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 £35. Extension Builder rates vary with location. For example, WOODBINE BUILDING CONT LTD in Lymm charges from £28 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.
Trusted, recommended Extension Builders
Master Builders
Need to find an Extension Builder near you for all your extension buildering work?
Master Builders provides a local, trusted extension buil...
"Loft conversion" - HARROW, job posted 04/04/26
UNIVERSAL CONSTRUCTION
Relax... you have found a reliable extension builder in Swanley. UNIVERSAL CONSTRUCTION is a friendly and reliable company based in Swanley who con...
"I am seeking an estimate for a loft conversion. This should include structural design. Hip to gable dormer, with a toilet and sink." - UB5, job posted 01/04/26
POVERSET BUILDING COMPANY
Curtis Archer
Relax... you have found a reliable extension builder in Petts Wood. POVERSET BUILDING COMPANY is a friendly and reliable company based in Petts Woo...
"Knocking through structural wall. requires RSJ installation. I have structural plans and calculations if that helps" - CB23, job posted 31/03/26
Kaizen Building & Construction
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
"Cost to build a side return extension" - BN2, job posted 30/03/26
D WHYTON BUILDING SERVICES LTD
D WHYTON BUILDING SERVICES LTD is a trusted extension builder serving customers in Portland and the surrounding area. Contact us to today to get a ...
"Dormer loft conversion" - IPSWICH, job posted 30/03/26
T M Builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Brick double story extension" - OL4, job posted 30/03/26
J.T.Construction
J.T.Construction is a trusted extension builder serving customers in Great Sankey and the surrounding area. Contact us to today to get a competitiv...
"A downstairs loo I think the wall will have to be knocked through from inside" - BA14, job posted 26/03/26
Fixit Cheshire
Fixit Cheshire is an established and experienced local extension builder in Great Sankey. Please contact us for a free, no obligation quote and com...
"RSJ installation" - BS14, job posted 25/03/26
WOODBINE BUILDING CONT LTD
Trusted and professional extension builder in Lymm. Experienced in all extension buildering work and keeping within budget and on quote. WOODBINE B...
"Gallow brackets or rsj beam fitted into a loft to support a chimney breast which is currently supported by timber" - BS15, job posted 25/03/26
JOHN ROSS BUILDERS LTD
Need to find an Extension Builder near you for all your extension buildering work?
JOHN ROSS BUILDERS LTD provides a local, trusted extensi...
"Single story extension" - S60, job posted 24/03/26
from 60 to 70 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.
