From £17,628
STONEWALK CONSTRUCTION LTD is an established and experienced local extension builder in Castleton. Please contact us for a free, no obligation quot...
From £17,452
Experienced extension builder ready to quote for your work. ABS Abbott Preservation is the best extension builder in Castleton. No obligation free ...
From £17,356
Firestone Surfacing Ltd is a trusted extension builder serving customers in Castleton and the surrounding area. Contact us to today to get a compet...
From £17,492
Adrian Fowler Property Maintenance & General Building is a trusted extension builder serving customers in Castleton and the surrounding area. Conta...
From £17,684
Experienced extension builder ready to quote for your work. WILD CONSTRUCTION LTD is the best extension builder in Castleton. No obligation free qu...
From £17,196
Need to find an Extension Builder near you for all your extension buildering work?
2 Counties Construction provides a local, trusted extens...
From £17,636
Need to find an Extension Builder near you for all your extension buildering work?
Allen and Woodard Building Contractors Limited provides ...
From £17,580
Relax... you have found a reliable extension builder in Castleton. HILLIER CONSTRUCTION is a friendly and reliable company based in Castleton who c...
From £17,900
Castleton, DT9
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £17,028 (C O JOYCE LIMITED based in BA16) 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 Castleton by posting a job with HaMuch and we will send it to extension builders in Castleton.
| 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 - £17,495

Two storey extension - £87,993

Build a timber frame extension - £25,995

Build a swimming pool - £80,995

Single storey extension - £54,904

Side return extension - £41,446

Install an RSJ - £2,195

Outbuilding - £9,995

Build a Mansard loft conversion - £51,995

Loft conversion - £33,705

Build a kitchen extension - £41,995

Hip to gable loft conversion - £41,995

Granny annexe - £86,995

Garden office - £9,995

Convert a Garage - £15,995

Garage - £18,495

Build a flat roof extension - £21,995

Build a dormer loft conversion - £41,995

Concrete foundations - £6,245

Convert a bungalow loft - £28,995

Convert a basement - £37,446