From £17,460
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,708
Maha Khaliq Design is an established and experienced local extension builder in HP27. Please contact us for a free, no obligation quote and competi...

Underpinning ranges from £17,460 (Bellwood Homes based in HP27) to £17,708 (Maha Khaliq Design based in HP27), 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 HP27 by posting a job with HaMuch and we will send it to extension builders in HP27.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Wycombe | £40 | £271 |
| Underpin A Building near Hazlemere | £40 | £272 |
| Underpin A Building near High Wycombe | £39 | £272 |
| Underpin A Building near Aylesbury | £42 | £270 |
| Underpin A Building near Chesham | £42 | £277 |
| Underpin A Building near Berkhamsted | £41 | £263 |
| Underpin A Building near Aylesbury Vale | £36 | £246 |
| Underpin A Building near South Oxfordshire | £36 | £253 |
| Underpin A Building near Dacorum | £42 | £269 |
| Underpin A Building near Maidenhead | £41 | £273 |
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 - £17,584

Two storey extension - £88,126

Build a timber frame extension - £26,084

Build a swimming pool - £81,084

Single storey extension - £56,680

Side return extension - £42,445

Install an RSJ - £2,284

Outbuilding - £10,084

Build a Mansard loft conversion - £52,084

Loft conversion - £34,538

Build a kitchen extension - £42,084

Hip to gable loft conversion - £42,084

Granny annexe - £87,084

Garden office - £10,084

Convert a Garage - £16,084

Garage - £18,584

Build a flat roof extension - £22,084

Build a dormer loft conversion - £42,084

Concrete foundations - £6,334

Convert a bungalow loft - £29,084

Convert a basement - £38,445