From £6,234
New Malden, KT3
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,642
Eagle Eye Building has been helping customers in New Malden and the surrounding area by providing professional, trustworthy building services.
From £6,178
New Malden, KT3
WILDE BUILDING CONTRACTORS LTD is an established extension buildering business in KT3. We come highly recommended and provide competitive quotes fo...
From £6,682
Trusted and professional extension builder in KT3. Experienced in all extension buildering work and keeping within budget and on quote. Gordon Dick...
From £6,282
Greater London, KT3
Relax... you have found a reliable extension builder in KT3. Galaxy Extend is a friendly and reliable company based in KT3 who consider no job as t...
From £6,538
Linkfern Limited is an established extension buildering business in KT3. We come highly recommended and provide competitive quotes for your work.
From £6,362
New Malden, KT3
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,386
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,498
New Malden, KT3
Trusted and professional extension builder in KT3. Experienced in all extension buildering work and keeping within budget and on quote. Racsel Buil...
From £6,514
Need to find an Extension Builder near you for all your extension buildering work?
Racsel Building Services Ltd provides a local, trusted e...

Concrete foundations range from the £6,178 (WILDE BUILDING CONTRACTORS LTD based in KT3) to £6,682 (Gordon Dicks based in KT3) in KT3.
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 KT3 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 - £17,682

Two storey extension - £88,272

Build a timber frame extension - £26,182

Build a swimming pool - £81,182

Single storey extension - £58,632

Side return extension - £43,543

Install an RSJ - £2,382

Outbuilding - £10,182

Build a Mansard loft conversion - £52,182

Loft conversion - £35,453

Build a kitchen extension - £42,182

Hip to gable loft conversion - £42,182

Granny annexe - £87,182

Garden office - £10,182

Convert a Garage - £16,182

Garage - £18,682

Build a flat roof extension - £22,182

Build a dormer loft conversion - £42,182

Concrete foundations - £6,432

Convert a bungalow loft - £29,182

Convert a basement - £39,543