Need an Extension Builder in SA15? KD Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
NTW BUILDING is an established and experienced local extension builder in SA15. Please contact us for a free, no obligation quote and competitive r...
Relax... you have found a reliable extension builder in SA15. R M R BUILDING CONTRACTORS is a friendly and reliable company based in SA15 who consi...
Llanelli Damp Proofing is an established and experienced local extension builder in SA15. Please contact us for a free, no obligation quote and com...
Relax... you have found a reliable extension builder in SA15. Home Maintenance & Improvement is a friendly and reliable company based in SA15 who c...
Colin Cole - Total Renovations is an established and experienced local extension builder in SA15. Please contact us for a free, no obligation quote...
From £17,356
RTC BUILDERS is a trusted extension builder serving customers in SA15 and the surrounding area. Contact us to today to get a competitive quote for ...
From £17,132
Need an Extension Builder in SA15? Haven Commercial Contractors Ltd has been helping local clients (20 mile radius) with their extension buildering...
From £17,100
Experienced extension builder ready to quote for your work. HAYDN LEWIS BUILDING SVS LTD is the best extension builder in SA15. No obligation free ...

Underpinning ranges from £17,060 (NTW BUILDING based in SA15) to £18,524 (KD Construction based in SA15), 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 SA15 by posting a job with HaMuch and we will send it to extension builders in SA15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Llanelli | £29 | £231 |
| Underpin A Building near Gorseinon | £29 | £228 |
| Underpin A Building near Swansea | £29 | £229 |
| Underpin A Building near Carmarthen | £26 | £205 |
| Underpin A Building near Carmarthenshire | £26 | £205 |
| Underpin A Building near Neath | £30 | £225 |
| Underpin A Building near Port Talbot | £31 | £227 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Pyle | £34 | £262 |
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 - £17,383

Two storey extension - £87,824

Build a timber frame extension - £25,883

Build a swimming pool - £80,883

Single storey extension - £52,653

Side return extension - £40,180

Install an RSJ - £2,083

Outbuilding - £9,883

Build a Mansard loft conversion - £51,883

Loft conversion - £32,650

Build a kitchen extension - £41,883

Hip to gable loft conversion - £41,883

Granny annexe - £86,883

Garden office - £9,883

Convert a Garage - £15,883

Garage - £18,383

Build a flat roof extension - £21,883

Build a dormer loft conversion - £41,883

Concrete foundations - £6,133

Convert a bungalow loft - £28,883

Convert a basement - £36,180