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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 £37. Extension Builder rates vary with location. For example, Avonvale Garage Doors in Shirley charges from £31 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

"Side return extension" - SWANSEA, job posted 26/07/24

"Loft conversion" - AYLESBURY VALE, job posted 26/07/24

"Loft conversion" - BIRMINGHAM, job posted 26/07/24

"Loft conversion with 2 bedrooms and a bathroom" - BIRMINGHAM, job posted 25/07/24

"Loft conversion" - BRIGHTON, job posted 25/07/24

"Garage" - LEEDS, job posted 25/07/24

"Side return extension" - TRAFFORD, job posted 24/07/24

"I have a triangle shaped loft but want to expand it to make it dormer on one side. The size is approximately 10 m x 3m. I want to expand it outwards. Please send quotes via email." - BOLTON, job posted 23/07/24

"Rear extension End terrace 5 x 3m" - BRISTOL, job posted 23/07/24

"Single storey extension" - SOUTHEND, job posted 22/07/24

from 310 to 320 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.