From £17,588
NEW ENGLAND CONSTRUCTION LTD are here to help customers who need an Extension Builder in South Gloucestershire. We offer a competitive rate to comp...
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 £17,300
Need an Extension Builder in South Gloucestershire? SOUTH WEST ELITE BUILDING CONT has been helping local clients (20 mile radius) with their exten...
From £18,044
GARY G BOND LIMITED are here to help customers who need an Extension Builder in South Gloucestershire. We offer a competitive rate to complete all ...
From £17,708
E R HEMMINGS (BUILDING) LTD is an established and experienced local extension builder in South Gloucestershire. Please contact us for a free, no ob...
From £17,396
E R HEMMINGS (BUILDING) LTD are here to help customers who need an Extension Builder in South Gloucestershire. We offer a competitive rate to compl...
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 £17,396
LJS General Builders is a trusted extension builder serving customers in South Gloucestershire and the surrounding area. Contact us to today to get...
From £17,412
Relax... you have found a reliable extension builder in South Gloucestershire. MR BUILDING SERVICES is a friendly and reliable company based in Sou...
From £17,580
HYATT BUILDING SERVICES are here to help customers who need an Extension Builder in South Gloucestershire. We offer a competitive rate to complete ...

Underpinning ranges from £17,300 (SOUTH WEST ELITE BUILDING CONT based in BS16) 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 South Gloucestershire by posting a job with HaMuch and we will send it to extension builders in South Gloucestershire.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near South Gloucestershire | £34 | £260 |
| Underpin A Building near Yate | £34 | £263 |
| Underpin A Building near Bradley Stoke | £34 | £259 |
| Underpin A Building near Kingswood | £34 | £257 |
| Underpin A Building near Bristol | £33 | £255 |
| Underpin A Building near Clifton | £33 | £255 |
| Underpin A Building near Keynsham | £33 | £251 |
| Underpin A Building near Portishead | £33 | £247 |
| Underpin A Building near Chippenham | £34 | £258 |
| Underpin A Building near Bath | £32 | £249 |
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 - £17,580

Two storey extension - £88,120

Build a timber frame extension - £26,080

Build a swimming pool - £81,080

Single storey extension - £56,600

Side return extension - £42,400

Install an RSJ - £2,280

Outbuilding - £10,080

Build a Mansard loft conversion - £52,080

Loft conversion - £34,500

Build a kitchen extension - £42,080

Hip to gable loft conversion - £42,080

Granny annexe - £87,080

Garden office - £10,080

Convert a Garage - £16,080

Garage - £18,580

Build a flat roof extension - £22,080

Build a dormer loft conversion - £42,080

Concrete foundations - £6,330

Convert a bungalow loft - £29,080

Convert a basement - £38,400