From £87,168
T&B Development are here to help customers who need an Extension Builder in SN14. We offer a competitive rate to complete all your extension builde...
From £87,160
, SN14
L F Replacement Windows Ltd T/A LF Replacement Windows and Conservator is an established and experienced local extension builder in SN14. Please co...
From £86,856
Need to find an Extension Builder near you for all your extension buildering work?
Cole Brind Property Services provides a local, trusted e...
From £87,216
Corella is a trusted extension builder serving customers in SN14 and the surrounding area. Contact us to today to get a competitive quote for exten...

Building a granny annexe ranges from £86,856 (Cole Brind Property Services based in SN15) to £87,216 (Corella based in SN15), 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 SN14 by posting a job with HaMuch. We will send it to extension builders in SN14 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Chippenham | £34 | £258 |
| Granny Annexe near Calne | £29 | £225 |
| Granny Annexe near Yate | £34 | £263 |
| Granny Annexe near Trowbridge | £34 | £266 |
| Granny Annexe near North Wiltshire | £32 | £242 |
| Granny Annexe near West Wiltshire | £32 | £242 |
| Granny Annexe near South Gloucestershire | £34 | £260 |
| Granny Annexe near Devizes | £32 | £242 |
| Granny Annexe near Kingswood | £34 | £257 |
| Granny Annexe near Keynsham | £33 | £251 |
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 - £17,600

Two storey extension - £88,150

Build a timber frame extension - £26,100

Build a swimming pool - £81,100

Single storey extension - £57,000

Side return extension - £42,625

Install an RSJ - £2,300

Outbuilding - £10,100

Build a Mansard loft conversion - £52,100

Loft conversion - £34,688

Build a kitchen extension - £42,100

Hip to gable loft conversion - £42,100

Granny annexe - £87,100

Garden office - £10,100

Convert a Garage - £16,100

Garage - £18,600

Build a flat roof extension - £22,100

Build a dormer loft conversion - £42,100

Concrete foundations - £6,350

Convert a bungalow loft - £29,100

Convert a basement - £38,625