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From £10,128
Trevillion Property Services Ltd
Stephen Trevillion
Member since October 2026
Minor and major building works
A1 CONSTRUCTION & MAINTENCE
Need an Extension Builder in Calstock? A1 CONSTRUCTION & MAINTENCE has been helping local clients (20 mile radius) with their extension buildering...
MJR Construction SW Ltd
Relax... you have found a reliable extension builder in Calstock. MJR Construction SW Ltd is a friendly and reliable company based in Calstock who ...
STEVENS BUILDING & MAINT LTD
Need to find an Extension Builder near you for all your extension buildering work?
STEVENS BUILDING & MAINT LTD provides a local, trusted e...
From £9,632
MICHAEL P PHILP
MICHAEL P PHILP is an established and experienced local extension builder in Calstock. Please contact us for a free, no obligation quote and compet...
From £10,152
360 Construction
360 Construction are here to help customers who need an Extension Builder in Calstock. We offer a competitive rate to complete all your extension b...
From £9,784
TJ FRIEND CONSTRUCTION
TJ FRIEND CONSTRUCTION are here to help customers who need an Extension Builder in Calstock. We offer a competitive rate to complete all your exten...
From £9,944
CONSTRUCTION MANAGEMENT SERVIC
Trusted and professional extension builder in Calstock. Experienced in all extension buildering work and keeping within budget and on quote. CONSTR...
From £9,848
A Rated Builders
A Rated Builders is an established and experienced local extension builder in Calstock. Please contact us for a free, no obligation quote and compe...
Garden Office Cost in Calstock
Garden offices range from the cheapest of £9,632 (MICHAEL P PHILP based in PL12) to the dearest of £10,288 (Brian C Credicott based in PL19), 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 Calstock by posting a job with HaMuch. We'll send it to extension builders in Calstock.
- How much does a garden office cost?
- Types of garden office building
- How long does it take to build a garden office?
- Do you need foundations for a garden office?
- Can I run a business from a garden office?
- Is a garden office tax deductible?
- Does a garden office add value to your home?
- Do you need planning permission for a garden office?
- Are garden offices warm in winter?
- Can I live in a garden office?
- Are garden offices worth it?
Get extension builder rates instantly
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Plymouth | £30 | £230 |
| Garden Office near Teignbridge | £27 | £260 |
| Garden Office near Newton Abbot | £27 | £236 |
| Garden Office near St Austell | £38 | £245 |
| Garden Office near Paignton | £27 | £222 |
| Garden Office near Torbay | £27 | £223 |
Estimates for common extension builder jobs in Calstock;
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 - £17,422
Two storey extension - £87,884
Build a timber frame extension - £25,922
Build a swimming pool - £80,922
Single storey extension - £53,448
Side return extension - £40,627
Install an RSJ - £2,122
Outbuilding - £9,922
Build a Mansard loft conversion - £51,922
Loft conversion - £33,023
Build a kitchen extension - £41,922
Hip to gable loft conversion - £41,922
Granny annexe - £86,922
Garden office - £9,922
Convert a Garage - £15,922
Garage - £18,422
Build a flat roof extension - £21,922
Build a dormer loft conversion - £41,922
Concrete foundations - £6,172
Convert a bungalow loft - £28,922
Convert a basement - £36,627