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 £41. Extension Builder rates vary with location. For example, Khetani Builders (UK) Ltd in Harlesden charges from £43 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.
Trusted, recommended Extension Builders
Decorating Building Service
Decorating Building Service are here to help customers who need an Extension Builder in Seven Kings. We offer a competitive rate to complete all yo...
"Outbuilding" - SIDCUP, job posted 12/11/25
Sevcan Construction
Relax... you have found a reliable extension builder in Dagenham. Sevcan Construction is a friendly and reliable company based in Dagenham who cons...
"Hip to gable loft conversion" - PAISLEY, job posted 11/11/25
Kunshi Services UK Ltd
Kunshi Services UK Ltd is a trusted extension builder serving customers in Barking and the surrounding area. Contact us to today to get a competiti...
"Garden self contained annex" - B68, job posted 10/11/25
SBS Building Services
Steve Bannister
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
"Loft conversion" - COVENTRY, job posted 08/11/25
A&J BUILDERS & DECORATORS LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"RSJ installation also I will need help with the cost of theses below IRS extension either the following measurements. L-3m w-3.5m H-Item Site Preparation Groundworks & Foundations Floor Construction Superstructure Roof Construction Windows and External Doors Internal Works Electrical ..." - CR3, job posted 08/11/25
Simms Building Services Ltd
Mark Simms
33 years experience focussing on full home refurbishments, extensions, kitchens & bathrooms, rubber roofing, floor screed & loft conversion...
"Two storey extension, to square off the back of the house. This will open up the existing house for a new kitchen, utility and dining room downstairs. Upstairs will open up to create a larger master bedroom, dressing room and en suite." - MORAY, job posted 08/11/25
Khetani Builders (UK) Ltd
Experienced extension builder ready to quote for your work. Khetani Builders (UK) Ltd is the best extension builder in Harlesden. No obligation fre...
"Single storey extension" - STEVENAGE, job posted 08/11/25
SJ Expert Building Services
SJ Expert Building Services are here to help customers who need an Extension Builder in Muswell Hill. We offer a competitive rate to complete all y...
"Loft conversion" - LEICESTER, job posted 08/11/25
NWL Renovations Ltd
Patrick Gavin
Need an Extension Builder in London ? NWL Renovations Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for ...
"Side return extension" - REDBRIDGE, job posted 08/11/25
SLS BUILDERS LIMITED
SLS BUILDERS LIMITED is a trusted extension builder serving customers in Kentish Town and the surrounding area. Contact us to today to get a compet...
"Loft conversion" - BELFAST, job posted 08/11/25
from 100 to 110 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.
