From £17,692
, E9
Carland Builders Ltd are here to help customers who need an Extension Builder in E9. We offer a competitive rate to complete all your extension bui...
From £17,908
Experienced extension builder ready to quote for your work. ATOM BUILD LTD T/A is the best extension builder in E9. No obligation free quotes and m...
From £17,948
London, E9
At House Proud Construction we fit bespoke bathrooms for discerning customers in East London and the surrounding area.It is a well-known fa...
From £17,820
Relax... you have found a reliable extension builder in E9. Carbin Canopy is a friendly and reliable company based in E9 who consider no job as too...
From £17,476
ISLE CONSTRUCTION LTD is a trusted extension builder serving customers in E9 and the surrounding area. Contact us to today to get a competitive quo...
From £17,764
F I X U P are here to help customers who need an Extension Builder in E9. We offer a competitive rate to complete all your extension buildering job...
From £17,684
London, E9
Scandinavian Loft is a trusted extension builder serving customers in E9 and the surrounding area. Contact us to today to get a competitive quote f...
From £17,860
Need an Extension Builder in E9? Sean & Stephen Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many ye...
From £17,836
Need to find an Extension Builder near you for all your extension buildering work?
UCDB Ltd provides a local, trusted extension buildering ...
From £17,748
At Building Services Contractors we pride ourselves on an efficient and friendly service, and strive to achieve 100% customer satisfaction.

Underpinning ranges from £17,476 (ISLE CONSTRUCTION LTD based in E3) to £17,948 (House Proud Construction & Design based in E9), 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 E9 by posting a job with HaMuch and we will send it to extension builders in E9.
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 - £17,774

Two storey extension - £88,410

Build a timber frame extension - £26,274

Build a swimming pool - £81,274

Single storey extension - £60,472

Side return extension - £44,578

Install an RSJ - £2,474

Outbuilding - £10,274

Build a Mansard loft conversion - £52,274

Loft conversion - £36,315

Build a kitchen extension - £42,274

Hip to gable loft conversion - £42,274

Granny annexe - £87,274

Garden office - £10,274

Convert a Garage - £16,274

Garage - £18,774

Build a flat roof extension - £22,274

Build a dormer loft conversion - £42,274

Concrete foundations - £6,524

Convert a bungalow loft - £29,274

Convert a basement - £40,578