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, Spread the Joy in Birstall charges from £30 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Trusted, recommended Extension Builders
Couch Property
We assist the owners of neglected properties in refurbishing and marketing those properties for re-sale at an optimised value.Studies show that ‘...
"Single storey wraparound extension vs single storey side extension plus rear double extension" - SHEFFIELD, job posted 02/01/25
John Roper - Joiner & Builder
John Roper - Joiner & Builder is an established and experienced local extension builder in Wilmslow. Please contact us for a free, no obligation qu...
"Garage conversion" - WEST SUSSEX, job posted 02/01/25
Assured Building Solutions
Assured Building Solutions is an established extension buildering business in Manchester. We come highly recommended and provide competitive quotes...
"Loft conversion" - CHESTER, job posted 01/01/25
T Clarke Builders
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Two storey extension" - GATESHEAD, job posted 01/01/25
FIRST FORMAT BUILDING
Need to find an Extension Builder near you for all your extension buildering work?
FIRST FORMAT BUILDING provides a local, trusted extensio...
"Single storey extension" - HARTLEPOOL, job posted 31/12/24
Fantastic Finishing
Relax... you have found a reliable extension builder in Ely. Fantastic Finishing is a friendly and reliable company based in Ely who consider no jo...
"Modifications to existing buildings and create new extension We have full drawings available for download" - GL7, job posted 30/12/24
A Sindall Building
Need to find an Extension Builder near you for all your extension buildering work?
A Sindall Building provides a local, trusted extension b...
"Loft conversion" - CHESHIRE, job posted 30/12/24
Nouvell Decor
Mark Garnett
Nouvell Decor is a trusted extension builder serving customers in Loughton and the surrounding area. Contact us to today to get a competitive quote...
"Side return extension" - SOUTH OXFORDSHIRE, job posted 30/12/24
Spread the Joy
Experienced extension builder ready to quote for your work. Spread the Joy is the best extension builder in Birstall. No obligation free quotes and...
"Loft conversion" - THANET, job posted 30/12/24
DAVIES BUILDERS LTD
Need to find an Extension Builder near you for all your extension buildering work?
DAVIES BUILDERS LTD provides a local, trusted extension ...
"Loft conversion with en suite" - CARDIFF, job posted 29/12/24
from 260 to 270 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.




















