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 | £86 |
| Average hourly rate of 9110 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, Banga Decoration in Thornton Heath &croy charges from £80 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.
Trusted, recommended Extension Builders
JOHN WATTS PROPERTY MAINTENANCE
£18/hour
£164/day
I have been in business for 20years. I like to do a good job. The area covered is mainly mid Devon, I will travel to other areas if required.
"Hi we’re looking for a quote into getting a small extension built We have bathroom and kitchen on back of house and wanting to open kitchen up We have a wall in between the kitchen and bathroom which needs knocking down for the extension to work otherwise it won’t be needed looking to find out..." - NE3, job posted 15/10/25
WMP Builders
£61/hour
£342/day
An experienced quality tradesman who is a member of the federation of master builders.
Any projects will be undertaken safely, professio...
"Hi we’re looking for a quote into getting a small extension built We have bathroom and kitchen on back of house and wanting to open kitchen up We have a wall in between the kitchen and bathroom which needs knocking down for the extension to work otherwise it won’t be needed looking to find out..." - NE6, job posted 15/10/25
ABS Abbott Preservation
£32/hour
£244/day
Experienced extension builder ready to quote for your work. ABS Abbott Preservation is the best extension builder in Langport. No obligation free q...
"Two storey extension" - , job posted 15/10/25
"Loft conversion" - BEACONSFIELD, job posted 15/10/25
Radici Construction North East Ltd
£78/hour
£364/day
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
"Loft conversion with or without a dormer" - BD4, job posted 14/10/25
Banga Decoration
£80/hour
£400/day
Member since August 2025
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
"Underpinning" - , job posted 14/10/25
RAJANIS CONSTRUCTION
£46/hour
£289/day
Relax... you have found a reliable extension builder in Streatham. RAJANIS CONSTRUCTION is a friendly and reliable company based in Streatham who c...
"2 story extension back of house extended kitchen extra 2 bedrooms" - NORTH TYNESIDE, job posted 13/10/25
Langston Builders
£42/hour
£263/day
Langston Builders is a trusted extension builder serving customers in Tooting and the surrounding area. Contact us to today to get a competitive qu...
"Garage conversion" - , job posted 13/10/25
Local Building Services
£40/hour
£252/day
Trusted and professional extension builder in Streatham. Experienced in all extension buildering work and keeping within budget and on quote. Local...
"Building work walls repaired ceilings repaired etc" - S65, job posted 12/10/25
PROBUILDER
£37/hour
£235/day
PROBUILDER is a trusted extension builder serving customers in Streatham and the surrounding area. Contact us to today to get a competitive quote f...
"Dormer loft conversion Detached house in GL52 5BW" - CHELTENHAM, job posted 12/10/25
from 100 to 110 of 9110
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.
