From £17,428
Need to find an Extension Builder near you for all your extension buildering work?
GOODE BUILDING SERVICES provides a local, trusted extens...
From £17,348
Atlantic Building Services Ltd is an established extension buildering business in CF83. We come highly recommended and provide competitive quotes f...
From £17,180
General Building and Property Renovation Specialists A family business since Based in South Wales We specialise in all aspects of residential build...
From £17,116
EXTEND & BUILD LTD is an established and experienced local extension builder in CF83. Please contact us for a free, no obligation quote and competi...
From £17,316
G T Brickwork is an established extension buildering business in CF83. We come highly recommended and provide competitive quotes for your work.
...From £17,388
yourHOME Construction are here to help customers who need an Extension Builder in CF83. We offer a competitive rate to complete all your extension ...
From £17,060
Need an Extension Builder in CF83? Fusion Fitted Furniture has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £17,220
Trusted and professional extension builder in CF83. Experienced in all extension buildering work and keeping within budget and on quote. TLC Buildi...
From £17,132
TGF BUILDING & MAINTENCE is an established and experienced local extension builder in CF83. Please contact us for a free, no obligation quote and c...
From £17,180
Need to find an Extension Builder near you for all your extension buildering work?
ABS Allied Trades provides a local, trusted extension bu...

Underpinning ranges from £17,060 (Fusion Fitted Furniture based in CF14) to £17,428 (GOODE BUILDING SERVICES based in CF83), 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 CF83 by posting a job with HaMuch and we will send it to extension builders in CF83.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Caerphilly | £29 | £181 |
| Underpin A Building near Church Village | £30 | £188 |
| Underpin A Building near Pontypridd | £29 | £184 |
| Underpin A Building near Risca | £27 | £185 |
| Underpin A Building near Cardiff | £30 | £190 |
| Underpin A Building near Rhondda | £27 | £183 |
| Underpin A Building near Cwmbran | £39 | £190 |
| Underpin A Building near Newport | £37 | £200 |
| Underpin A Building near Rhondda, Cynon, Taff | £27 | £183 |
| Underpin A Building near Penarth | £31 | £189 |
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 - £17,237

Two storey extension - £87,605

Build a timber frame extension - £25,737

Build a swimming pool - £80,737

Single storey extension - £49,736

Side return extension - £38,539

Install an RSJ - £1,937

Outbuilding - £9,737

Build a Mansard loft conversion - £51,737

Loft conversion - £31,283

Build a kitchen extension - £41,737

Hip to gable loft conversion - £41,737

Granny annexe - £86,737

Garden office - £9,737

Convert a Garage - £15,737

Garage - £18,237

Build a flat roof extension - £21,737

Build a dormer loft conversion - £41,737

Concrete foundations - £5,987

Convert a bungalow loft - £28,737

Convert a basement - £34,539