From £17,492
Trusted and professional extension builder in RH1. Experienced in all extension buildering work and keeping within budget and on quote. Studio Luci...
From £17,820
Relax... you have found a reliable extension builder in RH1. Creations Building & Landscaping is a friendly and reliable company based in RH1 who c...
From £17,812
Need an Extension Builder in RH1? PJS Partnership Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for many...
From £17,596
ROLAND KNIGHT CONSTRUCTION LTD is an established and experienced local extension builder in RH1. Please contact us for a free, no obligation quote ...
From £17,428
Upright Construction Ltd is an established and experienced local extension builder in RH1. Please contact us for a free, no obligation quote and co...
From £17,724
Need to find an Extension Builder near you for all your extension buildering work?
S C H BUILDING SERVICES provides a local, trusted extens...
From £17,388
Relax... you have found a reliable extension builder in RH1. Goose Construction Ltd is a friendly and reliable company based in RH1 who consider no...
From £17,292
The Reigate Marble Shop LTD.
Established in 2005, The Reigate Marble Shop...
From £17,540
Need an Extension Builder in RH1? C Dingle Builders & Decorators has been helping local clients (10 mile radius) with their extension buildering jo...

Underpinning ranges from £17,292 (REIGATE MARBLE SHOP based in RH2) to £17,820 (Creations Building & Landscaping based in RH2), 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 RH1 by posting a job with HaMuch and we will send it to extension builders in RH1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Redhill | £36 | £236 |
| Underpin A Building near Reigate | £36 | £238 |
| Underpin A Building near Reigate & Banstead | £36 | £235 |
| Underpin A Building near Caterham | £37 | £235 |
| Underpin A Building near Horley | £35 | £234 |
| Underpin A Building near Tadworth | £36 | £234 |
| Underpin A Building near Epsom | £37 | £235 |
| Underpin A Building near Crawley | £33 | £227 |
| Underpin A Building near Ewell | £37 | £235 |
| Underpin A Building near Sutton | £37 | £234 |
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 - £17,564

Two storey extension - £88,096

Build a timber frame extension - £26,064

Build a swimming pool - £81,064

Single storey extension - £56,280

Side return extension - £42,220

Install an RSJ - £2,264

Outbuilding - £10,064

Build a Mansard loft conversion - £52,064

Loft conversion - £34,350

Build a kitchen extension - £42,064

Hip to gable loft conversion - £42,064

Granny annexe - £87,064

Garden office - £10,064

Convert a Garage - £16,064

Garage - £18,564

Build a flat roof extension - £22,064

Build a dormer loft conversion - £42,064

Concrete foundations - £6,314

Convert a bungalow loft - £29,064

Convert a basement - £38,220