From £87,264
MG Property Maintenance & Services is a trusted extension builder serving customers in Oxford and the surrounding area. Contact us to today to get ...
From £86,952
Trusted and professional extension builder in Oxford. Experienced in all extension buildering work and keeping within budget and on quote. Design &...
From £87,344
Trusted and professional extension builder in Oxford. Experienced in all extension buildering work and keeping within budget and on quote. Crawford...
From £87,032
CROWN CONSTRUCTION is an established extension buildering business in Oxford. We come highly recommended and provide competitive quotes for your wo...
From £87,224
TNT CONSTRUCTION are here to help customers who need an Extension Builder in Oxford. We offer a competitive rate to complete all your extension bui...
From £86,856
Trusted and professional extension builder in Oxford. Experienced in all extension buildering work and keeping within budget and on quote. Spatial ...
From £87,168
Singh Builders is an established extension buildering business in Oxford. We come highly recommended and provide competitive quotes for your work.<...
From £87,512
Oxford, OX2
Michael E Phillips is an established extension buildering business in Oxford. We come highly recommended and provide competitive quotes for your wo...
From £87,192
Oxford, OX3
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,824
R AND J CONSTRUCTION is an established and experienced local extension builder in Oxford. Please contact us for a free, no obligation quote and com...

Building a granny annexe ranges from £86,824 (R AND J CONSTRUCTION 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 Oxford by posting a job with HaMuch. We will send it to extension builders in Oxford who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Oxford | £37 | £265 |
| Granny Annexe near Abingdon-on-Thames | £35 | £258 |
| Granny Annexe near Cherwell | £35 | £249 |
| Granny Annexe near Witney | £32 | £244 |
| Granny Annexe near Didcot | £36 | £266 |
| 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 - £17,637

Two storey extension - £88,205

Build a timber frame extension - £26,137

Build a swimming pool - £81,137

Single storey extension - £57,736

Side return extension - £43,039

Install an RSJ - £2,337

Outbuilding - £10,137

Build a Mansard loft conversion - £52,137

Loft conversion - £35,033

Build a kitchen extension - £42,137

Hip to gable loft conversion - £42,137

Granny annexe - £87,137

Garden office - £10,137

Convert a Garage - £16,137

Garage - £18,637

Build a flat roof extension - £22,137

Build a dormer loft conversion - £42,137

Concrete foundations - £6,387

Convert a bungalow loft - £29,137

Convert a basement - £39,039