From £16,700
Very reliable honest and hard working guarantee all work clean and tidy first class work
From £17,428
Experienced extension builder ready to quote for your work. DAYS BUILDING SERVICES LTD is the best extension builder in Risca. No obligation free q...
From £17,452
Smith Builders is an established and experienced local extension builder in Risca. Please contact us for a free, no obligation quote and competitiv...
From £17,156
1 solution wales is your local one stop company for all your property requirements
We offer a professional service carried out to ...
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...
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 £17,324
LEE BAILEY BUILDING SERVICES are here to help customers who need an Extension Builder in Risca. We offer a competitive rate to complete all your ex...
From £17,252
Experienced extension builder ready to quote for your work. Kingsley Developments is the best extension builder in Risca. No obligation free quotes...
From £17,420
Kingsley Developments is an established and experienced local extension builder in Risca. Please contact us for a free, no obligation quote and com...
From £17,060
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,700 (A.Gaddarn Builders based in NP11) to £17,452 (Smith Builders based in NP10), 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 Risca by posting a job with HaMuch and we will send it to extension builders in Risca.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Risca | £32 | £218 |
| Underpin A Building near Cwmbran | £43 | £219 |
| Underpin A Building near Newport | £41 | £233 |
| Underpin A Building near Caerphilly | £33 | £208 |
| Underpin A Building near Pontypool | £30 | £210 |
| Underpin A Building near Cardiff | £35 | £219 |
| Underpin A Building near Church Village | £34 | £214 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Ebbw Vale | £28 | £218 |
| Underpin A Building near Tredegar | £28 | £218 |
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 - £17,234

Two storey extension - £87,600

Build a timber frame extension - £25,734

Build a swimming pool - £80,734

Single storey extension - £49,672

Side return extension - £38,503

Install an RSJ - £1,934

Outbuilding - £9,734

Build a Mansard loft conversion - £51,734

Loft conversion - £31,253

Build a kitchen extension - £41,734

Hip to gable loft conversion - £41,734

Granny annexe - £86,734

Garden office - £9,734

Convert a Garage - £15,734

Garage - £18,234

Build a flat roof extension - £21,734

Build a dormer loft conversion - £41,734

Concrete foundations - £5,984

Convert a bungalow loft - £28,734

Convert a basement - £34,503