Job estimates from extension builders near you
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.

Timber frame extension - £25,848

Garden office - £9,848

Granny annexe - £86,848

Flat roof extension - £21,848

Garage conversion - £15,848

Hip to gable loft conversion - £41,848

Bungalow loft conversion - £28,848

Dormer loft conversion - £41,848

Swimming pool - £80,848

Mansard loft conversion - £51,848

Concrete foundation - £6,098

Underpinning - £17,348

Two storey extension - £87,772

Basement conversion - £35,790

Side return extension - £39,790

Loft conversion - £32,325

Garage - £18,348

Single storey extension - £51,960

Outbuilding - £9,848

RSJ installation - £2,048

Kitchen extension - £41,848
People in HP14 searching for a Extension Builder also viewed...
The Largest Database of UK Trade Rates
At HaMuch we know what tradespeople charge because we have the largest database of rates anywhere in the UK. If you want quotes for jobs at the right price for you, post your jobs with HaMuch and get your home improvements kickstarted straight away!
