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Select your affordable Oxfordshire extension builder
Barry Knott
Need to find an Extension Builder near you for all your extension buildering work?
BA Knott Oxford Ltd provides a local, trusted extension ...
Experienced extension builder ready to quote for your work. DRC Construction is the best extension builder in Oxfordshire. No obligation free quote...
Lambert Home Builds is a trusted extension builder serving customers in Oxfordshire and the surrounding area. Contact us to today to get a competit...
DOM ZVIGA
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Approved extension builder in Oxfordshire, covering 20 miles.
Whatever extension buildering work you need, including emergency repairs, hire...
Mick Phillips
Michael E Phillips is an established extension buildering business in Oxfordshire. We come highly recommended and provide competitive quotes for yo...
Singh Builders is an established extension buildering business in Oxfordshire. We come highly recommended and provide competitive quotes for your w...
Need an Extension Builder in Oxfordshire? K C CONSTRUCTION has been helping local clients (20 mile radius) with their extension buildering jobs for...
Zain Hassan
Trusted and professional extension builder in Oxfordshire. Experienced in all extension buildering work and keeping within budget and on quote. Bea...
TNT CONSTRUCTION are here to help customers who need an Extension Builder in Oxfordshire. We offer a competitive rate to complete all your extensio...

Building a granny annexe ranges from £86,984 (Lambert Home Builds based in OX2) to £87,512 (Michael E Phillips based in OX2), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in Oxfordshire by posting a job with HaMuch. We will send it to extension builders in Oxfordshire who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Oxford | £38 | £270 |
| Granny Annexe near Abingdon-on-Thames | £35 | £258 |
| Granny Annexe near Didcot | £36 | £266 |
| Granny Annexe near Witney | £32 | £244 |
| Granny Annexe near Cherwell | £35 | £249 |
| Granny Annexe near South Oxfordshire | £36 | £253 |
| Granny Annexe near Bicester | £35 | £249 |
| Granny Annexe near Vale of White Horse | £36 | £271 |
| Granny Annexe near Aylesbury Vale | £36 | £246 |
| Granny Annexe 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 - £17,710

Two storey extension - £88,314

Build a timber frame extension - £26,210

Build a swimming pool - £81,210

Single storey extension - £59,192

Side return extension - £43,858

Install an RSJ - £2,410

Outbuilding - £10,210

Build a Mansard loft conversion - £52,210

Loft conversion - £35,715

Build a kitchen extension - £42,210

Hip to gable loft conversion - £42,210

Granny annexe - £87,210

Garden office - £10,210

Convert a Garage - £16,210

Garage - £18,710

Build a flat roof extension - £22,210

Build a dormer loft conversion - £42,210

Concrete foundations - £6,460

Convert a bungalow loft - £29,210

Convert a basement - £39,858