From £17,796
Relax... you have found a reliable extension builder in Bethnal Green. Hannah Construction is a friendly and reliable company based in Bethnal Gree...
From £17,580
Checa Romero is an established and experienced local extension builder in Bethnal Green. Please contact us for a free, no obligation quote and comp...
From £17,860
Need an Extension Builder in Bethnal Green? Sean & Stephen Ltd has been helping local clients (5 mile radius) with their extension buildering jobs ...
From £17,716
Trusted and professional extension builder in Bethnal Green. Experienced in all extension buildering work and keeping within budget and on quote. A...
From £17,764
BLOCK Design & Build is an established extension buildering business in Bethnal Green. We come highly recommended and provide competitive quotes fo...
From £17,428
GS Fabric Ltd is an established and experienced local extension builder in Bethnal Green. Please contact us for a free, no obligation quote and com...
From £18,028
Gabriel Shin is an established and experienced local extension builder in Bethnal Green. Please contact us for a free, no obligation quote and comp...
From £17,836
Pencil and Brick is the collective name for our architect practice and our construction company. We're based in East London.We work on a wide range...
From £17,476
ISLE CONSTRUCTION LTD is a trusted extension builder serving customers in Bethnal Green and the surrounding area. Contact us to today to get a comp...
From £17,908
Experienced extension builder ready to quote for your work. ATOM BUILD LTD T/A is the best extension builder in Bethnal Green. No obligation free q...

Underpinning ranges from £17,428 (GS Fabric Ltd based in E2) to £18,028 (Gabriel Shin based in E1), 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 Bethnal Green by posting a job with HaMuch and we will send it to extension builders in Bethnal Green.
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 - £17,739

Two storey extension - £88,359

Build a timber frame extension - £26,239

Build a swimming pool - £81,239

Single storey extension - £59,784

Side return extension - £44,191

Install an RSJ - £2,439

Outbuilding - £10,239

Build a Mansard loft conversion - £52,239

Loft conversion - £35,993

Build a kitchen extension - £42,239

Hip to gable loft conversion - £42,239

Granny annexe - £87,239

Garden office - £10,239

Convert a Garage - £16,239

Garage - £18,739

Build a flat roof extension - £22,239

Build a dormer loft conversion - £42,239

Concrete foundations - £6,489

Convert a bungalow loft - £29,239

Convert a basement - £40,191