When does a quote become legally binding?

The moment the customer accepts it. Acceptance can be by signature, email reply, text message, phone call, or by letting you start work. Once accepted, the quote is a binding contract at that price — unless a variation clause covers additional work and the customer has agreed to it in writing.

What's the difference between a quote and an estimate?

A quote is a fixed offer — once accepted it's binding at that price. An estimate is indicative — under section 51 of the Consumer Rights Act 2015 the final price can rise to a 'reasonable' figure (typically original estimate plus 10-15%) provided the tradesperson gave timely written notice when costs increased.

How long should my quote be valid?

Thirty days is the industry standard. State this on the quote explicitly. After the validity period expires, pricing can be revised to reflect current material costs without breaching any contract — copper, boilers, timber and cables all move in price frequently.

Can I charge a deposit on my quote?

Yes — standard practice is 20-25% on materials-heavy jobs. The deposit must cover actual costs incurred (ordered materials, mobilisation). Blanket non-refundable clauses are unenforceable as penalty clauses under Consumer Rights Act 2015 Schedule 2, but recoverable costs are always chargeable with supplier evidence.

What interest can I charge on late payments?

For B2B contracts (letting agents, landlords' businesses, other contractors), you have a statutory right to 8% above Bank of England base rate plus fixed compensation (£40-£100 depending on debt size) under the Late Payment of Commercial Debts (Interest) Act 1998. For consumer contracts, interest can only be charged if it's a fair term agreed in the contract.

Do I have to give customers a 14-day cancellation right?

Yes for contracts agreed in the customer's home (the 2013 Consumer Contracts Regulations). You must provide a written cancellation notice. If the customer asks you to start inside the 14-day window, they must sign an express request acknowledging they'll pay for work done to the cancellation date. Without the notice, the cancellation window extends to 12 months.

How long do I need to keep quotes and invoices?

At least 6 years to cover the limitation period for contract claims under section 5 of the Limitation Act 1980 in England and Wales (5 years in Scotland). For deeds the period is 12 years. For VAT records, HMRC requires 6 years. Digital storage with backup is the only practical way to meet all three.

How to Write a Tradesman Quote That Wins Jobs (UK 2026)

Why presentation wins jobs

Homeowners choosing between tradespeople don't always pick the cheapest — they pick the one they trust. And paperwork is the first tangible signal of trustworthiness. A handwritten quote, or a price sent by text three days after the survey, signals a one-man operation that doesn't take admin seriously.

A branded PDF with your logo, clear pricing breakdown, and professional payment terms signals a business that takes quality seriously. The reasoning is simple: if they can't be bothered to send a proper quote, what does their finished work look like?

Five things every winning quote has

These five elements distinguish quotes that win from quotes that don't:

•Specific scope — Not 'boiler service' but 'annual service on Worcester Bosch 25i, including flue gas analysis, heat exchanger inspection, filter clean, and safety check'. Specificity signals competence.
•Itemised pricing — Even on a fixed-price job, break it down: materials vs. labour. Customers feel more confident when they understand what they're paying for.
•Clear payment terms — How much deposit, when balance is due, what happens if payment is late. One paragraph. Customers who see clear terms are less likely to delay payment.
•Validity date — 'This quote is valid for 30 days.' Signals you're busy, material prices change, and you're not holding prices indefinitely.
•Your credentials — Gas Safe number, NICEIC/NAPIT registration, CSCS card. Put them on the quote. It differentiates you from unregistered tradespeople and builds trust instantly.

The four mistakes that lose jobs

These are the most common quote errors sole traders make:

•Sending it too slowly: if you wait 3–5 days to follow up after a survey, the customer has likely already booked someone else. Same-day or next-morning is the competitive standard.
•Being vague to avoid commitment: 'approximately £600–1,000' is not a quote. Customers hate uncertainty. Give a fixed price, or give a detailed estimate with a clear variation clause.
•No company header: if your quote starts with just numbers and no business name or logo, it looks unprofessional regardless of how reasonable the price is.
•No terms and conditions: no payment terms means no protection. A single paragraph covering payment date, late payment interest, and variations is all you need.

What customers actually decide on

Research consistently shows that homeowners prioritise reliability and trustworthiness over price when choosing tradespeople. The quote is often their first real impression of how you operate. A well-presented, clearly explained quote answers their biggest anxiety: 'Will this person turn up, do the job properly, and not charge me more than agreed?'

The quote that answers all three questions — before the work even starts — wins the job.

Consumer Rights Act 2015 — the reasonable price test

The Consumer Rights Act 2015 governs every service you sell to a homeowner. Two sections matter most on quotes: section 49 (services performed with reasonable care and skill — cannot be excluded), and section 51 (reasonable price for services where a price has not been fixed).

Section 51 is the section that decides disputes when your document is an estimate, not a quote. The court looks at what similar work costs in the local market, what you told the customer during the job about costs changing, and whether you kept receipts and time records. The figure most judges accept is the original estimate plus 10-15%. Above that, you need evidence.

Late Payment Act 1998 — statutory interest

The Late Payment of Commercial Debts (Interest) Act 1998 applies to B2B contracts — letting agents, landlords' businesses, other contractors. You have a statutory right to charge interest at 8% above the Bank of England base rate on late payments, plus a fixed sum of compensation (£40, £70, or £100 depending on debt size).

This right cannot be contracted out of. A clause in a main contractor's terms saying 'no interest on late payment' is void against you as a commercial supplier. Include the clause on every B2B invoice: 'This invoice is payable within 30 days. Late payment will accrue statutory interest at 8% above the Bank of England base rate under the Late Payment of Commercial Debts (Interest) Act 1998, plus the statutory fixed compensation.'

Consumer Contracts Regulations 2013 — the information you must give

The Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 apply to contracts agreed off-premises — which includes almost all trade work in a customer's home. They require specific pre-contractual information in a 'durable form' (a PDF quote counts).

•Your full trading name, address, and contact details
•A description of the services in enough detail that the customer knows what they're getting
•The total price, or if not calculable in advance, how it will be calculated
•Arrangements for payment and performance
•Information about the 14-day right to cancel, including a cancellation form
•The duration of the contract, and arrangements for termination

When a quote becomes binding — offer and acceptance

A quote is an 'offer' in contract law. It becomes binding the moment the customer 'accepts' it. Acceptance doesn't need a signature — it can be a reply email, a WhatsApp 'yes please', a phone call saying 'go ahead', or simply letting you start work. Once acceptance happens, both parties are bound.

This is why the word on your document matters so much. If you write 'quote £1,500' and they let you start, you're held to £1,500. If you write 'estimate £1,500 — final price depends on scope' and they let you start, you have latitude under CRA 2015 s.51 for a reasonable variance.

If you want to revoke a quote before acceptance, tell the customer in writing before they say yes. Once they've accepted, revocation requires their agreement too.

Record-keeping and the 6-year limitation period

Under section 5 of the Limitation Act 1980, customers have 6 years to bring a contract claim in England and Wales (5 years in Scotland under the Prescription and Limitation (Scotland) Act 1973). Keep every quote, acceptance email, completion certificate and invoice for at least that long.

Digital storage with backup is the only practical way. Paper gets lost, fades, and burns. Cloud storage with timestamps and an audit trail is both cheaper and more defensible. If a customer turns up in year 5 claiming your quote promised something it didn't, the document you can produce is the one that decides the dispute.

Send it the same day

The single best thing you can do to win more jobs is follow up faster. Survey at 11am, quote sent by 3pm. The homeowner is still thinking about the job, still has your face in their mind, and hasn't yet called anyone else. Speed signals professionalism and availability — both things clients want.

TradeDoc AI generates professional, branded quotes for plumbers, electricians, gas engineers, and builders in about two minutes — with Consumer Rights Act wording, 14-day cancellation notice, and statutory interest clause built in. Try it free for 7 days, no card required.