From £17,764
Oxfordshire, OX1
MG Property Maintenance & Services is a trusted extension builder serving customers in Oxfordshire and the surrounding area. Contact us to today to...
From £17,452
Oxfordshire, OX1
Trusted and professional extension builder in Oxfordshire. Experienced in all extension buildering work and keeping within budget and on quote. Des...
From £17,532
CROWN CONSTRUCTION is an established extension buildering business in Oxfordshire. We come highly recommended and provide competitive quotes for yo...
From £17,844
Oxfordshire, OX2
Trusted and professional extension builder in Oxfordshire. Experienced in all extension buildering work and keeping within budget and on quote. Cra...
From £17,724
TNT CONSTRUCTION are here to help customers who need an Extension Builder in Oxfordshire. We offer a competitive rate to complete all your extensio...
From £15,516
Trusted and professional extension builder in Oxfordshire. Experienced in all extension buildering work and keeping within budget and on quote. Bea...
From £17,356
Oxfordshire, OX3
Trusted and professional extension builder in Oxfordshire. Experienced in all extension buildering work and keeping within budget and on quote. Spa...
From £18,012
Michael E Phillips is an established extension buildering business in Oxfordshire. We come highly recommended and provide competitive quotes for yo...
From £17,692
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,380
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £15,516 (Beaumont Design & Build Ltd based in OX4) to £18,012 (Michael E Phillips based in OX2), 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 Oxfordshire by posting a job with HaMuch and we will send it to extension builders in Oxfordshire.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Oxford | £37 | £261 |
| Underpin A Building near Abingdon-on-Thames | £35 | £258 |
| Underpin A Building near Didcot | £36 | £266 |
| Underpin A Building near Witney | £32 | £244 |
| Underpin A Building near Cherwell | £35 | £249 |
| Underpin A Building near South Oxfordshire | £36 | £253 |
| Underpin A Building near Bicester | £35 | £249 |
| Underpin A Building near Vale of White Horse | £36 | £271 |
| Underpin A Building near Aylesbury Vale | £36 | £246 |
| Underpin A Building near Aylesbury | £42 | £270 |
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 - £17,427

Two storey extension - £87,891

Build a timber frame extension - £25,927

Build a swimming pool - £80,927

Single storey extension - £53,544

Side return extension - £40,681

Install an RSJ - £2,127

Outbuilding - £9,927

Build a Mansard loft conversion - £51,927

Loft conversion - £33,068

Build a kitchen extension - £41,927

Hip to gable loft conversion - £41,927

Granny annexe - £86,927

Garden office - £9,927

Convert a Garage - £15,927

Garage - £18,427

Build a flat roof extension - £21,927

Build a dormer loft conversion - £41,927

Concrete foundations - £6,177

Convert a bungalow loft - £28,927

Convert a basement - £36,681