The business can carry out all aspects of building work:- single or double storey extensions- kitchen and bathroom installations- p...
Experienced extension builder ready to quote for your work. DRC Construction is the best extension builder in Didcot. No obligation free quotes and...
Didcot, OX11
Trusted and professional extension builder in Didcot. Experienced in all extension buildering work and keeping within budget and on quote. Jigsaw C...
Martin Patto
Didcot, OX11
Friendly local builder... professional tidy and competitive....
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Didcot, OX11
D.Bradbury Property Services are here to help customers who need an Extension Builder in Didcot. We offer a competitive rate to complete all your e...
From £87,136
Need to find an Extension Builder near you for all your extension buildering work?
THAMESIDE CONSTRUCTION provides a local, trusted extensi...
From £87,160
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,120
Bluestones Garden Design Ltd is an established and experienced local extension builder in Didcot. Please contact us for a free, no obligation quote...
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...

Building a granny annexe ranges from £86,960 (Threesixfive FM Services Ltd based in OX11) 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 Didcot by posting a job with HaMuch. We will send it to extension builders in Didcot who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Didcot | £36 | £266 |
| Granny Annexe near Abingdon-on-Thames | £35 | £258 |
| Granny Annexe near South Oxfordshire | £36 | £253 |
| Granny Annexe near Vale of White Horse | £36 | £271 |
| Granny Annexe near Oxford | £37 | £261 |
| Granny Annexe near Newbury | £37 | £262 |
| Granny Annexe near Thatcham | £38 | £266 |
| Granny Annexe near Caversham | £38 | £265 |
| Granny Annexe near Reading | £42 | £266 |
| Granny Annexe 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 - £17,636

Two storey extension - £88,204

Build a timber frame extension - £26,136

Build a swimming pool - £81,136

Single storey extension - £57,720

Side return extension - £43,030

Install an RSJ - £2,336

Outbuilding - £10,136

Build a Mansard loft conversion - £52,136

Loft conversion - £35,025

Build a kitchen extension - £42,136

Hip to gable loft conversion - £42,136

Granny annexe - £87,136

Garden office - £10,136

Convert a Garage - £16,136

Garage - £18,636

Build a flat roof extension - £22,136

Build a dormer loft conversion - £42,136

Concrete foundations - £6,386

Convert a bungalow loft - £29,136

Convert a basement - £39,030