From £17,324
Cwmbran, NP44
LEE BAILEY BUILDING SERVICES are here to help customers who need an Extension Builder in Cwmbran. We offer a competitive rate to complete all your ...
From £17,364
, NP44
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,060
Cwmbran, NP44
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,484
Cwmbran, NP44
Need to find an Extension Builder near you for all your extension buildering work?
PARTRIDGE - WILSON BUILDERS provides a local, trusted ex...
From £17,068
D BENDON CONSTRUCTION LTD is an established and experienced local extension builder in Cwmbran. Please contact us for a free, no obligation quote a...
From £17,428
Experienced extension builder ready to quote for your work. DAYS BUILDING SERVICES LTD is the best extension builder in Cwmbran. No obligation free...
From £16,700
Very reliable honest and hard working guarantee all work clean and tidy first class work
From £17,268
Our building services company JSP Carpentry & Building Services has 15 years of experience in the industry. Since then, we have been helping custom...
From £17,500
Trusted and professional extension builder in Cwmbran. Experienced in all extension buildering work and keeping within budget and on quote. A P FOR...
From £17,556
Matthew O'Brien is an established and experienced local extension builder in Cwmbran. Please contact us for a free, no obligation quote and competi...

Underpinning ranges from £16,700 (A.Gaddarn Builders based in NP11) to £17,556 (Matthew O'Brien based in NP19), 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 Cwmbran by posting a job with HaMuch and we will send it to extension builders in Cwmbran.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Cwmbran | £43 | £219 |
| Underpin A Building near Risca | £32 | £218 |
| Underpin A Building near Newport | £41 | £233 |
| Underpin A Building near Pontypool | £30 | £210 |
| Underpin A Building near Caerphilly | £33 | £208 |
| Underpin A Building near Ebbw Vale | £30 | £217 |
| Underpin A Building near Tredegar | £30 | £217 |
| Underpin A Building near Cardiff | £34 | £219 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Church Village | £34 | £214 |
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 - £17,275

Two storey extension - £87,663

Build a timber frame extension - £25,775

Build a swimming pool - £80,775

Single storey extension - £50,504

Side return extension - £38,971

Install an RSJ - £1,975

Outbuilding - £9,775

Build a Mansard loft conversion - £51,775

Loft conversion - £31,643

Build a kitchen extension - £41,775

Hip to gable loft conversion - £41,775

Granny annexe - £86,775

Garden office - £9,775

Convert a Garage - £15,775

Garage - £18,275

Build a flat roof extension - £21,775

Build a dormer loft conversion - £41,775

Concrete foundations - £6,025

Convert a bungalow loft - £28,775

Convert a basement - £34,971