Quotes vs Estimates: The Legal Difference & Your Rights When Costs Vary

Quick Answer: A quote is a fixed price offer — if the customer accepts it, the tradesperson is legally bound to complete the work for that price (barring agreed variations). An estimate is an approximate figure and can change, but must be "reasonable" under the Consumer Rights Act 2015. In practice, UK courts and Trading Standards treat a clearly worded document headed "Quotation" as binding. The key protection for tradespeople is to scope clearly, include variation clauses, and get any changes signed off in writing before doing additional work.

Summary

The distinction between a quote and an estimate sounds simple but is one of the most common sources of disputes between tradespeople and customers. A tradesperson who gives a "quote" then charges more will face a very difficult dispute — the customer is entitled to the quoted price unless the scope clearly changed. A tradesperson who gives only a rough estimate may find they are still held to something close to that figure if the customer can show they relied on it.

Understanding the legal position, using the right language in your documents, and managing variations properly will prevent most payment disputes and protect you legally when disputes do arise.

Key Facts

• Quote (Quotation) — a fixed-price offer; if accepted, creates a binding contract at that price; the tradesperson bears the cost of any overrun within the agreed scope
• Estimate — an approximation; not binding; but must be a genuine assessment, not a deliberate underestimate to win work; must be "reasonable" under Section 51 Consumer Rights Act 2015
• Consumer Rights Act 2015 (CRA) — applies to B2C (business to consumer) contracts; requires services to be carried out for a "reasonable charge" if no price is agreed; applies to estimates
• Supply of Goods and Services Act 1982 — older legislation (B2B contracts); same principle: if no price fixed, a reasonable price must be paid
• "Reasonable price" — if no price is agreed or estimated, the customer pays what's reasonable for that type of work; this is decided by reference to market rates
• Variation (additional work) — work outside the original scope is not included in the original quote; must be agreed in writing before proceeding; verbal agreement to additional work is difficult to enforce
• Scope of works — the precise definition of what the quote covers; ambiguity in scope description is the primary source of dispute; itemised quotes with clear inclusions and exclusions are less likely to be disputed
• Written contract — a written contract (or at least a written scope with a signed quote) is much easier to enforce than a verbal agreement; for larger jobs (>£500), a written contract is strongly recommended
• Cooling-off period — under the Consumer Contracts Regulations 2013, consumers have 14 days to cancel a contract signed away from business premises (e.g., at the customer's home); this applies if you give a written quote and the customer signs it in their home; some tradespeople misunderstand this as applying once work has started — it doesn't if the consumer agreed to work starting before the 14 days are up
• Cancellation after work starts — if work starts (with the customer's consent) before the 14-day cooling-off period expires, the consumer must pay for work completed to that point; they cannot claim work done for free
• Deposit — not regulated in amount but must be "reasonable"; 25–30% is typical and courts will generally uphold this; 50%+ deposits are more difficult to defend for straightforward work
• Stage payments — most appropriate for larger jobs; tie payments to completion of defined stages; reduces both parties' risk

Quick Reference Table

Detailed Guidance

What Makes a Document a "Quote" vs an "Estimate"

Courts look at the intention of the parties and the language used. A document that:

• Uses the word "Quotation" or "Quote"
• Gives a single fixed total figure
• Says "this price is valid for 30 days" (implying it can be relied upon)

...will almost certainly be treated as binding.

A document that:

• Uses the words "Estimate", "Approximate cost", or "Indicative budget"
• Explains that costs may vary (e.g., "materials subject to price changes", "contingency for unforeseen works")
• Is clearly stated as a budgetary guide pending a fuller survey

...is more likely to be treated as an estimate.

Danger zone: A document headed "Quotation" that says "costs may vary" is ambiguous. Courts have found such documents binding despite the caveat, because the overall intent was to fix a price. If you genuinely cannot give a fixed price (e.g., opening up a wall without knowing what's behind it), use "Estimate" language and explain why in the document.

Structuring a Quote to Protect Yourself

1. Detailed scope of works: List every item of work included. Then list what is explicitly excluded. Example:

Includes: strip existing tiles and dispose; supply and install 10m² floor tiles at £35/m² allowance; reseal and grout; make good to existing skirting. Excludes: repairs to existing substrate (waterproof membrane or adhesion issues found on opening up the floor); alterations to pipework; replacement of existing shower tray.

Explicit exclusions are your protection when the customer expects more than was agreed.

2. Allowances: Where a final selection hasn't been made, use a stated allowance: "tile allowance of £35/m² ex-VAT — upgrades at additional cost". This is binding at the allowance figure but not at a different product.

3. Variation clause: Include a paragraph stating that works beyond the agreed scope will be notified to the customer and agreed in writing before proceeding, and will be charged as additional to the quoted price.

4. Payment terms: State clearly: deposit amount and timing; stage payment trigger events; final payment date (typically "on practical completion"). Include a clause that ownership of materials does not transfer until payment received.

Using squote: squote generates a professional, itemised PDF quote from a 2-minute voice recording — including payment terms and a scope of works — so the legal foundations are in place before the customer has a chance to forget the conversation.

5. Price validity: "This quote is valid for 30 days from the date above." After 30 days, material costs may have changed and you're entitled to re-quote.

Managing Variations

Variations (changes to the agreed scope, including unforeseen circumstances) are the primary cause of payment disputes. Managing them correctly:

Before starting additional work:

1. Stop and notify the customer in writing (even a text message with full detail is acceptable)
2. Explain what has been found and what additional work is needed
3. Confirm the additional cost and get approval before proceeding
4. If the customer agrees verbally, follow up immediately in writing: "Confirming our conversation today — we found X and agreed to carry out Y at a cost of £Z. Please reply to confirm."

Photographing the issue: Always photograph any unforeseen condition before making good. A photograph taken before covering up the problem is far more valuable than a witness account in a dispute.

"You should have included that in the quote": The customer's most common argument. Your defence is: the original scope was clearly defined and this situation was explicitly excluded or could not have been reasonably foreseen. Good scope descriptions and explicit exclusions are essential.

Consumer Rights and Cooling Off

The Consumer Contracts Regulations 2013 give consumers 14 days to cancel a contract entered into away from business premises (i.e., at the customer's home). This applies to your quote being accepted at the customer's house.

Key points:

• If work has not started, the consumer can cancel without penalty within 14 days
• If work starts (with the consumer's consent before the 14-day period ends), the consumer must pay for work done to the cancellation point at a daily pro-rata rate
• You must tell the consumer about this right in writing before the contract is concluded; the standard wording is provided by Trading Standards / Citizens Advice
• For jobs starting immediately (emergency repairs), get written confirmation from the customer that they agree to work starting before the cooling-off period expires and they understand they waive the full 14-day right

Frequently Asked Questions

A customer accepted my quote verbally but now says they never agreed. What can I do?

A verbal contract is binding but very difficult to enforce. If you have any evidence — text messages, emails, witnesses — these can support your claim in small claims court. Going forward: always confirm acceptance of a quote in writing. An email saying "Following our conversation today, I can confirm you have accepted the quote for [work] at [£price]" is sufficient, even if not signed.

I found more work behind a wall than expected. Am I entitled to charge more?

Yes, if: (a) the additional work was genuinely unforeseeable from what could be inspected before starting; and (b) you told the customer before carrying out the additional work and got their approval. If you just carried on without telling the customer, you may have difficulty recovering the extra cost unless you can show it was genuinely necessary and you had no choice but to proceed to prevent damage.

I gave an estimate of £2,000 and the final bill was £4,500. Can the customer refuse to pay?

The customer may have grounds to challenge the £4,500 if the estimate was £2,000, depending on whether the increase was genuinely unforeseen and reasonable, and whether they were told of the increased cost before it was incurred. Courts have found that large unexplained deviations from estimates are not "reasonable" under the Consumer Rights Act. Best practice is to have notified the customer in writing at each stage where costs deviated significantly from the estimate.

Regulations & Standards

• Consumer Rights Act 2015 — services provisions; charges to be reasonable if no price agreed

• Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 — 14-day cooling-off for off-premises contracts

• Supply of Goods and Services Act 1982 — implied terms in B2B contracts

• Unfair Terms in Consumer Contracts Regulations 1999 — contract terms must not be unfair to consumers

• Citizens Advice: Your Rights When You Hire a Tradesperson — Consumer rights overview

• Which?: Quotes, Estimates and Contracts — Plain English explanation

• ACAS: Employment Contracts and Disputes — For B2B disputes; ACAS can mediate

• written quote template — Quote template with correct legal wording

• scope creep — Managing additional work requests

• contract termination — Ending a job contract

• consumer rights — Consumer rights overview for tradespeople