From £17,460
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,820
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in Nine Elms. No obligation f...
From £17,756
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,700
Need an Extension Builder in Nine Elms? Build Team has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £17,596
Murdoch Building Services are here to help customers who need an Extension Builder in Nine Elms. We offer a competitive rate to complete all your e...
From £17,388
Experienced extension builder ready to quote for your work. Sturdy Evolution Developments Ltd is the best extension builder in Nine Elms. No obliga...
From £17,492
Need to find an Extension Builder near you for all your extension buildering work?
BUILD TEAM provides a local, trusted extension builderin...
From £17,956
Our building services company Inside Out Property Refurbishment Ltd have ten years’ experience and have been helping customers in London and the ...
From £17,812
Experienced extension builder ready to quote for your work. Gustav Building Services is the best extension builder in Nine Elms. No obligation free...

Underpinning ranges from £17,388 (Sturdy Evolution Developments Ltd based in SW4) to £17,972 (Emerald Aspects based in SW8), 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 Nine Elms by posting a job with HaMuch and we will send it to extension builders in Nine Elms.
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 - £17,695

Two storey extension - £88,293

Build a timber frame extension - £26,195

Build a swimming pool - £81,195

Single storey extension - £58,904

Side return extension - £43,696

Install an RSJ - £2,395

Outbuilding - £10,195

Build a Mansard loft conversion - £52,195

Loft conversion - £35,580

Build a kitchen extension - £42,195

Hip to gable loft conversion - £42,195

Granny annexe - £87,195

Garden office - £10,195

Convert a Garage - £16,195

Garage - £18,695

Build a flat roof extension - £22,195

Build a dormer loft conversion - £42,195

Concrete foundations - £6,445

Convert a bungalow loft - £29,195

Convert a basement - £39,696