From £17,116
Need to find an Extension Builder near you for all your extension buildering work?
Max Sandford & San provides a local, trusted extension b...
From £17,292
Shane Griffiths & Son Ltd is a trusted extension builder serving customers in Eglwyswrw and the surrounding area. Contact us to today to get a comp...
From £16,796
Hi my name is Deri
I'm a friendly and reliable and have over 20 yes experience in the building trade. And also come from a family backgr...
From £17,236
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £16,820
Relax... you have found a reliable extension builder in Eglwyswrw. D&O Construction Ltd is a friendly and reliable company based in Eglwyswrw who c...
From £16,932
Relax... you have found a reliable extension builder in Eglwyswrw. Norton Construction is a friendly and reliable company based in Eglwyswrw who co...
From £17,436
Need to find an Extension Builder near you for all your extension buildering work?
N Morgans & Son Ltd provides a local, trusted extension ...

Underpinning ranges from £16,796 (DERI BROWN T/A D Brown Building Services based in SA44) to £17,436 (N Morgans & Son Ltd based in SA33), 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 Eglwyswrw by posting a job with HaMuch and we will send it to extension builders in Eglwyswrw.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Carmarthenshire | £26 | £205 |
| Underpin A Building near Carmarthen | £26 | £205 |
| Underpin A Building near Milford Haven | £18 | £159 |
| Underpin A Building near Pembrokeshire | £19 | £163 |
| Underpin A Building near Llanelli | £29 | £231 |
| Underpin A Building near Gorseinon | £29 | £228 |
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 - £17,090

Two storey extension - £87,385

Build a timber frame extension - £25,590

Build a swimming pool - £80,590

Single storey extension - £46,794

Side return extension - £36,884

Install an RSJ - £1,790

Outbuilding - £9,590

Build a Mansard loft conversion - £51,590

Loft conversion - £29,904

Build a kitchen extension - £41,590

Hip to gable loft conversion - £41,590

Granny annexe - £86,590

Garden office - £9,590

Convert a Garage - £15,590

Garage - £18,090

Build a flat roof extension - £21,590

Build a dormer loft conversion - £41,590

Concrete foundations - £5,840

Convert a bungalow loft - £28,590

Convert a basement - £32,884