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 DT9? Morris Concrete Designs has been helping local clients (20 mile radius) with their extension buildering jobs for ...

Underpinning ranges from £17,660 (Morris Concrete Designs based in DT9) to £17,900 (Ed Bartlett Building Contractor based in DT9), 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 DT9 by posting a job with HaMuch and we will send it to extension builders in DT9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Yeovil | £34 | £294 |
| Underpin A Building near South Somerset | £62 | £270 |
| Underpin A Building near Dorchester | £30 | £230 |
| Underpin A Building near Weymouth | £33 | £260 |
| Underpin A Building near Frome | £33 | £263 |
| Underpin A Building near Bridgwater | £30 | £236 |
| Underpin A Building near Taunton | £31 | £242 |
| Underpin A Building near Bath | £32 | £249 |
| Underpin A Building near Poole | £38 | £250 |
| Underpin A Building near Trowbridge | £34 | £266 |
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 - £17,780

Two storey extension - £88,420

Build a timber frame extension - £26,280

Build a swimming pool - £81,280

Single storey extension - £60,600

Side return extension - £44,650

Install an RSJ - £2,480

Outbuilding - £10,280

Build a Mansard loft conversion - £52,280

Loft conversion - £36,375

Build a kitchen extension - £42,280

Hip to gable loft conversion - £42,280

Granny annexe - £87,280

Garden office - £10,280

Convert a Garage - £16,280

Garage - £18,780

Build a flat roof extension - £22,280

Build a dormer loft conversion - £42,280

Concrete foundations - £6,530

Convert a bungalow loft - £29,280

Convert a basement - £40,650