Loading TradeMatch
Loading TradeMatch
Comparing platforms for extension builder work in the UK? Here is how TradeMatch and Rated People stack up across the three things that matter for hiring a extension builder: how much you will pay, how well the tradesperson has been vetted, and what happens if the job goes wrong. Average extension builder cost in the UK: £15,000–£50,000.
Updated May 2026 · By TradeMatch Editorial Team
£15,000–£50,000
UK average for extension builder work in 2026. TradeMatch customers typically pay 5–15% less than on Rated People because of competitive quoting and transparent pricing.
Get Free Extension Builder Quotes
| Feature | TradeMatch | Rated People |
|---|---|---|
| Up to 5 extension builder quotes | Yes | Up to 3 |
| Escrow on payment | Yes | No |
| Relevant trade qualifications verified | Yes | Partial |
| Verified reviews only | Yes | Mixed |
| Background checks | Yes | No |
| Dispute resolution for extension builder work | Yes | Limited |
| Job | Low | Average | High |
|---|---|---|---|
| Small job | £80 | £200 | £400 |
| Medium job | £300 | £700 | £1,500 |
| Large job | £1,000 | £2,500 | £5,000 |
| Consultation/survey | £50 | £100 | £250 |
| Emergency callout | £80 | £150 | £300 |
UK average pricing. London and South East run 20–40% higher. Get an exact quote by posting your extension builder job on TradeMatch.

For extension builder work, both platforms have merit — but TradeMatch's combination of 5 quotes, escrow, Relevant trade qualifications verification and dispute resolution means fewer surprises. Rated People's weakness around "Lead costs can be high, especially for competitive trades" matters more on extension builder work than on cosmetic trades.
For extension builder work specifically, TradeMatch offers escrow-protected payments, up to 5 competing quotes and verified reviews from real completed jobs. Rated People lacks payment protection, which matters more for extension builder work because jobs often involve Small job where you want recourse if something goes wrong.
Average extension builder prices on TradeMatch: £15,000–£50,000. Rated People pricing tends to be similar to market rates but without the escrow protection. TradeMatch's competitive quote model typically gets you 5–15% lower prices for extension builder work because professionals compete openly.
A extension builder in the UK should hold Relevant trade qualifications and Public liability insurance. Rated People has lighter qualification checks than TradeMatch. On TradeMatch every extension builder is background-checked, qualification-verified and insurance-validated before being allowed to accept work.
On Rated People, the platform has some mediation but no escrow to hold funds. On TradeMatch, payment sits in escrow until you confirm the work is complete; if there is a dispute, our resolution team mediates and your money stays safe. For extension builder work — where snags like small job are common — this makes a meaningful difference.
Most TradeMatch extension builder jobs receive the first quote within a few hours and 3–5 quotes within 24–48 hours. Rated People typically matches you within a similar timeframe. Posting your extension builder job on TradeMatch is free and only takes 2 minutes.
Both platforms display reviews. Strong review system tied to completed work. Ratings are prominent and hard to manipulate. On TradeMatch, every review is verified — only homeowners who have completed a extension builder job through the platform can leave one. No ability to buy or solicit reviews, and every review stays visible (tradespeople cannot delete negative feedback).
Post your extension builder job free. Up to 5 quotes from vetted UK pros. Escrow-protected payments and verified reviews.
Post a Job Free