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 £44. Extension Builder rates vary with location. For example, KERFIELD BUILDING SERVICES LTD in Emerson Park charges from £41 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Trusted, recommended Extension Builders
JOHN KERR BRICKWORK & BUILDING
John Kerr
JOHN KERR BRICKWORK & BUILDING is an established extension buildering business in Birstall. We come highly recommended and provide competitive quot...
"Loft conversion spring/summer 2025, we are looking for quote.." - RM13, job posted 30/11/24
KERFIELD BUILDING SERVICES LTD
Need to find an Extension Builder near you for all your extension buildering work?
KERFIELD BUILDING SERVICES LTD provides a local, trusted...
"Loft dormer conversion" - BOLTON, job posted 30/11/24
Prendi Construction Ltd
Peter Prendi
Prendi Construction Ltd is an established and experienced local extension builder in Romford. Please contact us for a free, no obligation quote and...
"Loft conversion with full rear domer, front velux. 1 bed plus ensuite. Potentially 1 fix only" - CHELTENHAM, job posted 30/11/24
Guven Buildings LTD
Hikmet Guven
skilled worker who specializes in completing a wide range of building and renovation projects
"Concrete foundation" - STIRLING, job posted 30/11/24
J Mchayle & Sons
J Mchayle & Sons are here to help customers who need an Extension Builder in Rush Green. We offer a competitive rate to complete all your extension...
"Side extension over garage" - BS34, job posted 30/11/24
MD Building & Project Management Ltd
Need an Extension Builder in Romford? MD Building & Project Management Ltd has been helping local clients (10 mile radius) with their extension bui...
"Dormer loft conversion, Edwardian semi. wanting a dormer loft conversion with a bedroom and ensuite. Not sure if I can afford it. Haven't got plans yet as wanted to get a realistic price before paying for plans. M16 Old Trafford on cusp of Chorlton/Whalley range." - MANCHESTER, job posted 28/11/24
Building Vision London Ltd
Building Vision London Ltd is a trusted extension builder serving customers in London and the surrounding area. Contact us to today to get a compet...
"Side return extension" - CHESTER, job posted 28/11/24
Anji Construction
Need the extension buildering job done quickly without breaking the bank? Anji Construction offer fast, reliable, and affordable extension builderi...
"Single storey extension" - WYTHENSHAWE, job posted 28/11/24
SS Home Builders
SS Home Builders is a trusted extension builder serving customers in Romford and the surrounding area. Contact us to today to get a competitive quo...
"Side return extension" - CV6, job posted 26/11/24
S A BUILDERS & CONTRACTORS LTD
S A BUILDERS & CONTRACTORS LTD is a trusted extension builder serving customers in Rush Green and the surrounding area. Contact us to today to get ...
"Kitchen extension" - FROME, job posted 26/11/24
from 270 to 280 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.




















