The business can carry out all aspects of building work:- single or double storey extensions- kitchen and bathroom installations- p...
Trusted and professional extension builder in OX11. Experienced in all extension buildering work and keeping within budget and on quote. Jigsaw Com...
Martin Patto
Friendly local builder... professional tidy and competitive....
D.Bradbury Property Services are here to help customers who need an Extension Builder in OX11. We offer a competitive rate to complete all your ext...
From £17,620
Bluestones Garden Design Ltd is an established and experienced local extension builder in OX11. Please contact us for a free, no obligation quote a...

Underpinning ranges from £17,460 (Threesixfive FM Services Ltd based in OX11) to £17,700 (Oxon Construction & Renovation based in OX11), 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 OX11 by posting a job with HaMuch and we will send it to extension builders in OX11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Didcot | £36 | £266 |
| Underpin A Building near Abingdon-on-Thames | £35 | £258 |
| Underpin A Building near South Oxfordshire | £36 | £253 |
| Underpin A Building near Vale of White Horse | £36 | £271 |
| Underpin A Building near Oxford | £37 | £261 |
| Underpin A Building near Newbury | £37 | £262 |
| Underpin A Building near Thatcham | £38 | £266 |
| Underpin A Building near Caversham | £38 | £265 |
| Underpin A Building near Reading | £42 | £266 |
| Underpin A Building near Witney | £32 | £244 |
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 - £17,570

Two storey extension - £88,106

Build a timber frame extension - £26,070

Build a swimming pool - £81,070

Single storey extension - £56,408

Side return extension - £42,292

Install an RSJ - £2,270

Outbuilding - £10,070

Build a Mansard loft conversion - £52,070

Loft conversion - £34,410

Build a kitchen extension - £42,070

Hip to gable loft conversion - £42,070

Granny annexe - £87,070

Garden office - £10,070

Convert a Garage - £16,070

Garage - £18,570

Build a flat roof extension - £22,070

Build a dormer loft conversion - £42,070

Concrete foundations - £6,320

Convert a bungalow loft - £29,070

Convert a basement - £38,292