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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	£68
Average hourly rate of 9080 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, in Dover charges from £33 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

"Outbuilding" - HANWELL, job posted 03/06/24

"Loft conversion" - DUNMOW, job posted 03/06/24

"Loft conversion" - TWICKENHAM, job posted 03/06/24

"Kitchen extension" - OL9, job posted 01/06/24

"Loft conversion with design on a two bedroom semi-detached house" - SHEFFIELD, job posted 30/05/24

"Single storey extension" - LETCHWORTH, job posted 30/05/24

"Loft conversion" - READING, job posted 30/05/24

"I’m looking to convert loft into a bedroom" - KINGSTON-UPON-HULL, job posted 29/05/24

"Loft conversion" - ROCHDALE, job posted 29/05/24

"Extend to rear a 2 bed bungalow" - BT36, job posted 27/05/24

from 340 to 350 of 9080

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.