From £18,044
GARY G BOND LIMITED are here to help customers who need an Extension Builder in Caldicot. We offer a competitive rate to complete all your extensio...
From £17,420
Relax... you have found a reliable extension builder in Caldicot. RD Pope Construction is a friendly and reliable company based in Caldicot who con...
From £17,356
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,268
Trusted and professional extension builder in Caldicot. Experienced in all extension buildering work and keeping within budget and on quote. Jeremy...
From £17,228
Neil Causon & Son is an established and experienced local extension builder in Caldicot. Please contact us for a free, no obligation quote and comp...
From £17,708
FEATHERBED CONSTRUCTION is a trusted extension builder serving customers in Caldicot and the surrounding area. Contact us to today to get a competi...
From £17,116
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Caldicot. No obligation free q...
From £17,284
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in Caldicot. No obligation free quotes and many...
From £17,540
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,340
MOORLAND DESIGN & BUILD LTD are here to help customers who need an Extension Builder in Caldicot. We offer a competitive rate to complete all your ...

Underpinning ranges from £17,116 (JA Building Maintenance based in CF11) to £18,044 (GARY G BOND LIMITED based in BS16), 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 Caldicot by posting a job with HaMuch and we will send it to extension builders in Caldicot.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Portishead | £33 | £247 |
| Underpin A Building near Newport | £41 | £233 |
| Underpin A Building near Bradley Stoke | £34 | £259 |
| Underpin A Building near Clevedon | £32 | £243 |
| Underpin A Building near Clifton | £33 | £255 |
| Underpin A Building near Cwmbran | £43 | £219 |
| Underpin A Building near Bristol | £33 | £255 |
| Underpin A Building near South Gloucestershire | £34 | £260 |
| Underpin A Building near North Somerset | £32 | £245 |
| Underpin A Building near Risca | £32 | £218 |
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 - £17,430

Two storey extension - £87,896

Build a timber frame extension - £25,930

Build a swimming pool - £80,930

Single storey extension - £53,608

Side return extension - £40,717

Install an RSJ - £2,130

Outbuilding - £9,930

Build a Mansard loft conversion - £51,930

Loft conversion - £33,098

Build a kitchen extension - £41,930

Hip to gable loft conversion - £41,930

Granny annexe - £86,930

Garden office - £9,930

Convert a Garage - £15,930

Garage - £18,430

Build a flat roof extension - £21,930

Build a dormer loft conversion - £41,930

Concrete foundations - £6,180

Convert a bungalow loft - £28,930

Convert a basement - £36,717