From £17,308
Dare Fitness is an established extension buildering business in CF48. We come highly recommended and provide competitive quotes for your work.
...From £17,324
Need an Extension Builder in CF48? FORMWORK CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £17,396
Barlam Drylining Ltd are here to help customers who need an Extension Builder in CF48. We offer a competitive rate to complete all your extension b...
From £17,028
Need an Extension Builder in CF48? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £17,204
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,076
L E JONES BUILDER is an established extension buildering business in CF48. We come highly recommended and provide competitive quotes for your work....
From £17,348
Relax... you have found a reliable extension builder in CF48. Professional Concrete Solutions is a friendly and reliable company based in CF48 who ...
From £17,300
Need an Extension Builder in CF48? MG3Design has been helping local clients (20 mile radius) with their extension buildering jobs for many years. G...
From £17,116
CHANDER CONSTRUCTION LIMITED is an established and experienced local extension builder in CF48. Please contact us for a free, no obligation quote a...
From £16,996
Trusted and professional extension builder in CF48. Experienced in all extension buildering work and keeping within budget and on quote. RJ CONSTRU...

Underpinning ranges from £16,996 (RJ CONSTRUCTION based in CF40) to £17,396 (Barlam Drylining Ltd based in CF45), 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 CF48 by posting a job with HaMuch and we will send it to extension builders in CF48.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Merthyr Tydfil | £33 | £220 |
| Underpin A Building near Aberdare | £32 | £212 |
| Underpin A Building near Tredegar | £30 | £217 |
| Underpin A Building near Rhondda, Cynon, Taff | £31 | £209 |
| Underpin A Building near Ebbw Vale | £30 | £217 |
| Underpin A Building near Rhondda | £31 | £206 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Church Village | £34 | £214 |
| Underpin A Building near Caerphilly | £33 | £208 |
| 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 - £17,210

Two storey extension - £87,564

Build a timber frame extension - £25,710

Build a swimming pool - £80,710

Single storey extension - £49,192

Side return extension - £38,233

Install an RSJ - £1,910

Outbuilding - £9,710

Build a Mansard loft conversion - £51,710

Loft conversion - £31,028

Build a kitchen extension - £41,710

Hip to gable loft conversion - £41,710

Granny annexe - £86,710

Garden office - £9,710

Convert a Garage - £15,710

Garage - £18,210

Build a flat roof extension - £21,710

Build a dormer loft conversion - £41,710

Concrete foundations - £5,960

Convert a bungalow loft - £28,710

Convert a basement - £34,233