Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in SY23 by posting a job with HaMuch and we will send it to extension builders in SY23.
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.
Underpin a building - £15,500
Two storey extension - £85,000
Build a timber frame extension - £24,000
Build a swimming pool - £79,000
Single storey extension - £15,000
Side return extension - £19,000
Install an RSJ - £200
Outbuilding - £8,000
Build a Mansard loft conversion - £50,000
Loft conversion - £15,000
Build a kitchen extension - £40,000
Hip to gable loft conversion - £40,000
Granny annexe - £85,000
Garden office - £8,000
Convert a Garage - £14,000
Garage - £16,500
Build a flat roof extension - £20,000
Build a dormer loft conversion - £40,000
Concrete foundations - £4,250
Convert a bungalow loft - £27,000
Convert a basement - £15,000