From £87,392
Need to find an Extension Builder near you for all your extension buildering work?
Steel Brook Construction provides a local, trusted exten...
From £87,168
Need to find an Extension Builder near you for all your extension buildering work?
Inside Out Oxford, Bespoke Garden Rooms provides a loca...
From £87,160
Wallingford, OX10
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,856
AJC PROJECT SERVICES Ltd is an established and experienced local extension builder in Wallingford. Please contact us for a free, no obligation quot...
From £87,096
Countryside Oak is an established and experienced local extension builder in Wallingford. Please contact us for a free, no obligation quote and com...
From £86,880
Relax... you have found a reliable extension builder in Wallingford. JOHN BURDER CONSTRUCTION LIMIT is a friendly and reliable company based in Wal...
From £86,976
D.Bradbury Property Services are here to help customers who need an Extension Builder in Wallingford. We offer a competitive rate to complete all y...
From £87,096
Trusted and professional extension builder in Wallingford. Experienced in all extension buildering work and keeping within budget and on quote. Jig...
From £87,192
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,200
The business can carry out all aspects of building work:- single or double storey extensions- kitchen and bathroom installations- p...

Building a granny annexe ranges from £86,856 (AJC PROJECT SERVICES Ltd based in OX10) to £87,392 (Steel Brook Construction based in OX10), 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 Wallingford by posting a job with HaMuch. We will send it to extension builders in Wallingford who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near South Oxfordshire | £36 | £253 |
| Granny Annexe near Didcot | £36 | £266 |
| Granny Annexe near Abingdon-on-Thames | £35 | £258 |
| Granny Annexe near Caversham | £38 | £265 |
| Granny Annexe near Oxford | £37 | £261 |
| Granny Annexe near Reading | £42 | £266 |
| Granny Annexe near Wycombe | £39 | £271 |
| Granny Annexe near Woodley | £42 | £266 |
| Granny Annexe near High Wycombe | £39 | £272 |
| Granny Annexe near Vale of White Horse | £36 | £271 |
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 - £17,602

Two storey extension - £88,152

Build a timber frame extension - £26,102

Build a swimming pool - £81,102

Single storey extension - £57,032

Side return extension - £42,643

Install an RSJ - £2,302

Outbuilding - £10,102

Build a Mansard loft conversion - £52,102

Loft conversion - £34,703

Build a kitchen extension - £42,102

Hip to gable loft conversion - £42,102

Granny annexe - £87,102

Garden office - £10,102

Convert a Garage - £16,102

Garage - £18,602

Build a flat roof extension - £22,102

Build a dormer loft conversion - £42,102

Concrete foundations - £6,352

Convert a bungalow loft - £29,102

Convert a basement - £38,643