From £17,116
D.P.Hatley Building Services is an established extension buildering business in TR14. We come highly recommended and provide competitive quotes for...
From £16,972
Trusted and professional extension builder in TR14. Experienced in all extension buildering work and keeping within budget and on quote. Marks main...
From £17,028
Trusted and professional extension builder in TR14. Experienced in all extension buildering work and keeping within budget and on quote. D & S Buil...
From £17,404
At peninsula refurbishment we provide a service from start to finish with minimal hassle for the customer. The workmanship is always high priority,...
From £17,284
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 TR14. Experienced in all extension buildering work and keeping within budget and on quote. Jo Tracey ...
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 £17,396
Need an Extension Builder in TR14? Cloverfield Construction Ltd has been helping local clients (20 mile radius) with their extension buildering job...
From £17,132
J C MITCHELL BUILDERS LTD is a trusted extension builder serving customers in TR14 and the surrounding area. Contact us to today to get a competiti...

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 TR14 by posting a job with HaMuch and we will send it to extension builders in TR14.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Camborne | £25 | £177 |
| Underpin A Building near St Ives, Cornwall | £25 | £174 |
| Underpin A Building near Falmouth | £27 | £183 |
| Underpin A Building near Truro | £27 | £182 |
| Underpin A Building near Newquay | £27 | £193 |
| Underpin A Building near St Austell | £32 | £206 |
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