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Select your affordable Somerset extension builder
S JOYCE BUILDING are here to help customers who need an Extension Builder in Somerset. We offer a competitive rate to complete all your extension b...
Relax... you have found a reliable extension builder in Somerset. ASHWIN CONSTRUCTION is a friendly and reliable company based in Somerset who cons...
BURNELL BUILDERS LTD is an established extension buildering business in Somerset. We come highly recommended and provide competitive quotes for you...
Trusted and professional extension builder in Somerset. Experienced in all extension buildering work and keeping within budget and on quote. CETH C...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
BEANACRE BUILDERS LTD are here to help customers who need an Extension Builder in Somerset. We offer a competitive rate to complete all your extens...
From £86,944
FAULKLAND CONSTRUCTION LTD are here to help customers who need an Extension Builder in Somerset. We offer a competitive rate to complete all your e...
From £86,960
M K J Construction Ltd are here to help customers who need an Extension Builder in Somerset. We offer a competitive rate to complete all your exten...
From £86,904
HOLBROOK CONSTRUCTION are here to help customers who need an Extension Builder in Somerset. We offer a competitive rate to complete all your extens...
From £89,432
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Building a granny annexe ranges from £86,760 (ASHWIN CONSTRUCTION based in BS30) to £89,432 (Adams Of Bath Property Services based in BA2), 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 Somerset by posting a job with HaMuch. We will send it to extension builders in Somerset who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Keynsham | £33 | £251 |
| Granny Annexe near Bath | £32 | £249 |
| Granny Annexe near Kingswood | £34 | £257 |
| Granny Annexe near Trowbridge | £34 | £266 |
| Granny Annexe near Chippenham | £34 | £258 |
| Granny Annexe near Yate | £34 | £263 |
| Granny Annexe near South Gloucestershire | £34 | £260 |
| Granny Annexe near Bristol | £33 | £255 |
| Granny Annexe near Frome | £33 | £263 |
| Granny Annexe near Clifton | £33 | £255 |
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 - £17,765

Two storey extension - £88,397

Build a timber frame extension - £26,265

Build a swimming pool - £81,265

Single storey extension - £60,296

Side return extension - £44,479

Install an RSJ - £2,465

Outbuilding - £10,265

Build a Mansard loft conversion - £52,265

Loft conversion - £36,233

Build a kitchen extension - £42,265

Hip to gable loft conversion - £42,265

Granny annexe - £87,265

Garden office - £10,265

Convert a Garage - £16,265

Garage - £18,765

Build a flat roof extension - £22,265

Build a dormer loft conversion - £42,265

Concrete foundations - £6,515

Convert a bungalow loft - £29,265

Convert a basement - £40,479