From £17,684
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £17,452
Need to find an Extension Builder near you for all your extension buildering work?
All Point Building provides a local, trusted extension b...
From £17,708
E R HEMMINGS (BUILDING) LTD is an established and experienced local extension builder in BS37. Please contact us for a free, no obligation quote an...
From £17,396
E R HEMMINGS (BUILDING) LTD are here to help customers who need an Extension Builder in BS37. We offer a competitive rate to complete all your exte...
From £17,396
LJS General Builders is a trusted extension builder serving customers in BS37 and the surrounding area. Contact us to today to get a competitive qu...
From £17,700
Trusted and professional extension builder in BS37. Experienced in all extension buildering work and keeping within budget and on quote. C M M Buil...
From £17,764
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,588
NEW ENGLAND CONSTRUCTION LTD are here to help customers who need an Extension Builder in BS37. We offer a competitive rate to complete all your ext...
From £17,692
Hello, we are small company that we can do all building jobs like roofing, loft conversion,Garage conversion, extension, house renovation, slabs an...
From £18,044
GARY G BOND LIMITED are here to help customers who need an Extension Builder in BS37. We offer a competitive rate to complete all your extension bu...

Underpinning ranges from £17,396 (E R HEMMINGS (BUILDING) LTD based in BS37) to £18,044 (GARY G BOND LIMITED based in BS16), 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 BS37 by posting a job with HaMuch and we will send it to extension builders in BS37.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Yate | £28 | £223 |
| Underpin A Building near South Gloucestershire | £29 | £223 |
| Underpin A Building near Bradley Stoke | £29 | £221 |
| Underpin A Building near Kingswood | £29 | £223 |
| Underpin A Building near Bristol | £29 | £222 |
| Underpin A Building near Keynsham | £29 | £222 |
| Underpin A Building near Clifton | £29 | £222 |
| Underpin A Building near Chippenham | £29 | £218 |
| Underpin A Building near Portishead | £29 | £221 |
| Underpin A Building near Bath | £28 | £221 |
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 - £17,642

Two storey extension - £88,214

Build a timber frame extension - £26,142

Build a swimming pool - £81,142

Single storey extension - £57,848

Side return extension - £43,102

Install an RSJ - £2,342

Outbuilding - £10,142

Build a Mansard loft conversion - £52,142

Loft conversion - £35,085

Build a kitchen extension - £42,142

Hip to gable loft conversion - £42,142

Granny annexe - £87,142

Garden office - £10,142

Convert a Garage - £16,142

Garage - £18,642

Build a flat roof extension - £22,142

Build a dormer loft conversion - £42,142

Concrete foundations - £6,392

Convert a bungalow loft - £29,142

Convert a basement - £39,102