From £17,388
HANDLEY BUILDERS is an established and experienced local extension builder in Mitchell. Please contact us for a free, no obligation quote and compe...
From £17,132
Relax... you have found a reliable extension builder in Mitchell. KC DESIGN AND BUILD is a friendly and reliable company based in Mitchell who cons...
From £17,172
A Collins Building Contractor is a trusted extension builder serving customers in Mitchell and the surrounding area. Contact us to today to get a c...
From £17,204
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,204
From start to finish, your project will be undertaken by one of the family, providing the utmost care and quality of workmanship. We’ll work with...
From £17,324
Relax... you have found a reliable extension builder in Mitchell. BUILDMARK BUILDERS is a friendly and reliable company based in Mitchell who consi...
From £17,044
Experienced extension builder ready to quote for your work. KEAST CONSTRUCTION LTD is the best extension builder in Mitchell. No obligation free qu...
From £17,316
Rock Construction is a trusted extension builder serving customers in Mitchell and the surrounding area. Contact us to today to get a competitive q...
From £17,132
J C MITCHELL BUILDERS LTD is a trusted extension builder serving customers in Mitchell and the surrounding area. Contact us to today to get a compe...

Underpinning ranges from £17,044 (KEAST CONSTRUCTION LTD based in TR1) to £17,444 (MYSA based in TR7), 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 Mitchell by posting a job with HaMuch and we will send it to extension builders in Mitchell.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Newquay | £32 | £230 |
| Underpin A Building near Truro | £31 | £206 |
| Underpin A Building near St Austell | £38 | £245 |
| Underpin A Building near Camborne | £28 | £196 |
| Underpin A Building near Falmouth | £33 | £220 |
| Underpin A Building near St Ives, Cornwall | £27 | £188 |
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 - £17,236

Two storey extension - £87,604

Build a timber frame extension - £25,736

Build a swimming pool - £80,736

Single storey extension - £49,720

Side return extension - £38,530

Install an RSJ - £1,936

Outbuilding - £9,736

Build a Mansard loft conversion - £51,736

Loft conversion - £31,275

Build a kitchen extension - £41,736

Hip to gable loft conversion - £41,736

Granny annexe - £86,736

Garden office - £9,736

Convert a Garage - £15,736

Garage - £18,236

Build a flat roof extension - £21,736

Build a dormer loft conversion - £41,736

Concrete foundations - £5,986

Convert a bungalow loft - £28,736

Convert a basement - £34,530