How to compare quotes like for like
Three quotes only help if they price the same job. Set the scope in writing, ask each business to break its price down the same way, then compare the terms behind the totals: tax, payment stages, validity and how changes are priced.
- Markets
- US · UK · UAE & GCC
- Official sources
- 11
- Reviewed
- October 2026
- Write a short scope before you ask for prices, and send the same document to every business you approach.
- In UK consumer guidance, a quote is a fixed price, while an estimate is a rough guess that can rise.
- Check how tax is shown: UAE advertised prices must include VAT, and UK quotes should state whether VAT is included.
- Compare deposits, stage payments and change terms as carefully as the totals; they decide what happens when the job shifts.
- Treat a far lower price as a reason to ask questions, not as a bargain to accept on the spot.
Fix the scope before you ask for prices
Many quote comparisons fail because each business priced a different job. Before you contact anyone, write a short scope: what needs doing, the result you expect, the materials or specification, access and timing constraints, and who handles permits, waste and cleaning up. Send the same scope to every business and ask each to quote against it. If one suggests a better approach, ask it to price your scope as well as its alternative, so the comparison stays fair.
- Tasks and deliverables, in the order you expect them
- Materials, brands or specification, or the standard the work must meet
- Known exclusions, such as decorating after the main work
- Start date, completion date and working hours
- Who obtains permits, certificates or approvals
- Waste removal and the condition the site is handed back in
United Kingdom: quotes, estimates and VAT
Citizens Advice draws a clear line: a quote is a fixed price, while an estimate is just a rough guess, so the final bill may be higher. It suggests getting written quotes from at least three different traders, and says a good quote gives a fixed total rather than a daily rate, a breakdown of the work and materials, whether VAT is included, how long the price is valid and when it can go up, for example only if you agree to extra work.
The Consumer Rights Act 2015 supports this. What a trader says or writes about the service can become a term of the contract when you rely on it, and where no price was agreed you only have to pay a reasonable one. The standard rate of VAT is 20%, so a total that leaves it out cannot be compared with one that includes it. The Competition and Markets Authority also says the DMCC Act 2024 bans drip pricing, where extra charges are added later in the buying process.
United States: written estimates and contracts
The Federal Trade Commission (FTC) tells homeowners to get multiple estimates in writing, each covering the work, the materials, the completion date and the price. It advises against automatically choosing the lowest bid and suggests asking for an explanation when estimates differ a lot. Before work begins, it recommends a written contract naming the contractor with its address, phone number and licence number, giving estimated start and completion dates, and recording any promises made in conversation about scope and costs.
Ask each business whether sales tax applies to the job and to show it on a separate line, so that the totals you compare are built the same way. In California, the Contractors State License Board (CSLB) requires home improvement contracts to include a detailed written payment schedule, which makes it easy to see what each contractor wants before and during the work. Whatever the state, do not sign a contract that still has blank spaces.
UAE: VAT-inclusive prices and Arabic invoices
VAT has applied in the UAE since 1 January 2018 at a rate of 5%. Article 38 of Federal Decree-Law No. 8 of 2017 says that for taxable supplies the advertised price shall include the tax, with exceptions left to the Executive Regulation. When you line quotes up, check that each total is stated on the same basis, and ask the business to explain any quote that adds 5% on top of a price it advertised.
Consumer law adds its own duties. Under Federal Law No. 15 of 2020 on Consumer Protection, advertised prices must not be misleading, and the provider must give a detailed invoice in Arabic with its trade name, address, the service, its price and details; consumer data, advertising and contracts must be in Arabic, with other languages allowed alongside. The Executive Regulation requires prices to be shown clearly where a service is offered, and maintenance providers must give an estimated cost on request. Ask for every quote in writing, on letterhead showing the licence number.
Line the quotes up side by side
Put the quotes into one table with the same rows for each business. Totals rarely match at first, and the gaps usually come from items one business included and another left out. Ask each business to price the missing items, then compare again. Note how long each price is valid, because a quote that expires before you decide may be repriced.
- Total price, and whether it is fixed or estimated
- Tax included or shown separately, and at what rate
- Labour, materials and any subcontracted work as separate lines
- Deposit, stage payments and final payment, with what triggers each
- Start date, duration and what happens if the business runs late
- Warranty terms on workmanship and materials
- How variations are priced: a rate list, a day rate or a new quote
Payment schedules and variations
Two quotes with the same total can carry very different risk. One may ask for half up front; another may want a small deposit and payments tied to finished stages. Prefer schedules in which each payment follows work you can inspect, and check the deposit against any local limit or official guidance in your market. Ask each business how it prices changes: a fixed rate list, an hourly or day rate, or a fresh quote for every variation.
Variations are where comparable quotes drift apart. Agree in the contract that no extra work will be charged unless it is priced and accepted in writing before it starts. Citizens Advice notes that a trader cannot charge more than the quote unless you ask for extra work that was not included, or the trader warns you that extra work is needed and you agree to pay more.
When one quote is far lower than the rest
A price well below the others is a prompt for questions, not proof of good value. Citizens Advice warns that a much lower price may mean the trader is not quoting for exactly the same work, and the FTC advises asking for an explanation when estimates differ widely. Ask what is excluded, which materials are assumed, whether tax is included and whether the business's licence and insurance cover the job. Then decide on the complete picture, not the headline figure.
Questions
What is the difference between a quote and an estimate?
In UK consumer guidance, a quote is a fixed price for the work described, and the trader cannot charge more unless you ask for extra work or agree to pay more after being warned. An estimate is only the trader's rough guess. The final bill can be higher, but you can dispute it if it is unreasonably high for the work done.
How many quotes should I get?
Citizens Advice suggests written quotes from at least three different traders before you choose, and the FTC also advises getting multiple estimates. Comparing several quotes against the same written scope helps you judge whether a price is fair and makes it easier to spot work that one business has left out.
Should a UAE quote include VAT?
Article 38 of Federal Decree-Law No. 8 of 2017 says advertised prices for taxable supplies must include VAT, with exceptions set by regulation. If a quote adds 5% VAT on top, ask the business for its Tax Registration Number and for the VAT-inclusive total, so that you compare every quote on the same basis.
Can a business charge more than its quote?
Under UK consumer guidance, only for a good reason, such as extra work you asked for, or extra work the trader warned you about and you agreed to pay for. In any market, protect yourself by agreeing in the contract that every variation must be priced and accepted in writing before the work starts.
What should a written quote include?
At minimum: the business's legal name, address and licence or registration number; a description of the work matching your scope; a breakdown of labour and materials; the total with tax shown; how long the price is valid; the payment schedule; start and finish dates; and how changes to the work will be priced and agreed.
Sources
Official sources behind this guide, checked in October 2026.
- Before you get work done on your homeCitizens AdviceUK
- Problem with building work, decorating or home improvementsCitizens AdviceUK
- Consumer Rights Act 2015, Part 1, Chapter 4: Serviceslegislation.gov.ukUK
- VAT ratesGOV.UKUK
- CMA to boost consumer and business confidence as new consumer protection regime comes into forceCompetition and Markets AuthorityUK
- How To Avoid a Home Improvement ScamFederal Trade CommissionUS
- Learn About Home Improvement ContractsContractors State License BoardUS
- Register for VATThe Official Platform of the UAE GovernmentUAE & GCC
- Federal Decree-Law No. (8) of 2017 on Value Added TaxFederal Tax AuthorityUAE & GCC
- Federal Law No. (15) of 2020 on Consumer ProtectionUAE LegislationUAE & GCC
- Cabinet Resolution No. (66) of 2023 Concerning the Executive Regulations of Federal Law No. (15) of 2020 Concerning Consumer ProtectionUAE LegislationUAE & GCC