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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 £35. Extension Builder rates vary with location. For example, Complete Building Contractors in Maesteg charges from £35 per hour.

When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Basement Garage House extension Loft Side return

Trusted, recommended Extension Builders

"This is a Garage conversion, no and extension, I could not find the right trade. We have the drawings from the architect. I can attach those for a better estimate. Thanks" - FK9, job posted 22/02/24

"Loft conversion possible ensuite lisburn area" - BELFAST, job posted 21/02/24

"We are looking into adding a bedroom and ensuite into a small bungalow. I can send photos over" - EN6, job posted 21/02/24

"Extend property and attach current outbuildings to main building" - ST3, job posted 21/02/24

"Loft conversion" - ROCHDALE, job posted 21/02/24

"Loft conversion" - B45, job posted 21/02/24

"Loft conversion" - NOTTINGHAM, job posted 20/02/24

"Loft conversion" - LEICESTER, job posted 20/02/24

"To build an extension appox 3m x 1.5m as a shower room and toilet" - NE26, job posted 19/02/24

"Loft conversion" - CAMBRIDGE, job posted 19/02/24

from 370 to 380 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.