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S ROBERTS ROOFING are here to help customers who need an Extension Builder in Prestatyn. We offer a competitive rate to complete all your extension...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Robert Wilson
Wood floor services is a trusted extension builder serving customers in Prestatyn and the surrounding area. Contact us to today to get a competiti...
From £16,916
John Foster
Octagon Construction Ltd is a trusted extension builder serving customers in Prestatyn and the surrounding area. Contact us to today to get a compe...
From £16,948
Shaun Davies
We are a company with over 30 years of experience. Who pride ourselves by providing a honest reliable service

Underpinning ranges from £16,916 (Octagon Construction Ltd based in LL18) to £17,372 (Brothers Construction based in LL18), 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 Prestatyn by posting a job with HaMuch and we will send it to extension builders in Prestatyn.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Prestatyn | £29 | £213 |
| Underpin A Building near Rhyl | £28 | £209 |
| Underpin A Building near Colwyn Bay | £28 | £211 |
| Underpin A Building near Heswall | £30 | £213 |
| Underpin A Building near Wirral | £31 | £219 |
| Underpin A Building near Flintshire | £33 | £224 |
| Underpin A Building near Birkenhead | £31 | £219 |
| Underpin A Building near Connah's Quay | £33 | £229 |
| Underpin A Building near Wallasey | £32 | £224 |
| Underpin A Building near Bebington | £31 | £222 |
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 - £17,105

Two storey extension - £87,407

Build a timber frame extension - £25,605

Build a swimming pool - £80,605

Single storey extension - £47,096

Side return extension - £37,054

Install an RSJ - £1,805

Outbuilding - £9,605

Build a Mansard loft conversion - £51,605

Loft conversion - £30,045

Build a kitchen extension - £41,605

Hip to gable loft conversion - £41,605

Granny annexe - £86,605

Garden office - £9,605

Convert a Garage - £15,605

Garage - £18,105

Build a flat roof extension - £21,605

Build a dormer loft conversion - £41,605

Concrete foundations - £5,855

Convert a bungalow loft - £28,605

Convert a basement - £33,054