From £17,628
STONEWALK CONSTRUCTION LTD is an established and experienced local extension builder in Castle Cary. Please contact us for a free, no obligation qu...
From £17,452
Experienced extension builder ready to quote for your work. ABS Abbott Preservation is the best extension builder in Castle Cary. No obligation fre...
From £17,356
Firestone Surfacing Ltd is a trusted extension builder serving customers in Castle Cary and the surrounding area. Contact us to today to get a comp...
From £17,628
Colin Clarke building:roofing has been successfully in business for 30 years. A vast amount of skills and knowledge has been gained and used to cre...
From £17,268
Trusted and professional extension builder in Castle Cary. Experienced in all extension buildering work and keeping within budget and on quote. Jer...
From £17,476
K STOBBS BUILDING CONTRACTOR is an established extension buildering business in Castle Cary. We come highly recommended and provide competitive quo...
From £17,492
Adrian Fowler Property Maintenance & General Building is a trusted extension builder serving customers in Castle Cary and the surrounding area. Con...
From £17,684
Trusted and professional extension builder in Castle Cary. Experienced in all extension buildering work and keeping within budget and on quote. MIC...
From £17,364
Relax... you have found a reliable extension builder in Castle Cary. Bryan Loveday Services Limited is a friendly and reliable company based in Cas...

Underpinning ranges from £17,028 (C O JOYCE LIMITED based in BA16) to £17,684 (MICHAEL PARKER BUILDING CONTR. based in BS28), 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 Castle Cary by posting a job with HaMuch and we will send it to extension builders in Castle Cary.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near South Somerset | £62 | £270 |
| Underpin A Building near Yeovil | £34 | £294 |
| Underpin A Building near Frome | £33 | £263 |
| Underpin A Building near Bath | £32 | £249 |
| Underpin A Building near Bridgwater | £30 | £236 |
| Underpin A Building near Trowbridge | £34 | £266 |
| Underpin A Building near Keynsham | £33 | £251 |
| Underpin A Building near North Somerset | £32 | £245 |
| Underpin A Building near Bristol | £33 | £255 |
| Underpin A Building near Kingswood | £34 | £257 |
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 - £17,438

Two storey extension - £87,906

Build a timber frame extension - £25,938

Build a swimming pool - £80,938

Single storey extension - £53,752

Side return extension - £40,798

Install an RSJ - £2,138

Outbuilding - £9,938

Build a Mansard loft conversion - £51,938

Loft conversion - £33,165

Build a kitchen extension - £41,938

Hip to gable loft conversion - £41,938

Granny annexe - £86,938

Garden office - £9,938

Convert a Garage - £15,938

Garage - £18,438

Build a flat roof extension - £21,938

Build a dormer loft conversion - £41,938

Concrete foundations - £6,188

Convert a bungalow loft - £28,938

Convert a basement - £36,798