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Walton-on-Thames, KT12
Trusted and professional extension builder in KT12. Experienced in all extension buildering work and keeping within budget and on quote. Pulton Pro...
S T Builders is an established extension buildering business in KT12. We come highly recommended and provide competitive quotes for your work.
...Experienced extension builder ready to quote for your work. AMD Building Services is the best extension builder in KT12. No obligation free quotes ...
From £39,840
With over 50 years experience, G.M. Dowling & Son offer the highest standard in building services.The family run business, headed up by father and ...
From £38,400
Walton, KT12
Need an Extension Builder in KT12? H Vincent Roofing & New UPVC has been helping local clients (10 mile radius) with their extension buildering job...
From £42,090
Curtis Conversions Ltd is an established and experienced local extension builder in KT12. Please contact us for a free, no obligation quote and com...
From £37,140
Robert Ceausu
Need to find an Extension Builder near you for all your extension buildering work?
Built in Time Developments Ltd provides a local, trusted...
From £37,140
Lee Taylor
At Surrey Hills Extend & Renovate we promise Quality and Craftsmanship. We take pride in delivering superior quality in every detail of our work, e...
From £40,200
Walton-on-Thames, KT12
Trusted and professional extension builder in KT12. Experienced in all extension buildering work and keeping within budget and on quote. TIMBERED B...
From £39,210
Brian Pearson
DITTON CONSTRUCTION LIMITED is an established extension buildering business in KT12. We come highly recommended and provide competitive quotes for ...

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 KT12 by posting a job with HaMuch and we will send it to extension builders in KT12.
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 - £17,656

Two storey extension - £88,234

Build a timber frame extension - £26,156

Build a swimming pool - £81,156

Single storey extension - £58,120

Side return extension - £43,255

Install an RSJ - £2,356

Outbuilding - £10,156

Build a Mansard loft conversion - £52,156

Loft conversion - £35,213

Build a kitchen extension - £42,156

Hip to gable loft conversion - £42,156

Granny annexe - £87,156

Garden office - £10,156

Convert a Garage - £16,156

Garage - £18,656

Build a flat roof extension - £22,156

Build a dormer loft conversion - £42,156

Concrete foundations - £6,406

Convert a bungalow loft - £29,156

Convert a basement - £39,255