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 9080 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, R Tredget & Son in 2 Park Mead, Sidcup, Kent charges from £48 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Trusted, recommended Extension Builders
BeautifulRenovation
BeautifulRenovation are here to help customers who need an Extension Builder in Slough. We offer a competitive rate to complete all your extension ...
"Buliding an extension for kitchen 4by 4 meters and dump proof layers and insulation" - NG10, job posted 09/11/23
Our Builders Ltd
Max Dixon
We are a construction company specialising in all aspects of building works, loft construction Extension complete home renovation, structural ...
"Truss Loft conversion" - LU2, job posted 09/11/23
Sherry Construction
Experienced extension builder ready to quote for your work. Sherry Construction is the best extension builder in Farham Common. No obligation free ...
"Loft conversion. I'm looking to convert my loft to a Dormer Loft conversion bedroom with ensuite shower room on St John's Grove, Harrogate. My house is a relatively small semi detached, so I assume will be on the smaller side of loft conversions undertaken. My budget will be in the region of 30k...." - HARROGATE, job posted 08/11/23
EIC Builders Ltd
EIC Builders Ltd are here to help customers who need an Extension Builder in Farham Common. We offer a competitive rate to complete all your extens...
"Side return extension" - TN38, job posted 07/11/23
BDR Home Improvement
BDR Home Improvement are here to help customers who need an Extension Builder in Colnbrook. We offer a competitive rate to complete all your extens...
"Fit new membrane to roof toilet vent" - SA71, job posted 06/11/23
SMJ Construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - BIRMINGHAM, job posted 06/11/23
Cre8tive Contractors Ltd
Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in Beckenham. We offer a competitive rate to complete all your ex...
"Loft conversion" - LEICESTER, job posted 06/11/23
R Tredget & Son
R Tredget & Son are here to help customers who need an Extension Builder in 2 Park Mead, Sidcup, Kent. We offer a competitive rate to complete all ...
"Side return extension" - ST ALBANS, job posted 06/11/23
Have Faith Plasterers
Have Faith Plasterers is an established and experienced local extension builder in West Bromwich. Please contact us for a free, no obligation quote...
"Dolmer Loft conversion" - LEICESTER, job posted 05/11/23
"Loft conversion with window stairs for bedrooms including shower and toilet" - BT17, job posted 05/11/23
from 410 to 420 of 9080
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.




















