We send your job to ALL DA17 extension builders
Available extension builders in DA17 reply
Select your affordable DA17 extension builder
Experienced extension builder ready to quote for your work. Liviu Toma is the best extension builder in DA17. No obligation free quotes and many ha...
Pedro
Need an Extension Builder in DA17? Danni Building Services Ltd has been helping local clients (10 mile radius) with their extension buildering jobs...
SV Roofing & Renovations are here to help customers who need an Extension Builder in DA17. We offer a competitive rate to complete all your extensi...
From £17,756
David Britton
Relax... you have found a reliable extension builder in DA17. Great britton builders is a friendly and reliable company based in DA17 who consider ...
From £17,788
Belvedere, DA17
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,812
Need to find an Extension Builder near you for all your extension buildering work?
Liam Kinsella Ltd provides a local, trusted extension bu...
From £17,588
Belvedere, DA17
Need an Extension Builder in DA17? NEW BUILD MAINTENANCE LTD has been helping local clients (10 mile radius) with their extension buildering jobs f...
From £17,484
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,516
Roger Matharoo
We are family run buisness with great pedigree of enginners.
We have over 40 years knowledge in construction building and are very compe...
From £17,660
Relax... you have found a reliable extension builder in DA17. RSM BUILDING CONTRACTORS is a friendly and reliable company based in DA17 who conside...

Underpinning ranges from £17,468 (SV Roofing & Renovations based in DA8) to £17,812 (Liam Kinsella Ltd based in DA7), 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 DA17 by posting a job with HaMuch and we will send it to extension builders in DA17.
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 - £17,654

Two storey extension - £88,230

Build a timber frame extension - £26,154

Build a swimming pool - £81,154

Single storey extension - £58,072

Side return extension - £43,228

Install an RSJ - £2,354

Outbuilding - £10,154

Build a Mansard loft conversion - £52,154

Loft conversion - £35,190

Build a kitchen extension - £42,154

Hip to gable loft conversion - £42,154

Granny annexe - £87,154

Garden office - £10,154

Convert a Garage - £16,154

Garage - £18,654

Build a flat roof extension - £22,154

Build a dormer loft conversion - £42,154

Concrete foundations - £6,404

Convert a bungalow loft - £29,154

Convert a basement - £39,228