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Trusted, recommended Extension Builders
Prices for extension builders in the UK
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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 £48. Extension Builder rates vary with location. For example, UNIVERSAL CONSTRUCTION in Swanley charges from £39 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

"2 storey extension to the with large kitchen diner on ground floor and master bedroom, so ensuite and family bathroom upstairs" - BT67, job posted 10/06/26

"Suppliers are invited to express interest in a tender opportunity for the supply of building construction materials to support public sector projects within the Bury area. Requirements may include construction products, aggregates, timber, concrete, building supplies, and related materials...." - BL9, job posted 09/06/26

"Loft conversion" - CH41, job posted 09/06/26

"My wall outside back it falling down small wall. Repairing my front wall that crumbling. Quote etc. thanks" - SS14, job posted 08/06/26

"Half loft extension. Add dorma roof" - LS17, job posted 08/06/26

"Half loft extension ie just add dorma. Stairs and bathroom already in" - LS17, job posted 08/06/26

"Two storey extension" - PL3, job posted 07/06/26

"I want to extend my one room" - GU11, job posted 06/06/26

"Single storey extension" - LU4, job posted 06/06/26

"Garage conversion" - , job posted 06/06/26

from 40 to 50 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.