From £17,516
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,548
Experienced extension builder ready to quote for your work. Guest & Roberts is the best extension builder in Corwen. No obligation free quotes and ...
From £17,396
Relax... you have found a reliable extension builder in Corwen. L & J BUILDERS is a friendly and reliable company based in Corwen who consider no j...
From £18,084
Relax... you have found a reliable extension builder in Corwen. David Williams General Builder & Maintenance is a friendly and reliable company bas...
From £17,572
DMS Building Services are here to help customers who need an Extension Builder in Corwen. We offer a competitive rate to complete all your extensio...
From £17,220
In the trade since left school(1990),accommodating and reliable,
From £17,516
Experienced extension builder ready to quote for your work. READ CONSTRUCTION HOLDINGS LTD is the best extension builder in Corwen. No obligation f...
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...
From £17,340
Relax... you have found a reliable extension builder in Corwen. Your Home Made Ltd is a friendly and reliable company based in Corwen who consider ...
From £16,948
We are a company with over 30 years of experience. Who pride ourselves by providing a honest reliable service

Underpinning ranges from £16,948 (S A Davies Sustainable Construction Limited based in CH7) to £18,084 (David Williams General Builder & Maintenance based in LL11), 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 Corwen by posting a job with HaMuch and we will send it to extension builders in Corwen.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Wrexham | £34 | £263 |
| Underpin A Building near Flintshire | £33 | £224 |
| Underpin A Building near Wrexham Maelor | £34 | £261 |
| Underpin A Building near Vale Royal | £35 | £251 |
| Underpin A Building near Hawarden | £33 | £228 |
| Underpin A Building near Connah's Quay | £33 | £229 |
| Underpin A Building near Rhyl | £28 | £209 |
| Underpin A Building near Prestatyn | £29 | £213 |
| Underpin A Building near Colwyn Bay | £28 | £211 |
| Underpin A Building near Chester | £32 | £220 |
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 - £17,457

Two storey extension - £87,935

Build a timber frame extension - £25,957

Build a swimming pool - £80,957

Single storey extension - £54,136

Side return extension - £41,014

Install an RSJ - £2,157

Outbuilding - £9,957

Build a Mansard loft conversion - £51,957

Loft conversion - £33,345

Build a kitchen extension - £41,957

Hip to gable loft conversion - £41,957

Granny annexe - £86,957

Garden office - £9,957

Convert a Garage - £15,957

Garage - £18,457

Build a flat roof extension - £21,957

Build a dormer loft conversion - £41,957

Concrete foundations - £6,207

Convert a bungalow loft - £28,957

Convert a basement - £37,014