From £17,372
Chepstow, NP16
New Haven Construction Group Ltd is an established extension buildering business in Chepstow. We come highly recommended and provide competitive qu...
From £17,300
Chepstow, NP16
Need to find an Extension Builder near you for all your extension buildering work?
R & G Taylor Builders provides a local, trusted extensio...
From £17,364
Need an Extension Builder in Chepstow? Milliner Construction has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £17,380
Relax... you have found a reliable extension builder in Chepstow. A M I Construction is a friendly and reliable company based in Chepstow who consi...
From £17,196
GOLDCLIFF CONSTRUCTION LTD are here to help customers who need an Extension Builder in Chepstow. We offer a competitive rate to complete all your e...
From £17,316
Eric J Ivins is a trusted extension builder serving customers in Chepstow and the surrounding area. Contact us to today to get a competitive quote ...
From £17,412
Experienced extension builder ready to quote for your work. G & J BUILDING MAINTENANCE is the best extension builder in Chepstow. No obligation fre...
From £17,532
Trusted and professional extension builder in Chepstow. Experienced in all extension buildering work and keeping within budget and on quote. M A Ch...
From £17,564
Dybowski Building Services are here to help customers who need an Extension Builder in Chepstow. We offer a competitive rate to complete all your e...
From £17,668
Need an Extension Builder in Chepstow? Alistair McKenzie has been helping local clients (20 mile radius) with their extension buildering jobs for m...

Underpinning ranges from £17,196 (GOLDCLIFF CONSTRUCTION LTD based in NP26) to £17,668 (Alistair McKenzie based in BS32), 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 Chepstow by posting a job with HaMuch and we will send it to extension builders in Chepstow.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Bradley Stoke | £34 | £259 |
| Underpin A Building near Portishead | £33 | £247 |
| Underpin A Building near South Gloucestershire | £34 | £260 |
| Underpin A Building near Clifton | £33 | £255 |
| Underpin A Building near Yate | £34 | £263 |
| Underpin A Building near Newport | £41 | £233 |
| Underpin A Building near Bristol | £33 | £255 |
| Underpin A Building near Cwmbran | £43 | £219 |
| Underpin A Building near Kingswood | £34 | £257 |
| Underpin A Building near Pontypool | £30 | £210 |
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 - £17,410

Two storey extension - £87,866

Build a timber frame extension - £25,910

Build a swimming pool - £80,910

Single storey extension - £53,208

Side return extension - £40,492

Install an RSJ - £2,110

Outbuilding - £9,910

Build a Mansard loft conversion - £51,910

Loft conversion - £32,910

Build a kitchen extension - £41,910

Hip to gable loft conversion - £41,910

Granny annexe - £86,910

Garden office - £9,910

Convert a Garage - £15,910

Garage - £18,410

Build a flat roof extension - £21,910

Build a dormer loft conversion - £41,910

Concrete foundations - £6,160

Convert a bungalow loft - £28,910

Convert a basement - £36,492