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Relax... you have found a reliable extension builder in SW7. M & A UK Ltd is a friendly and reliable company based in SW7 who consider no job as to...
London Construction is an established and experienced local extension builder in SW7. Please contact us for a free, no obligation quote and competi...
A to Z Builders Ltd are here to help customers who need an Extension Builder in SW7. We offer a competitive rate to complete all your extension bui...
F & F Building Services is an established extension buildering business in SW7. We come highly recommended and provide competitive quotes for your ...
H G Builders is an established and experienced local extension builder in SW7. Please contact us for a free, no obligation quote and competitive ra...
Phormwork are here to help customers who need an Extension Builder in SW7. We offer a competitive rate to complete all your extension buildering jo...
Need an Extension Builder in SW7? Koncept Bathrooms has been helping local clients (5 mile radius) with their extension buildering jobs for many ye...
TELEMARK CONSTRUCTION LTD is a trusted extension builder serving customers in SW7 and the surrounding area. Contact us to today to get a competitiv...
From £17,596
Leon is an established and experienced local extension builder in SW7. Please contact us for a free, no obligation quote and competitive rates. Cov...
From £17,484
Experienced extension builder ready to quote for your work. Palm Property Developments Ltd is the best extension builder in SW7. No obligation free...

Underpinning ranges from £17,476 (A to Z Builders Ltd based in SW1P) to £18,100 (H G Builders based in SW6), 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 SW7 by posting a job with HaMuch and we will send it to extension builders in SW7.
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 - £17,753

Two storey extension - £88,379

Build a timber frame extension - £26,253

Build a swimming pool - £81,253

Single storey extension - £60,056

Side return extension - £44,344

Install an RSJ - £2,453

Outbuilding - £10,253

Build a Mansard loft conversion - £52,253

Loft conversion - £36,120

Build a kitchen extension - £42,253

Hip to gable loft conversion - £42,253

Granny annexe - £87,253

Garden office - £10,253

Convert a Garage - £16,253

Garage - £18,753

Build a flat roof extension - £22,253

Build a dormer loft conversion - £42,253

Concrete foundations - £6,503

Convert a bungalow loft - £29,253

Convert a basement - £40,344