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 £16,908
Barnstaple, EX32
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £16,996
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...
From £17,148
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
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 £16,868
Steve And Ray Patt Builders & Decorators is an established extension buildering business in Barnstaple. We come highly recommended and provide comp...
From £16,908
We are G White & Son - A fully qualified and highly skilled team of builders in a building company based in Bideford
A friendly and ...
From £17,348
Copps Property Maintenance are here to help customers who need an Extension Builder in Barnstaple. We offer a competitive rate to complete all your...

Underpinning ranges from £16,868 (Steve And Ray Patt Builders & Decorators based in EX39) to £17,348 (Copps Property Maintenance based in EX38), 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 - £17,058

Two storey extension - £87,338

Build a timber frame extension - £25,558

Build a swimming pool - £80,558

Single storey extension - £46,168

Side return extension - £36,532

Install an RSJ - £1,758

Outbuilding - £9,558

Build a Mansard loft conversion - £51,558

Loft conversion - £29,610

Build a kitchen extension - £41,558

Hip to gable loft conversion - £41,558

Granny annexe - £86,558

Garden office - £9,558

Convert a Garage - £15,558

Garage - £18,058

Build a flat roof extension - £21,558

Build a dormer loft conversion - £41,558

Concrete foundations - £5,808

Convert a bungalow loft - £28,558

Convert a basement - £32,532