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 £38. Extension Builder rates vary with location. For example, BELLVIEW BUILDERS LTD in Cricklewood charges from £46 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.
Trusted, recommended Extension Builders
"Two storey extension" - TAMESIDE, job posted 04/01/26
We Build
Trusted and professional extension builder in Ashton-under-Lyne. Experienced in all extension buildering work and keeping within budget and on quot...
"Dormer loft conversion" - S65, job posted 04/01/26
Fit-on Garage Doors
Trusted and professional extension builder in Bardsley. Experienced in all extension buildering work and keeping within budget and on quote. Fit-on...
"Single storey extension" - KINGS LYNN, job posted 01/01/26
McClean Builders
McClean Builders are here to help customers who need an Extension Builder in Harpurhey. We offer a competitive rate to complete all your extension ...
"Single storey extension" - LU4, job posted 01/01/26
Northern Garage Conversion
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Attic is already converted, but looking to alter to make space more useable. Potentially consider dormer or dormer windows and fitted storage." - NP18, job posted 30/12/25
QA's Pointing and Brick Repair
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in Battersea. QA's Pointing and Brick Repair is a friendly and reliable company based in Batte...
"Loft conversion" - MK46, job posted 30/12/25
Green Exteriors Ltd
Derren Ward
Green Exteriors Ltd are here to help customers who need an Extension Builder in Rotherham. We offer a competitive rate to complete all your extensi...
"Kitchen extension" - HARLOW, job posted 30/12/25
BELLVIEW BUILDERS LTD
Need to find an Extension Builder near you for all your extension buildering work?
BELLVIEW BUILDERS LTD provides a local, trusted extensio...
"Loft dorma conversion" - M45, job posted 29/12/25
Render
Experienced extension builder ready to quote for your work. Render is the best extension builder in Ilford. No obligation free quotes and many happ...
"Hip to gable loft conversion" - , job posted 28/12/25
Tony Rutter
Need an Extension Builder in Dagenham? Tony Rutter has been helping local clients (10 mile radius) with their extension buildering jobs for many ye...
"Loft conversion" - RH10, job posted 27/12/25
from 90 to 100 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.
