From £6,138
Surrey, KT18
1st Roofing Specialists Ltd is a trusted extension builder serving customers in KT18 and the surrounding area. Contact us to today to get a competi...
From £6,434
Trusted and professional extension builder in KT18. Experienced in all extension buildering work and keeping within budget and on quote. NCL CONSTR...
From £6,538
Epsom, KT18
SAS Build are here to help customers who need an Extension Builder in KT18. We offer a competitive rate to complete all your extension buildering j...
From £6,346
Me is an established extension buildering business in KT18. We come highly recommended and provide competitive quotes for your work.
From £6,586
Surrey, KT18
DTS BUILD LTD. are here to help customers who need an Extension Builder in KT18. We offer a competitive rate to complete all your extension builder...
From £5,810
Experienced extension builder ready to quote for your work. Priority Roofbuild Ltd is the best extension builder in KT18. No obligation free quotes...
From £6,314
Grand Nests is an established extension buildering business in KT18. We come highly recommended and provide competitive quotes for your work.
From £6,354
Relax... you have found a reliable extension builder in KT18. M & R BUILDING SERVICES is a friendly and reliable company based in KT18 who consider...
From £6,578
Surrey, KT18
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,218
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Concrete foundations range from the £5,810 (Priority Roofbuild Ltd based in KT17) to £6,586 (DTS BUILD LTD. based in KT18) in KT18.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Find out the exact cost of laying concrete foundations in KT18 by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
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 - £17,582

Two storey extension - £88,122

Build a timber frame extension - £26,082

Build a swimming pool - £81,082

Single storey extension - £56,632

Side return extension - £42,418

Install an RSJ - £2,282

Outbuilding - £10,082

Build a Mansard loft conversion - £52,082

Loft conversion - £34,515

Build a kitchen extension - £42,082

Hip to gable loft conversion - £42,082

Granny annexe - £87,082

Garden office - £10,082

Convert a Garage - £16,082

Garage - £18,582

Build a flat roof extension - £22,082

Build a dormer loft conversion - £42,082

Concrete foundations - £6,332

Convert a bungalow loft - £29,082

Convert a basement - £38,418