From £87,400
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,160
Need an Extension Builder in DT9? Morris Concrete Designs has been helping local clients (20 mile radius) with their extension buildering jobs for ...

Building a granny annexe ranges from £87,160 (Morris Concrete Designs based in DT9) to £87,400 (Ed Bartlett Building Contractor based in DT9), 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 DT9 by posting a job with HaMuch. We will send it to extension builders in DT9 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Yeovil | £34 | £294 |
| Granny Annexe near South Somerset | £62 | £270 |
| Granny Annexe near Dorchester | £30 | £230 |
| Granny Annexe near Weymouth | £33 | £260 |
| Granny Annexe near Frome | £33 | £263 |
| Granny Annexe near Bridgwater | £30 | £236 |
| Granny Annexe near Taunton | £31 | £242 |
| Granny Annexe near Bath | £32 | £249 |
| Granny Annexe near Poole | £38 | £250 |
| Granny Annexe near Trowbridge | £34 | £266 |
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 - £17,780

Two storey extension - £88,420

Build a timber frame extension - £26,280

Build a swimming pool - £81,280

Single storey extension - £60,600

Side return extension - £44,650

Install an RSJ - £2,480

Outbuilding - £10,280

Build a Mansard loft conversion - £52,280

Loft conversion - £36,375

Build a kitchen extension - £42,280

Hip to gable loft conversion - £42,280

Granny annexe - £87,280

Garden office - £10,280

Convert a Garage - £16,280

Garage - £18,780

Build a flat roof extension - £22,280

Build a dormer loft conversion - £42,280

Concrete foundations - £6,530

Convert a bungalow loft - £29,280

Convert a basement - £40,650