From £37,320
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 £41,910
Eagle Eye Building has been helping customers in New Malden and the surrounding area by providing professional, trustworthy building services.
From £36,690
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 £42,360
Trusted and professional extension builder in KT3. Experienced in all extension buildering work and keeping within budget and on quote. Gordon Dick...
From £37,860
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 £40,740
Linkfern Limited is an established extension buildering business in KT3. We come highly recommended and provide competitive quotes for your work.
From £38,760
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 £39,030
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £40,290
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 £40,470
Need to find an Extension Builder near you for all your extension buildering work?
Racsel Building Services Ltd provides a local, trusted e...

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 KT3 by posting a job with HaMuch and we will send it to extension builders in KT3.
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