From £87,008
Gastropod Services is an established and experienced local extension builder in GL13. Please contact us for a free, no obligation quote and competi...
From £86,904
Need to find an Extension Builder near you for all your extension buildering work?
M J LLEWLLYN BUILDING SERVICES provides a local, trusted...
From £87,096
Stag Design & Build is the ultimate package for your Extension, New Build, Renovations and all other aspects involving the construction industry, d...
From £86,912
Experienced extension builder ready to quote for your work. G & J BUILDING MAINTENANCE is the best extension builder in GL13. No obligation free qu...
From £86,840
MI Works Cotswolds Ltd are here to help customers who need an Extension Builder in GL13. We offer a competitive rate to complete all your extension...
From £87,184
Need to find an Extension Builder near you for all your extension buildering work?
WILSONS BUILDERS CO LTD provides a local, trusted extens...
From £86,696
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,864
Need an Extension Builder in GL13? Milliner Construction has been helping local clients (20 mile radius) with their extension buildering jobs for m...
From £87,496
J D Plant Groundwork is a well established construction company providing value-added engineering, construction and service skills to customers for...
From £86,760
ian rice building ltd are a friendly reliable business, for all your building needs.
we undertake all works from small repairs to large ...

Building a granny annexe ranges from £86,696 (J R BUILDING LTD based in GL2) to £87,496 (JD PLANT GRDWRK SPECIALIST LTD based in GL14), 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 GL13 by posting a job with HaMuch. We will send it to extension builders in GL13 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Yate | £34 | £263 |
| Granny Annexe near Stroud | £33 | £249 |
| Granny Annexe near Bradley Stoke | £34 | £259 |
| Granny Annexe near South Gloucestershire | £34 | £260 |
| Granny Annexe near Quedgeley | £31 | £247 |
| Granny Annexe near Gloucester | £30 | £235 |
| Granny Annexe near Kingswood | £34 | £257 |
| Granny Annexe near Bristol | £33 | £255 |
| Granny Annexe near Clifton | £33 | £255 |
| 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 - £17,476

Two storey extension - £87,964

Build a timber frame extension - £25,976

Build a swimming pool - £80,976

Single storey extension - £54,520

Side return extension - £41,230

Install an RSJ - £2,176

Outbuilding - £9,976

Build a Mansard loft conversion - £51,976

Loft conversion - £33,525

Build a kitchen extension - £41,976

Hip to gable loft conversion - £41,976

Granny annexe - £86,976

Garden office - £9,976

Convert a Garage - £15,976

Garage - £18,476

Build a flat roof extension - £21,976

Build a dormer loft conversion - £41,976

Concrete foundations - £6,226

Convert a bungalow loft - £28,976

Convert a basement - £37,230