From £16,908
Barnstaple, EX32
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £16,868
Steve Patt
Steve And Ray Patt Builders & Decorators is an established extension buildering business in Barnstaple. We come highly recommended and provide comp...
From £17,028
Experienced extension builder ready to quote for your work. T.P Woods is the best extension builder in Barnstaple. No obligation free quotes and ma...
From £17,148
Barnstaple, EX31
Experienced extension builder ready to quote for your work. Taylor Made Projects is the best extension builder in Barnstaple. No obligation free qu...
From £17,028
Need an Extension Builder in Barnstaple? Chloe Property Design has been helping local clients (20 mile radius) with their extension buildering jobs...
From £16,996
Honka UK Ltd is a trusted extension builder serving customers in Barnstaple and the surrounding area. Contact us to today to get a competitive quot...
From £17,188
Barnstaple, EX31
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Gary White
We are G White & Son - A fully qualified and highly skilled team of builders in a building company based in Bideford
A friendly and ...
"Has an outstanding balance of £1000 for an excavator hire. Seems to think he doesn't need to pay!! Its been 4 months and still no payment!!" - BARNSTAPLE,reviewed 22/11/18, ADAM RIVA

Underpinning ranges from £16,868 (Steve And Ray Patt Builders & Decorators based in EX39) to £17,188 (IDEAL CONSTRUCTION based in EX31), 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 Barnstaple by posting a job with HaMuch and we will send it to extension builders in Barnstaple.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Barnstaple | £25 | £196 |
| Underpin A Building near Bideford | £22 | £174 |
| Underpin A Building near Tiverton | £25 | £202 |
| Underpin A Building near Porthcawl | £33 | £252 |
| Underpin A Building near Vale of Glamorgan | £29 | £217 |
| Underpin A Building near Exeter | £27 | £221 |
| Underpin A Building near Bridgend | £32 | £200 |
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 - £17,026

Two storey extension - £87,289

Build a timber frame extension - £25,526

Build a swimming pool - £80,526

Single storey extension - £45,524

Side return extension - £36,170

Install an RSJ - £1,726

Outbuilding - £9,526

Build a Mansard loft conversion - £51,526

Loft conversion - £29,308

Build a kitchen extension - £41,526

Hip to gable loft conversion - £41,526

Granny annexe - £86,526

Garden office - £9,526

Convert a Garage - £15,526

Garage - £18,026

Build a flat roof extension - £21,526

Build a dormer loft conversion - £41,526

Concrete foundations - £5,776

Convert a bungalow loft - £28,526

Convert a basement - £32,170