From £17,588
Relax... you have found a reliable extension builder in Castle Caereinion. OPH Joinery is a friendly and reliable company based in Castle Caereinio...
From £17,084
Trusted and professional extension builder in Castle Caereinion. Experienced in all extension buildering work and keeping within budget and on quot...
From £16,860
John Sillitoe Building Contractor is a trusted extension builder serving customers in Castle Caereinion and the surrounding area. Contact us to tod...
From £17,356
Trusted and professional extension builder in Castle Caereinion. Experienced in all extension buildering work and keeping within budget and on quot...
From £17,012
Relax... you have found a reliable extension builder in Castle Caereinion. EVABUILD LIMITED is a friendly and reliable company based in Castle Caer...
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 £17,220
In the trade since left school(1990),accommodating and reliable,
From £17,340
Relax... you have found a reliable extension builder in Castle Caereinion. Your Home Made Ltd is a friendly and reliable company based in Castle Ca...
From £17,428
Need to find an Extension Builder near you for all your extension buildering work?
Fistral ltd provides a local, trusted extension builderi...

Underpinning ranges from £16,860 (John Sillitoe Building Contractor based in SY16) to £17,588 (OPH Joinery based in SY1), 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 Castle Caereinion by posting a job with HaMuch and we will send it to extension builders in Castle Caereinion.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Shrewsbury | £32 | £249 |
| Underpin A Building near The Wrekin | £30 | £236 |
| Underpin A Building near Wrexham Maelor | £34 | £261 |
| Underpin A Building near Wrexham | £34 | £263 |
| Underpin A Building near Telford | £30 | £241 |
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 - £17,212

Two storey extension - £87,568

Build a timber frame extension - £25,712

Build a swimming pool - £80,712

Single storey extension - £49,240

Side return extension - £38,260

Install an RSJ - £1,912

Outbuilding - £9,712

Build a Mansard loft conversion - £51,712

Loft conversion - £31,050

Build a kitchen extension - £41,712

Hip to gable loft conversion - £41,712

Granny annexe - £86,712

Garden office - £9,712

Convert a Garage - £15,712

Garage - £18,212

Build a flat roof extension - £21,712

Build a dormer loft conversion - £41,712

Concrete foundations - £5,962

Convert a bungalow loft - £28,712

Convert a basement - £34,260