From £17,860
We are a medium sized Buisness with a huge reputation for quality workmanship
From £17,540
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,364
Obsession design and build is a full building services company with an in house team combining extensive experienceand exquisite aspirations. Our t...
From £17,660
Experienced extension builder ready to quote for your work. LEES BUILDING CONTRACTORS LTD is the best extension builder in Banwell. No obligation f...
From £17,500
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,436
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,284
MICHAEL PANG BUILDING SERVICES is an established and experienced local extension builder in Banwell. Please contact us for a free, no obligation qu...
From £17,188
PORTCLIFF BUILDING SERV LTD is an established extension buildering business in Banwell. We come highly recommended and provide competitive quotes f...
From £17,716
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,268
Trusted and professional extension builder in Banwell. Experienced in all extension buildering work and keeping within budget and on quote. Jeremy ...

Underpinning ranges from £17,188 (PORTCLIFF BUILDING SERV LTD based in BS21) to £17,860 (A K BISHOP based in BS24), 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 Banwell by posting a job with HaMuch and we will send it to extension builders in Banwell.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Weston-super-Mare | £33 | £253 |
| Underpin A Building near North Somerset | £32 | £245 |
| Underpin A Building near Clevedon | £32 | £243 |
| Underpin A Building near Portishead | £33 | £247 |
| Underpin A Building near Clifton | £33 | £255 |
| Underpin A Building near Bristol | £33 | £255 |
| Underpin A Building near Penarth | £36 | £217 |
| Underpin A Building near Bridgwater | £30 | £236 |
| Underpin A Building near Cardiff | £35 | £219 |
| 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 - £17,482

Two storey extension - £87,972

Build a timber frame extension - £25,982

Build a swimming pool - £80,982

Single storey extension - £54,632

Side return extension - £41,293

Install an RSJ - £2,182

Outbuilding - £9,982

Build a Mansard loft conversion - £51,982

Loft conversion - £33,578

Build a kitchen extension - £41,982

Hip to gable loft conversion - £41,982

Granny annexe - £86,982

Garden office - £9,982

Convert a Garage - £15,982

Garage - £18,482

Build a flat roof extension - £21,982

Build a dormer loft conversion - £41,982

Concrete foundations - £6,232

Convert a bungalow loft - £28,982

Convert a basement - £37,293