From £17,404
REDRUTH, TR15
At peninsula refurbishment we provide a service from start to finish with minimal hassle for the customer. The workmanship is always high priority,...
From £17,028
Redruth, TR15
Trusted and professional extension builder in Redruth. Experienced in all extension buildering work and keeping within budget and on quote. D & S B...
From £17,116
D.P.Hatley Building Services is an established extension buildering business in Redruth. We come highly recommended and provide competitive quotes ...
From £17,284
Need to find an Extension Builder near you for all your extension buildering work?
KPK Builders Ltd provides a local, trusted extension bui...
From £17,292
Need to find an Extension Builder near you for all your extension buildering work?
Samuel Winn Design & Build provides a local, trusted ext...
From £17,244
Trusted and professional extension builder in Redruth. Experienced in all extension buildering work and keeping within budget and on quote. Jo Trac...
From £16,972
Trusted and professional extension builder in Redruth. Experienced in all extension buildering work and keeping within budget and on quote. Marks m...
From £17,252
Jackson Developments provides an affordable, quality service for customers across Cornwall.We undertake all aspects of building work and can manage...
From £17,132
J C MITCHELL BUILDERS LTD is a trusted extension builder serving customers in Redruth and the surrounding area. Contact us to today to get a compet...
From £17,044
Experienced extension builder ready to quote for your work. KEAST CONSTRUCTION LTD is the best extension builder in Redruth. No obligation free quo...

Underpinning ranges from £16,972 (Marks maintenance based in TR14) to £17,404 (Peninsula Property Refurbishments based in TR15), 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 Redruth by posting a job with HaMuch and we will send it to extension builders in Redruth.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Camborne | £28 | £196 |
| Underpin A Building near Truro | £31 | £206 |
| Underpin A Building near Falmouth | £33 | £220 |
| Underpin A Building near St Ives, Cornwall | £27 | £188 |
| Underpin A Building near Newquay | £32 | £230 |
| Underpin A Building near St Austell | £38 | £245 |
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 - £17,177

Two storey extension - £87,515

Build a timber frame extension - £25,677

Build a swimming pool - £80,677

Single storey extension - £48,536

Side return extension - £37,864

Install an RSJ - £1,877

Outbuilding - £9,677

Build a Mansard loft conversion - £51,677

Loft conversion - £30,720

Build a kitchen extension - £41,677

Hip to gable loft conversion - £41,677

Granny annexe - £86,677

Garden office - £9,677

Convert a Garage - £15,677

Garage - £18,177

Build a flat roof extension - £21,677

Build a dormer loft conversion - £41,677

Concrete foundations - £5,927

Convert a bungalow loft - £28,677

Convert a basement - £33,864