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 9078 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, COS CONSTRUCTION LTD in Coventry charges from £29 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Trusted, recommended Extension Builders
Fox Windows & Doors Ltd
At Fox, we offer a fantastic collection of products for you to choose from including a range of double-glazed windows (available in aluminium and u...
"Loft conversion" - MANOR PARK, job posted 26/06/24
JD PLANT GRDWRK SPECIALIST LTD
James Davis
J D Plant Groundwork is a well established construction company providing value-added engineering, construction and service skills to customers for...
"Swimming pool" - LINCOLNSHIRE, job posted 26/06/24
B S V CONSTRUCTION SER LTD
Paul Frost
Need to find an Extension Builder near you for all your extension buildering work?
B S V CONSTRUCTION SER LTD provides a local, trusted ext...
"Loft conversion" - DACORUM, job posted 24/06/24
full circle garden and design
Paul Bantock
Need to find an Extension Builder near you for all your extension buildering work?
full circle garden and design provides a local, trusted ...
"Loft conversion" - AL4, job posted 24/06/24
Brian McPhillips Limited
Experienced extension builder ready to quote for your work. Brian McPhillips Limited is the best extension builder in Penicuik. No obligation free ...
"Loft conversion" - DOVER, job posted 24/06/24
Jon Howard Construction Ltd
Jon Howard Construction Ltd is a trusted extension builder serving customers in Waltham abbey and the surrounding area. Contact us to today to get ...
"New Kitchen extension & Side Extension with Utility Room from October 2024 - March 2025" - BURGESS HILL, job posted 23/06/24
D & R Roofing & Loft Conversions, Building & Design
Relax... you have found a reliable extension builder in Wallington. D & R Roofing & Loft Conversions, Building & Design is a friendly and reliable ...
"Velux Loft conversion on 3rd floor tenement, architectural plans and building warrant already secured. Installation of 5 velux windows and 2 sky lights. Adding 3 bedrooms upstairs and a utility room in the extension. On the existing floor, knocking through a partition wall and moving the ikea..." - EH6, job posted 23/06/24
AJ Solutions
AJ Solutions is an established extension buildering business in 1 Wood Cottages, Sealand, Chester, Chesh. We come highly recommended and provide co...
"Loft conversion" - SUNDERLAND, job posted 22/06/24
Benton Builders
Benton Builders is an established and experienced local extension builder in Henley-in-Arden. Please contact us for a free, no obligation quote and...
"Garage" - BRACKNELL FOREST, job posted 22/06/24
COS CONSTRUCTION LTD
COS CONSTRUCTION LTD is an established and experienced local extension builder in Coventry. Please contact us for a free, no obligation quote and c...
"Looking at having a dormer loft conversion Semi detached 4 bed property" - DE23, job posted 21/06/24
from 330 to 340 of 9078
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.




















