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 | £86 |
| Average hourly rate of 9110 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 £41. Extension Builder rates vary with location. For example, Ohanaa Ltd in Slough charges from £46 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.
Trusted, recommended Extension Builders
LJP Roofing
£37/hour
£229/day
LJP Roofing are here to help customers who need an Extension Builder in Shadforth. We offer a competitive rate to complete all your extension build...
"Dormer loft conversion" - L18, job posted 25/02/26
SH Enterprise
£43/hour
£253/day
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
"Single storey kitchen extension within permitted development 3.5 metres in length max" - BB9, job posted 24/02/26
Bspec Ltd
£86/hour
£281/day
At Building Services Contractors we pride ourselves on an efficient and friendly service, and strive to achieve 100% customer satisfaction.
"RSJ installation" - BELFAST, job posted 23/02/26
Ohanaa Ltd
£46/hour
£292/day
Ohanaa Ltd is a trusted extension builder serving customers in Slough and the surrounding area. Contact us to today to get a competitive quote for ...
"Loft conversion" - CAMBRIDGE, job posted 23/02/26
"Full width dormer loft conversion with shower room for 3 bedroom edwardian terrace house" - TN34, job posted 22/02/26
Kiwi Construction
£27/hour
£214/day
Trading since 1997 kitchens,bathrooms lofts patios roof work and much more
"Build a dormer loft conversion - 3 bed edwardian terrace with front and rear loft" - TN34, job posted 22/02/26
X7 Roofing Maintenance
£33/hour
£231/day
Trusted and professional extension builder in Newcastle upon Tyne. Experienced in all extension buildering work and keeping within budget and on qu...
"Single storey extension" - BELFAST, job posted 21/02/26
D TAIT BUILDING & PROP REPAIRS
£36/hour
£262/day
Need an Extension Builder in Newburn? D TAIT BUILDING & PROP REPAIRS has been helping local clients (20 mile radius) with their extension builderin...
"Granny annexe" - CLACTON-ON-SEA, job posted 21/02/26
TK Builders
£35/hour
£251/day
Need to find an Extension Builder near you for all your extension buildering work?
TK Builders provides a local, trusted extension builderi...
"Door into garagefrom kitchen how much" - B74, job posted 20/02/26
D H P Builders
£36/hour
£242/day
D H P Builders is an established extension buildering business in Dunston. We come highly recommended and provide competitive quotes for your work....
"Dormer loft conversion hip to gable" - NE7, job posted 20/02/26
from 60 to 70 of 9110
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.
