From £17,244
Local builder services CENTER "I, YOU, WE" CIC. Exterior building work build or repair a path or driveway construct or restore an ...
From £17,236
The Rod Squad is a trusted extension builder serving customers in SA7 and the surrounding area. Contact us to today to get a competitive quote for ...
From £17,276
KAW Developments is a trusted extension builder serving customers in SA7 and the surrounding area. Contact us to today to get a competitive quote f...
From £17,500
Experienced extension builder ready to quote for your work. Improve Not Move is the best extension builder in SA7. No obligation free quotes and ma...
From £17,132
Karina Lane Construction Ltd are here to help customers who need an Extension Builder in SA7. We offer a competitive rate to complete all your exte...
From £17,076
Homekare Building Services Ltd is an established and experienced local extension builder in SA7. Please contact us for a free, no obligation quote ...
From £17,516
Relax... you have found a reliable extension builder in SA7. Signature Project Solutions Ltd is a friendly and reliable company based in SA7 who co...
From £17,212
Trusted and professional extension builder in SA7. Experienced in all extension buildering work and keeping within budget and on quote. Masterbuild...
From £18,524
Need an Extension Builder in SA7? KD Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...
From £17,060
NTW BUILDING is an established and experienced local extension builder in SA7. Please contact us for a free, no obligation quote and competitive ra...

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 SA7 by posting a job with HaMuch and we will send it to extension builders in SA7.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Swansea | £29 | £230 |
| Underpin A Building near Neath | £30 | £225 |
| Underpin A Building near Port Talbot | £31 | £227 |
| Underpin A Building near Gorseinon | £29 | £228 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Llanelli | £29 | £231 |
| Underpin A Building near Pyle | £34 | £262 |
| Underpin A Building near Porthcawl | £33 | £252 |
| Underpin A Building near Bridgend | £32 | £200 |
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 - £17,378

Two storey extension - £87,816

Build a timber frame extension - £25,878

Build a swimming pool - £80,878

Single storey extension - £52,552

Side return extension - £40,123

Install an RSJ - £2,078

Outbuilding - £9,878

Build a Mansard loft conversion - £51,878

Loft conversion - £32,603

Build a kitchen extension - £41,878

Hip to gable loft conversion - £41,878

Granny annexe - £86,878

Garden office - £9,878

Convert a Garage - £15,878

Garage - £18,378

Build a flat roof extension - £21,878

Build a dormer loft conversion - £41,878

Concrete foundations - £6,128

Convert a bungalow loft - £28,878

Convert a basement - £36,123