From £17,500
Reliable family run business established in 2003. All work previously undertaken has been generated purely through word of mouth and recommendation...
From £17,452
The House Mechanic are here to help customers who need an Extension Builder in Devon. We offer a competitive rate to complete all your extension bu...
From £17,276
Relax... you have found a reliable extension builder in Devon. R BREWER CONSTRUCTION LTD is a friendly and reliable company based in Devon who cons...
From £17,012
Relax... you have found a reliable extension builder in Devon. KARLINE CONSTRUCTION LTD is a friendly and reliable company based in Devon who consi...
From £17,172
Devon, EX2
Trusted and professional extension builder in Devon. Experienced in all extension buildering work and keeping within budget and on quote. C P Conve...
From £17,476
Blake Services is a trusted extension builder serving customers in Devon and the surrounding area. Contact us to today to get a competitive quote f...
From £17,324
Devon, EX5
Livewest is a trusted extension builder serving customers in Devon and the surrounding area. Contact us to today to get a competitive quote for ext...
From £17,420
Devon, EX5
Need an Extension Builder in Devon? Sales Consultant - LiveWest has been helping local clients (20 mile radius) with their extension buildering job...
From £17,220
PEK BUILD are here to help customers who need an Extension Builder in Devon. We offer a competitive rate to complete all your extension buildering ...
From £17,132
F8 CONSTRUCTION LIMITED is an established extension buildering business in Devon. We come highly recommended and provide competitive quotes for you...

Underpinning ranges from £17,012 (KARLINE CONSTRUCTION LTD based in EX2) to £17,500 (WEBB & SONS (SW) LTD based in EX1), 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 Devon by posting a job with HaMuch and we will send it to extension builders in Devon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Exeter | £27 | £221 |
| Underpin A Building near Exmouth | £24 | £210 |
| Underpin A Building near East Devon | £27 | £221 |
| Underpin A Building near Teignbridge | £27 | £260 |
| Underpin A Building near Tiverton | £25 | £202 |
| Underpin A Building near Newton Abbot | £27 | £236 |
| Underpin A Building near Torquay | £28 | £223 |
| Underpin A Building near Paignton | £27 | £222 |
| Underpin A Building near Torbay | £27 | £223 |
| Underpin A Building near Taunton | £31 | £242 |
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 - £17,298

Two storey extension - £87,698

Build a timber frame extension - £25,798

Build a swimming pool - £80,798

Single storey extension - £50,968

Side return extension - £39,232

Install an RSJ - £1,998

Outbuilding - £9,798

Build a Mansard loft conversion - £51,798

Loft conversion - £31,860

Build a kitchen extension - £41,798

Hip to gable loft conversion - £41,798

Granny annexe - £86,798

Garden office - £9,798

Convert a Garage - £15,798

Garage - £18,298

Build a flat roof extension - £21,798

Build a dormer loft conversion - £41,798

Concrete foundations - £6,048

Convert a bungalow loft - £28,798

Convert a basement - £35,232