits up to £30,000 against your insolvency. A selling point for bigger jobs.
• Credit card payment. For deposits under £30,000 paid by credit card, the customer has Section 75 protection from the Consumer Credit Act. This costs you the credit-card fee (1.5-2% typically) but removes customer anxiety entirely.

Specific case examples

Case 1: withheld deposit after customer cancels

A builder took a £1,500 deposit to secure a June start date on a £15,000 loft conversion. In May, the customer cancelled, citing "no longer able to afford it." Builder retained £300 for materials already ordered (non-returnable) + £200 for preparatory time. Refunded £1,000.

Customer challenged, claimed full refund under cooling-off rights. Builder produced the quote explicitly stating "cancellation after signature: materials costs non-refundable". Case didn’t escalate to court; customer accepted the £1,000 refund and moved on.

Case 2: customer disputes progress payments

Kitchen fit halfway through, customer disputes the stage 2 invoice, refuses to pay. Builder stops work. Customer threatens court, claiming builder breached contract.

Builder’s position: stage 2 was tied to "first fix complete and signed off" in the quote. First fix was complete; customer had delayed signing the sign-off sheet. Builder documents show the work done, signed-off sheet sent. Customer backs down, pays stage 2 less 5% retention. Common outcome.

Case 3: deposit refund after consumer cooling-off

Homeowner signed a kitchen install contract at home, paid £1,000 deposit. 10 days later (within 14-day cooling-off period), they cancel — found a cheaper installer. Builder had already ordered units.

Builder claimed the deposit covered ordered units. Customer disputed under Consumer Contracts Regulations. Issue: did the builder get the customer to expressly waive cooling-off rights and start work immediately? No written waiver. Builder had to refund the full £1,000 and eat the cost of the ordered units.

Lesson: always get the waiver signed in writing if you’re going to start work within 14 days of an at-home contract.

Staying out of disputes entirely — the 4 habits

1. Written quote before any money changes hands. Customer signs it (physically or electronically). Includes scope, price, stages, timeline, guarantee, cooling-off waiver if applicable.
2. Every variation documented and signed. "Can you also..." gets a written variation order before the extra work happens, not after.
3. Photo evidence of milestones. Complete stage 1, photograph the state of the job, attach to the stage 1 invoice. If it later comes to dispute, you have visual proof of work done.
4. Keep communication in writing. WhatsApp is fine; phone calls aren’t (unless you follow up with "just confirming what we discussed" message). Written chain = paper trail.