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Select your affordable Wiltshire extension builder
Kevin Sainsbury
K E Sainsbury Builders is an established and experienced local extension builder in Wiltshire. Please contact us for a free, no obligation quote an...
Bryan Loveday
Relax... you have found a reliable extension builder in Wiltshire. Bryan Loveday Services Limited is a friendly and reliable company based in Wilts...
Need to find an Extension Builder near you for all your extension buildering work?
2 Counties Construction provides a local, trusted extens...
Need an Extension Builder in Wiltshire? EMBERSON GENERAL BUILDERS has been helping local clients (20 mile radius) with their extension buildering j...
From £87,296
Hughie Crumlish
All ways on time keep our customers 100% satisfied
From £86,896
Wiltshire, BA12
Experienced extension builder ready to quote for your work. George Davies Group Ltd is the best extension builder in Wiltshire. No obligation free ...
From £86,872
McIntosh DBR Ltd. is an established extension buildering business in Wiltshire. We come highly recommended and provide competitive quotes for your ...
From £87,136
Experienced extension builder ready to quote for your work. Craft Renovations is the best extension builder in Wiltshire. No obligation free quotes...

Building a granny annexe ranges from £86,696 (2 Counties Construction based in SP3) to £87,296 (Prestige home improvements based in BA11), 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 Wiltshire by posting a job with HaMuch. We will send it to extension builders in Wiltshire who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Frome | £33 | £263 |
| Granny Annexe near Trowbridge | £34 | £266 |
| Granny Annexe near Devizes | £32 | £242 |
| Granny Annexe near West Wiltshire | £32 | £242 |
| Granny Annexe near North Wiltshire | £32 | £242 |
| Granny Annexe near Bath | £32 | £249 |
| Granny Annexe near Salisbury | £35 | £247 |
| Granny Annexe near Calne | £29 | £225 |
| Granny Annexe near Keynsham | £33 | £251 |
| Granny Annexe near Chippenham | £34 | £258 |
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 - £17,508

Two storey extension - £88,012

Build a timber frame extension - £26,008

Build a swimming pool - £81,008

Single storey extension - £55,160

Side return extension - £41,590

Install an RSJ - £2,208

Outbuilding - £10,008

Build a Mansard loft conversion - £52,008

Loft conversion - £33,825

Build a kitchen extension - £42,008

Hip to gable loft conversion - £42,008

Granny annexe - £87,008

Garden office - £10,008

Convert a Garage - £16,008

Garage - £18,508

Build a flat roof extension - £22,008

Build a dormer loft conversion - £42,008

Concrete foundations - £6,258

Convert a bungalow loft - £29,008

Convert a basement - £37,590