
Building a granny annexe ranges from £86,528 (C O JOYCE LIMITED based in BA16) to £86,528 (C O JOYCE LIMITED based in BA16), 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 BA6 by posting a job with HaMuch. We will send it to extension builders in BA6 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near South Somerset | £62 | £270 |
| Granny Annexe near Bridgwater | £30 | £236 |
| Granny Annexe near Yeovil | £34 | £294 |
| Granny Annexe near Bath | £32 | £249 |
| Granny Annexe near North Somerset | £32 | £245 |
| Granny Annexe near Frome | £33 | £263 |
| Granny Annexe near Weston-super-Mare | £33 | £253 |
| Granny Annexe near Taunton | £31 | £242 |
| Granny Annexe near Keynsham | £33 | £251 |
| Granny Annexe near Clevedon | £32 | £243 |
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 - £17,028

Two storey extension - £87,292

Build a timber frame extension - £25,528

Build a swimming pool - £80,528

Single storey extension - £45,560

Side return extension - £36,190

Install an RSJ - £1,728

Outbuilding - £9,528

Build a Mansard loft conversion - £51,528

Loft conversion - £29,325

Build a kitchen extension - £41,528

Hip to gable loft conversion - £41,528

Granny annexe - £86,528

Garden office - £9,528

Convert a Garage - £15,528

Garage - £18,028

Build a flat roof extension - £21,528

Build a dormer loft conversion - £41,528

Concrete foundations - £5,778

Convert a bungalow loft - £28,528

Convert a basement - £32,190