Find affordable extension builders
- Trusted, recommended Extension Builders
- Prices for extension builders in the UK
- Find a local builder who can convert your loft or build a side return extension at a great price
- Find out how much extension builder jobs cost
| Low | Average | High |
|---|---|---|
| £13 | £34 | £68 |
| Average hourly rate of 9082 extension builders in the UK excluding VAT or callout charge | ||
Extension Builders in the UK. The average hourly rate of the 10 Extension Builders listed is £32. Extension Builder rates vary with location. For example, Paul Walsh Builders in Hale charges from £31 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Trusted, recommended Extension Builders
J GREEN PLASTERING LTD
J GREEN PLASTERING LTD are here to help customers who need an Extension Builder in Easton. We offer a competitive rate to complete all your extensi...
"Garage conversion (already connected to main house) into an additional bedroom/living space." - BR4, job posted 25/01/25
MSH Construction (Bristol) Ltd
Simon Hill
Relax... you have found a reliable extension builder in Bristol. MSH Construction (Bristol) Ltd is a friendly and reliable company based in Bristol...
"Loft conversion, 2 rooms" - GLOUCESTER, job posted 25/01/25
Smart Building Works
Smart Building Works are here to help customers who need an Extension Builder in Brislington. We offer a competitive rate to complete all your exte...
"Loft conversion" - SHEFFIELD, job posted 25/01/25
J.Stokes Builders
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Two storey extension" - LUTTERWORTH, job posted 25/01/25
Build by Croft
Need an Extension Builder in Wilmslow? Build by Croft has been helping local clients (20 mile radius) with their extension buildering jobs for many...
"RSJ installation" - PLYMOUTH, job posted 25/01/25
G P GILMORE JOINERY T/A
G P GILMORE JOINERY T/A is an established extension buildering business in Urmston. We come highly recommended and provide competitive quotes for...
"Underpinning Look for job underpinning My name oli call me 0750 711x xx" - RM10, job posted 24/01/25
Brookmeade Building
Brookmeade Building is an established extension buildering business in Stretford. We come highly recommended and provide competitive quotes for you...
"Two storey extension" - BRADFORD, job posted 23/01/25
Paul Walsh Builders
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion into en-suite bedroom" - LIVERPOOL, job posted 22/01/25
Denis Gleeson
Denis Gleeson is an established extension buildering business in Didsbury. We come highly recommended and provide competitive quotes for your work....
"RSJ installation over two levels" - EH6, job posted 22/01/25
SupeRend
Relax... you have found a reliable extension builder in Hale. SupeRend is a friendly and reliable company based in Hale who consider no job as too ...
"Single storey extension" - CV10, job posted 22/01/25
from 250 to 260 of 9082
Find out how much extension builder jobs cost
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.




















