From £17,636
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,668
G BEARS CONSTRUCTION LTD are here to help customers who need an Extension Builder in RH14. We offer a competitive rate to complete all your extensi...
From £17,964
Our building services company DGA Complete Construction Ltd have thirty years’ experience and have been helping customers in West Sussex and the ...
From £17,332
Relax... you have found a reliable extension builder in RH14. DGA COMPLETE CONSTRUCTION LTD is a friendly and reliable company based in RH14 who co...
From £17,372
Need an Extension Builder in RH14? MPS Home Improvements Ltd has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £17,596
J & J Construction & Son are here to help customers who need an Extension Builder in RH14. We offer a competitive rate to complete all your extensi...
From £17,436
Our family-run building services company ME Building Solutions has 35 years’ experience in the trade. We have been helping customers in Horsham a...
From £17,764
Need an Extension Builder in RH14? Michael & Co has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £17,708
Relax... you have found a reliable extension builder in RH14. Aurabuild is a friendly and reliable company based in RH14 who consider no job as too...
From £17,772
JBF Building & Roofing Maintenance Ltd is an established and experienced local extension builder in RH14. Please contact us for a free, no obligati...

Underpinning ranges from £17,332 (DGA COMPLETE CONSTRUCTION LTD based in RH14) to £17,964 (DGA Complete Construction Ltd based in RH14), 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 RH14 by posting a job with HaMuch and we will send it to extension builders in RH14.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Horsham | £32 | £226 |
| Underpin A Building near Waverley | £56 | £265 |
| Underpin A Building near Guildford | £44 | £255 |
| Underpin A Building near Arun | £31 | £216 |
| Underpin A Building near Rustington | £32 | £220 |
| Underpin A Building near Littlehampton | £32 | £219 |
| Underpin A Building near Crawley | £33 | £227 |
| Underpin A Building near Lancing | £32 | £219 |
| Underpin A Building near Worthing | £31 | £222 |
| Underpin A Building near Mid Sussex | £30 | £224 |
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 - £17,625

Two storey extension - £88,187

Build a timber frame extension - £26,125

Build a swimming pool - £81,125

Single storey extension - £57,496

Side return extension - £42,904

Install an RSJ - £2,325

Outbuilding - £10,125

Build a Mansard loft conversion - £52,125

Loft conversion - £34,920

Build a kitchen extension - £42,125

Hip to gable loft conversion - £42,125

Granny annexe - £87,125

Garden office - £10,125

Convert a Garage - £16,125

Garage - £18,625

Build a flat roof extension - £22,125

Build a dormer loft conversion - £42,125

Concrete foundations - £6,375

Convert a bungalow loft - £29,125

Convert a basement - £38,904