Chris Czerwinski
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Underpinning ranges from £17,532 (GREENWORKS CONSTRUCTION based in SL7) to £17,892 (Jesson ladscaping and construction based in hp15), 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 Wycombe by posting a job with HaMuch and we will send it to extension builders in Wycombe.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Wycombe | £40 | £271 |
| Underpin A Building near High Wycombe | £39 | £272 |
| Underpin A Building near Hazlemere | £40 | £272 |
| Underpin A Building near Maidenhead | £41 | £273 |
| Underpin A Building near Chesham | £42 | £277 |
| Underpin A Building near Gerrards Cross | £43 | £282 |
| Underpin A Building near South Oxfordshire | £36 | £253 |
| Underpin A Building near Aylesbury | £42 | £270 |
| Underpin A Building near Slough | £42 | £272 |
| Underpin A Building near Caversham | £38 | £265 |
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 - £17,720

Two storey extension - £88,330

Build a timber frame extension - £26,220

Build a swimming pool - £81,220

Single storey extension - £59,400

Side return extension - £43,975

Install an RSJ - £2,420

Outbuilding - £10,220

Build a Mansard loft conversion - £52,220

Loft conversion - £35,813

Build a kitchen extension - £42,220

Hip to gable loft conversion - £42,220

Granny annexe - £87,220

Garden office - £10,220

Convert a Garage - £16,220

Garage - £18,720

Build a flat roof extension - £22,220

Build a dormer loft conversion - £42,220

Concrete foundations - £6,470

Convert a bungalow loft - £29,220

Convert a basement - £39,975