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Select your affordable St Columb extension builder
Relax... you have found a reliable extension builder in St Columb. BUILDMARK BUILDERS is a friendly and reliable company based in St Columb who con...
Elements Build SW Ltd is an established and experienced local extension builder in St Columb. Please contact us for a free, no obligation quote and...
From £10,088
Need an Extension Builder in St Columb? DAVEY CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs...
From £9,632
Relax... you have found a reliable extension builder in St Columb. KC DESIGN AND BUILD is a friendly and reliable company based in St Columb who co...
From £9,888
HANDLEY BUILDERS is an established and experienced local extension builder in St Columb. Please contact us for a free, no obligation quote and comp...

Garden offices range from the cheapest of £9,632 (KC DESIGN AND BUILD based in TR2) to the dearest of £10,088 (DAVEY CONSTRUCTION LTD based in PL30), 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 St Columb by posting a job with HaMuch. We'll send it to extension builders in St Columb.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Newquay | £32 | £230 |
| Garden Office near St Austell | £38 | £245 |
| Garden Office near Truro | £31 | £206 |
| Garden Office near Falmouth | £33 | £220 |
| Garden Office near Camborne | £28 | £196 |
| Garden Office near St Ives, Cornwall | £27 | £188 |
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 - £17,377

Two storey extension - £87,816

Build a timber frame extension - £25,877

Build a swimming pool - £80,877

Single storey extension - £52,547

Side return extension - £40,120

Install an RSJ - £2,077

Outbuilding - £9,877

Build a Mansard loft conversion - £51,877

Loft conversion - £32,600

Build a kitchen extension - £41,877

Hip to gable loft conversion - £41,877

Granny annexe - £86,877

Garden office - £9,877

Convert a Garage - £15,877

Garage - £18,377

Build a flat roof extension - £21,877

Build a dormer loft conversion - £41,877

Concrete foundations - £6,127

Convert a bungalow loft - £28,877

Convert a basement - £36,120