From £17,356
Firestone Surfacing Ltd is a trusted extension builder serving customers in BA21 and the surrounding area. Contact us to today to get a competitive...
From £18,596
Need to find an Extension Builder near you for all your extension buildering work?
Neil Massey Roofing Contractor provides a local, trusted...
From £17,572
Our building services company MDP Building Contractors has over 30 years of experience of helping customers in Yeovil and the surrounding area by p...
From £17,900
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,660
Need an Extension Builder in BA21? Morris Concrete Designs has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £17,996
Experienced extension builder ready to quote for your work. Tim Stradling is the best extension builder in BA21. No obligation free quotes and many...
From £17,628
STONEWALK CONSTRUCTION LTD is an established and experienced local extension builder in BA21. Please contact us for a free, no obligation quote and...
From £17,324
Tor garage doors are a local family run buisness, We offer servicing,repairs,installations and sales using a number of british manufacturers. we ca...
From £17,452
Experienced extension builder ready to quote for your work. ABS Abbott Preservation is the best extension builder in BA21. No obligation free quote...

Underpinning ranges from £17,028 (C O JOYCE LIMITED based in BA16) to £18,596 (Neil Massey Roofing Contractor based in BA21), 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 BA21 by posting a job with HaMuch and we will send it to extension builders in BA21.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Yeovil | £28 | £242 |
| Underpin A Building near South Somerset | £48 | £208 |
| Underpin A Building near Dorchester | £26 | £201 |
| Underpin A Building near Bridgwater | £27 | £212 |
| Underpin A Building near Taunton | £27 | £208 |
| Underpin A Building near Weymouth | £28 | £221 |
| Underpin A Building near Frome | £28 | £220 |
| Underpin A Building near Bath | £28 | £221 |
| Underpin A Building near East Devon | £23 | £193 |
| Underpin A Building near Weston-super-Mare | £29 | £216 |
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 - £17,651

Two storey extension - £88,227

Build a timber frame extension - £26,151

Build a swimming pool - £81,151

Single storey extension - £58,024

Side return extension - £43,201

Install an RSJ - £2,351

Outbuilding - £10,151

Build a Mansard loft conversion - £52,151

Loft conversion - £35,168

Build a kitchen extension - £42,151

Hip to gable loft conversion - £42,151

Granny annexe - £87,151

Garden office - £10,151

Convert a Garage - £16,151

Garage - £18,651

Build a flat roof extension - £22,151

Build a dormer loft conversion - £42,151

Concrete foundations - £6,401

Convert a bungalow loft - £29,151

Convert a basement - £39,201