From £17,164
Searle Construction are here to help customers who need an Extension Builder in St Buryan. We offer a competitive rate to complete all your extens...
From £16,940
We are a family run Construction Company based in Penzance. We employ over 10 skilled local trade professionals with 2 apprentices as well. Residen...
From £16,972
Trusted and professional extension builder in St Buryan. Experienced in all extension buildering work and keeping within budget and on quote. Marks...
From £17,116
D.P.Hatley Building Services is an established extension buildering business in St Buryan. We come highly recommended and provide competitive quote...
From £17,028
Trusted and professional extension builder in St Buryan. Experienced in all extension buildering work and keeping within budget and on quote. D & S...

Underpinning ranges from £16,940 (TGP Construction based in TR18) to £17,164 (Searle Construction based in TR19), 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 St Buryan by posting a job with HaMuch and we will send it to extension builders in St Buryan.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near St Ives, Cornwall | £27 | £188 |
| Underpin A Building near Camborne | £28 | £196 |
| Underpin A Building near Falmouth | £33 | £220 |
| Underpin A Building near Truro | £31 | £206 |
| Underpin A Building near Newquay | £32 | £230 |
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 - £17,044

Two storey extension - £87,316

Build a timber frame extension - £25,544

Build a swimming pool - £80,544

Single storey extension - £45,880

Side return extension - £36,370

Install an RSJ - £1,744

Outbuilding - £9,544

Build a Mansard loft conversion - £51,544

Loft conversion - £29,475

Build a kitchen extension - £41,544

Hip to gable loft conversion - £41,544

Granny annexe - £86,544

Garden office - £9,544

Convert a Garage - £15,544

Garage - £18,044

Build a flat roof extension - £21,544

Build a dormer loft conversion - £41,544

Concrete foundations - £5,794

Convert a bungalow loft - £28,544

Convert a basement - £32,370