From £87,544
GARY G BOND LIMITED are here to help customers who need an Extension Builder in Downend. We offer a competitive rate to complete all your extension...
From £86,920
Relax... you have found a reliable extension builder in Downend. RD Pope Construction is a friendly and reliable company based in Downend who consi...
From £86,856
Downend, BS16
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,768
Trusted and professional extension builder in Downend. Experienced in all extension buildering work and keeping within budget and on quote. Jeremy ...
From £87,208
FEATHERBED CONSTRUCTION is a trusted extension builder serving customers in Downend and the surrounding area. Contact us to today to get a competit...
From £86,728
Neil Causon & Son is an established and experienced local extension builder in Downend. Please contact us for a free, no obligation quote and compe...
From £86,840
MOORLAND DESIGN & BUILD LTD are here to help customers who need an Extension Builder in Downend. We offer a competitive rate to complete all your e...
From £87,080
Downend, BS16
HYATT BUILDING SERVICES are here to help customers who need an Extension Builder in Downend. We offer a competitive rate to complete all your exten...
From £87,192
B ROBINSON BUILDING is an established and experienced local extension builder in Downend. Please contact us for a free, no obligation quote and com...
From £87,248
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Building a granny annexe ranges from £86,728 (Neil Causon & Son based in BS21) to £87,544 (GARY G BOND LIMITED based in BS16), 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 Downend by posting a job with HaMuch. We will send it to extension builders in Downend who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Kingswood | £34 | £257 |
| Granny Annexe near South Gloucestershire | £34 | £260 |
| Granny Annexe near Bristol | £33 | £255 |
| Granny Annexe near Bradley Stoke | £34 | £259 |
| Granny Annexe near Clifton | £33 | £255 |
| Granny Annexe near Keynsham | £33 | £251 |
| Granny Annexe near Yate | £34 | £263 |
| Granny Annexe near Portishead | £33 | £247 |
| Granny Annexe near Bath | £32 | £249 |
| Granny Annexe near North Somerset | £32 | £245 |
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 - £17,538

Two storey extension - £88,058

Build a timber frame extension - £26,038

Build a swimming pool - £81,038

Single storey extension - £55,768

Side return extension - £41,932

Install an RSJ - £2,238

Outbuilding - £10,038

Build a Mansard loft conversion - £52,038

Loft conversion - £34,110

Build a kitchen extension - £42,038

Hip to gable loft conversion - £42,038

Granny annexe - £87,038

Garden office - £10,038

Convert a Garage - £16,038

Garage - £18,538

Build a flat roof extension - £22,038

Build a dormer loft conversion - £42,038

Concrete foundations - £6,288

Convert a bungalow loft - £29,038

Convert a basement - £37,932