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 £47. Extension Builder rates vary with location. For example, Propello in Greater London charges from £70 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.
Trusted, recommended Extension Builders
Alastair McDonald Joinery and Building
We are a family business with over 30 years of knowledge and experience ranging from small domestic jobs to large projects which include renovation...
"Loft conversion" - WS10, job posted 08/05/26
Gems Building & Maintenance Services
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - WD19, job posted 07/05/26
RB Building Services
Need to find an Extension Builder near you for all your extension buildering work?
RB Building Services provides a local, trusted extension...
"Granny annexe space for mum with separate quarters" - S72, job posted 07/05/26
Addison
Addison are here to help customers who need an Extension Builder in Sleaford. We offer a competitive rate to complete all your extension buildering...
"Loft conversion" - NORTHAMPTONSHIRE, job posted 07/05/26
Propello
Ali Alagoz
Propello is an established and experienced local extension builder in Greater London. Please contact us for a free, no obligation quote and compet...
"RSJ installation, I am looking for a price to source and install two beams, photos attached of measurements. Thanks." - BT43, job posted 06/05/26
Imq
Rob Mcmahon
Imq is a trusted extension builder serving customers in Croydon and the surrounding area. Contact us to today to get a competitive quote for extens...
"Ext.dhtyhui bfyjuuijk bhh" - S1, job posted 06/05/26
Gb construction
Gani Bush
Gb construction are here to help customers who need an Extension Builder in Croydon. We offer a competitive rate to complete all your extension bu...
"RSJ installation" - CREWKERNE, job posted 06/05/26
NA Brickwork
Experienced extension builder ready to quote for your work. NA Brickwork is the best extension builder in Sidcup. No obligation free quotes and man...
"Two storey extension" - S20, job posted 06/05/26
JJSR Construction Ltd
J Wijayamohan
JJSR Construction Ltd is an established and experienced local extension builder in Harrow. Please contact us for a free, no obligation quote and co...
"Loft conversion" - B68, job posted 06/05/26
R PEARCE BUILDING
Need an Extension Builder in Chippenham? R PEARCE BUILDING has been helping local clients (20 mile radius) with their extension buildering jobs for...
"Timber frame first floor extension above the garage, with outer leaf brickwork and tiled pitched roof above." - MK6, job posted 04/05/26
from 50 to 60 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.
