From £19,116
Matt Minson
At MM and Co Roofing we specialise in all aspects of the roofing industry from moss removal to complete re-roofing. We are experienced in working o...
From £17,396
Paul Martyn
PAULMARTYN Construction are here to help customers who need an Extension Builder in GU6. We offer a competitive rate to complete all your extension...

Underpinning ranges from £17,396 (PAULMARTYN Construction based in GU6) to £19,116 (MM and Co Roofing based in GU5), 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 GU6 by posting a job with HaMuch and we will send it to extension builders in GU6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Guildford | £53 | £298 |
| Underpin A Building near Waverley | £68 | £313 |
| Underpin A Building near Horsham | £38 | £265 |
| Underpin A Building near Great Bookham | £42 | £281 |
| Underpin A Building near Woking | £43 | £277 |
| Underpin A Building near Ash Vale | £41 | £277 |
| Underpin A Building near Reigate | £40 | £270 |
| Underpin A Building near Horley | £38 | £258 |
| Underpin A Building near Crawley | £38 | £255 |
| Underpin A Building near Aldershot | £41 | £275 |
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 - £18,256

Two storey extension - £89,134

Build a timber frame extension - £26,756

Build a swimming pool - £81,756

Single storey extension - £70,120

Side return extension - £50,005

Install an RSJ - £2,956

Outbuilding - £10,756

Build a Mansard loft conversion - £52,756

Loft conversion - £40,838

Build a kitchen extension - £42,756

Hip to gable loft conversion - £42,756

Granny annexe - £87,756

Garden office - £10,756

Convert a Garage - £16,756

Garage - £19,256

Build a flat roof extension - £22,756

Build a dormer loft conversion - £42,756

Concrete foundations - £7,006

Convert a bungalow loft - £29,756

Convert a basement - £46,005