From £17,644
Stoneleigh, KT17
Trusted and professional extension builder in KT17. Experienced in all extension buildering work and keeping within budget and on quote. YORKE CONS...
From £17,972
I am a profesional work contractor who can put your whole project together. I will assume complete responsibility for the work contracted and give ...
From £17,580
Need an Extension Builder in KT17? Jewel Group Ltd has been helping local clients (10 mile radius) with their extension buildering jobs for many ye...
From £17,060
Experienced extension builder ready to quote for your work. Priority Roofbuild Ltd is the best extension builder in KT17. No obligation free quotes...
From £17,780
Need an Extension Builder in KT17? SJD Building Services has been helping local clients (10 mile radius) with their extension buildering jobs for m...
From £17,564
Grand Nests is an established extension buildering business in KT17. We come highly recommended and provide competitive quotes for your work.
From £17,836
DTS BUILD LTD. are here to help customers who need an Extension Builder in KT17. We offer a competitive rate to complete all your extension builder...
From £17,884
Trusted and professional extension builder in KT17. Experienced in all extension buildering work and keeping within budget and on quote. CJC BUILDE...
From £17,580
Need to find an Extension Builder near you for all your extension buildering work?
Hunt Roofing Ltd provides a local, trusted extension bui...
From £17,716
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £17,060 (Priority Roofbuild Ltd based in KT17) to £17,972 (KJ Construction LTD based in kt17), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in KT17 by posting a job with HaMuch and we will send it to extension builders in KT17.
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 - £17,662

Two storey extension - £88,242

Build a timber frame extension - £26,162

Build a swimming pool - £81,162

Single storey extension - £58,232

Side return extension - £43,318

Install an RSJ - £2,362

Outbuilding - £10,162

Build a Mansard loft conversion - £52,162

Loft conversion - £35,265

Build a kitchen extension - £42,162

Hip to gable loft conversion - £42,162

Granny annexe - £87,162

Garden office - £10,162

Convert a Garage - £16,162

Garage - £18,662

Build a flat roof extension - £22,162

Build a dormer loft conversion - £42,162

Concrete foundations - £6,412

Convert a bungalow loft - £29,162

Convert a basement - £39,318