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Jonathan Rimmer
Experienced extension builder ready to quote for your work. Mr is the best extension builder in W12. No obligation free quotes and many happy custo...
Vas Constructs
RUBBERCOVER™ EPDM Permaroof rubber cover and roof system. Lead flashing. NCTS. Timber Frame Buildings. Refurbish fit out, structural ...
Relax... you have found a reliable extension builder in W12. M & A UK Ltd is a friendly and reliable company based in W12 who consider no job as to...
Newpark Construction are here to help customers who need an Extension Builder in W12. We offer a competitive rate to complete all your extension bu...
At Ferdas Design & Build Ltd we have been fitting bespoke bathrooms since 2013. We pride ourselves on being the go-to bathroom fitters for discerni...
Tomasz Pedowicz
Hi we have 15 years of experience in building and construction industry our specialization is bathrooms and renovations please have a look at the w...
Shepherd's Bush, W12
Experienced extension builder ready to quote for your work. HUGHES BUILDERS is the best extension builder in W12. No obligation free quotes and man...
R Burton & Sons Builders are here to help customers who need an Extension Builder in W12. We offer a competitive rate to complete all your extensio...
Shepherd's Bush, W12
Need to find an Extension Builder near you for all your extension buildering work?
Heaven Sent Construction provides a local, trusted exten...
LINE BUILDERS LTD is an established extension buildering business in W12. We come highly recommended and provide competitive quotes for your work.<...

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 W12 by posting a job with HaMuch and we will send it to extension builders in W12.
"Basement conversion" - W4, job posted 08/07/23
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 - £17,871

Two storey extension - £88,557

Build a timber frame extension - £26,371

Build a swimming pool - £81,371

Single storey extension - £62,424

Side return extension - £45,676

Install an RSJ - £2,571

Outbuilding - £10,371

Build a Mansard loft conversion - £52,371

Loft conversion - £37,230

Build a kitchen extension - £42,371

Hip to gable loft conversion - £42,371

Granny annexe - £87,371

Garden office - £10,371

Convert a Garage - £16,371

Garage - £18,871

Build a flat roof extension - £22,371

Build a dormer loft conversion - £42,371

Concrete foundations - £6,621

Convert a bungalow loft - £29,371

Convert a basement - £41,676