From £17,020
Need to find an Extension Builder near you for all your extension buildering work?
SDW CONSTRUCTION LTD provides a local, trusted extension...
From £16,860
John Sillitoe Building Contractor is a trusted extension builder serving customers in Powys and the surrounding area. Contact us to today to get a ...
From £17,012
Relax... you have found a reliable extension builder in Powys. EVABUILD LIMITED is a friendly and reliable company based in Powys who consider no j...
From £17,220
In the trade since left school(1990),accommodating and reliable,
From £17,084
Trusted and professional extension builder in Powys. Experienced in all extension buildering work and keeping within budget and on quote. Richard S...
From £17,356
Trusted and professional extension builder in Powys. Experienced in all extension buildering work and keeping within budget and on quote. J S CONST...
From £17,340
Relax... you have found a reliable extension builder in Powys. Your Home Made Ltd is a friendly and reliable company based in Powys who consider no...

Underpinning ranges from £16,860 (John Sillitoe Building Contractor based in SY16) to £17,356 (J S CONSTRUCTION based in SY10), 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 Powys by posting a job with HaMuch and we will send it to extension builders in Powys.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Shrewsbury | £32 | £249 |
| Underpin A Building near Wrexham Maelor | £34 | £261 |
| Underpin A Building near Wrexham | £34 | £263 |
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 - £17,127

Two storey extension - £87,441

Build a timber frame extension - £25,627

Build a swimming pool - £80,627

Single storey extension - £47,549

Side return extension - £37,309

Install an RSJ - £1,827

Outbuilding - £9,627

Build a Mansard loft conversion - £51,627

Loft conversion - £30,257

Build a kitchen extension - £41,627

Hip to gable loft conversion - £41,627

Granny annexe - £86,627

Garden office - £9,627

Convert a Garage - £15,627

Garage - £18,127

Build a flat roof extension - £21,627

Build a dormer loft conversion - £41,627

Concrete foundations - £5,877

Convert a bungalow loft - £28,627

Convert a basement - £33,309