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Stag Design & Build is the ultimate package for your Extension, New Build, Renovations and all other aspects involving the construction industry, d...
Need to find an Extension Builder near you for all your extension buildering work?
M J LLEWLLYN BUILDING SERVICES provides a local, trusted...

Garden offices range from the cheapest of £9,904 (M J LLEWLLYN BUILDING SERVICES based in GL12) to the dearest of £10,096 (STAG Design & Build Ltd based in GL12), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in GL12 by posting a job with HaMuch. We'll send it to extension builders in GL12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Yate | £34 | £263 |
| Garden Office near South Gloucestershire | £34 | £260 |
| Garden Office near Bradley Stoke | £34 | £259 |
| Garden Office near Stroud | £33 | £249 |
| Garden Office near Kingswood | £34 | £257 |
| Garden Office near Chippenham | £34 | £258 |
| Garden Office near Quedgeley | £31 | £247 |
| Garden Office near Bristol | £33 | £255 |
| Garden Office near Clifton | £33 | £255 |
| Garden Office 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 - £17,500

Two storey extension - £88,000

Build a timber frame extension - £26,000

Build a swimming pool - £81,000

Single storey extension - £55,000

Side return extension - £41,500

Install an RSJ - £2,200

Outbuilding - £10,000

Build a Mansard loft conversion - £52,000

Loft conversion - £33,750

Build a kitchen extension - £42,000

Hip to gable loft conversion - £42,000

Granny annexe - £87,000

Garden office - £10,000

Convert a Garage - £16,000

Garage - £18,500

Build a flat roof extension - £22,000

Build a dormer loft conversion - £42,000

Concrete foundations - £6,250

Convert a bungalow loft - £29,000

Convert a basement - £37,500