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Need an Extension Builder in OX5? K C CONSTRUCTION has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
R AND J CONSTRUCTION is an established and experienced local extension builder in OX5. Please contact us for a free, no obligation quote and compet...
From £87,096
KEITH COOK CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in OX5. We offer a competitive rate to complete all your e...
From £87,088
Trusted and professional extension builder in OX5. Experienced in all extension buildering work and keeping within budget and on quote. Macfarlane ...
From £87,344
Need an Extension Builder in OX5? Yarnton Leisure Buildings has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £86,952
Inspired Restorations offer a range of services that cover all aspects of property renovations and maintenance. Whether you require a full renovati...

Building a granny annexe ranges from £86,824 (R AND J CONSTRUCTION based in OX2) to £87,344 (Yarnton Leisure Buildings based in OX5), 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 OX5 by posting a job with HaMuch. We will send it to extension builders in OX5 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Cherwell | £35 | £249 |
| Granny Annexe near Oxford | £38 | £270 |
| Granny Annexe near Bicester | £35 | £249 |
| Granny Annexe near Witney | £32 | £244 |
| Granny Annexe near Abingdon-on-Thames | £35 | £258 |
| Granny Annexe near South Oxfordshire | £36 | £253 |
| Granny Annexe near Didcot | £36 | £266 |
| Granny Annexe near Vale of White Horse | £36 | £271 |
| Granny Annexe near Aylesbury Vale | £36 | £246 |
| Granny Annexe near Banbury | £33 | £239 |
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 - £17,588

Two storey extension - £88,132

Build a timber frame extension - £26,088

Build a swimming pool - £81,088

Single storey extension - £56,760

Side return extension - £42,490

Install an RSJ - £2,288

Outbuilding - £10,088

Build a Mansard loft conversion - £52,088

Loft conversion - £34,575

Build a kitchen extension - £42,088

Hip to gable loft conversion - £42,088

Granny annexe - £87,088

Garden office - £10,088

Convert a Garage - £16,088

Garage - £18,588

Build a flat roof extension - £22,088

Build a dormer loft conversion - £42,088

Concrete foundations - £6,338

Convert a bungalow loft - £29,088

Convert a basement - £38,490