From £17,828
Need to find an Extension Builder near you for all your extension buildering work?
Reconstruction provides a local, trusted extension build...
From £17,572
Bow, E3
Experienced extension builder ready to quote for your work. Glenward Builders Ltd is the best extension builder in Bow. No obligation free quotes a...
From £17,860
Relax... you have found a reliable extension builder in Bow. Darren & Valentin Construction & Maintenance is a friendly and reliable company based ...
From £17,764
Greater London, E3
F I X U P are here to help customers who need an Extension Builder in Bow. We offer a competitive rate to complete all your extension buildering jo...
From £17,452
Hudson Bespoke Buildings is a trusted extension builder serving customers in Bow and the surrounding area. Contact us to today to get a competitive...
From £17,476
Bow, E3
ISLE CONSTRUCTION LTD is a trusted extension builder serving customers in Bow and the surrounding area. Contact us to today to get a competitive qu...
From £17,868
We're a team of builders and tradespeople who aim to provide quality service to people looking to renovate and build their dream home. We are sick ...
From £17,764
Andy Tunmer Building Services is an established and experienced local extension builder in Bow. Please contact us for a free, no obligation quote a...
From £17,852
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,716
Trusted and professional extension builder in Bow. Experienced in all extension buildering work and keeping within budget and on quote. AB Building...

Underpinning ranges from £17,452 (Hudson Bespoke Buildings based in E15) to £17,868 (Team Constructions based in E14), 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 Bow by posting a job with HaMuch and we will send it to extension builders in Bow.
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 - £17,715

Two storey extension - £88,323

Build a timber frame extension - £26,215

Build a swimming pool - £81,215

Single storey extension - £59,304

Side return extension - £43,921

Install an RSJ - £2,415

Outbuilding - £10,215

Build a Mansard loft conversion - £52,215

Loft conversion - £35,768

Build a kitchen extension - £42,215

Hip to gable loft conversion - £42,215

Granny annexe - £87,215

Garden office - £10,215

Convert a Garage - £16,215

Garage - £18,715

Build a flat roof extension - £22,215

Build a dormer loft conversion - £42,215

Concrete foundations - £6,465

Convert a bungalow loft - £29,215

Convert a basement - £39,921