From £16,956
S ROBERTS ROOFING are here to help customers who need an Extension Builder in LL22. We offer a competitive rate to complete all your extension buil...
From £16,916
Octagon Construction Ltd is a trusted extension builder serving customers in LL22 and the surrounding area. Contact us to today to get a competitiv...
From £17,332
Wood floor services is a trusted extension builder serving customers in LL22 and the surrounding area. Contact us to today to get a competitive qu...
From £17,372
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,076
Relax... you have found a reliable extension builder in LL22. UK Leisure Living Ltd is a friendly and reliable company based in LL22 who consider n...
From £17,300
Need an Extension Builder in LL22? Chris's Roofing & Property Maintenance has been helping local clients (20 mile radius) with their extension buil...
From £16,948
We are a company with over 30 years of experience. Who pride ourselves by providing a honest reliable service
From £17,396
Relax... you have found a reliable extension builder in LL22. L & J BUILDERS is a friendly and reliable company based in LL22 who consider no job a...
From £17,284
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,916 (Octagon Construction Ltd based in LL18) to £17,396 (L & J BUILDERS based in LL15), 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 LL22 by posting a job with HaMuch and we will send it to extension builders in LL22.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Colwyn Bay | £28 | £211 |
| Underpin A Building near Rhyl | £28 | £209 |
| Underpin A Building near Prestatyn | £29 | £213 |
| Underpin A Building near Llandudno | £28 | £211 |
| Underpin A Building near Conway | £28 | £211 |
| Underpin A Building near Conwy | £28 | £211 |
| Underpin A Building near Flintshire | £32 | £224 |
| Underpin A Building near Heswall | £30 | £213 |
| Underpin A Building near Connah's Quay | £33 | £229 |
| Underpin A Building near Wirral | £31 | £219 |
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 - £17,176

Two storey extension - £87,513

Build a timber frame extension - £25,676

Build a swimming pool - £80,676

Single storey extension - £48,511

Side return extension - £37,850

Install an RSJ - £1,876

Outbuilding - £9,676

Build a Mansard loft conversion - £51,676

Loft conversion - £30,708

Build a kitchen extension - £41,676

Hip to gable loft conversion - £41,676

Granny annexe - £86,676

Garden office - £9,676

Convert a Garage - £15,676

Garage - £18,176

Build a flat roof extension - £21,676

Build a dormer loft conversion - £41,676

Concrete foundations - £5,926

Convert a bungalow loft - £28,676

Convert a basement - £33,850