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Select your affordable Calstock extension builder
From £26,128
Stephen Trevillion
Member since October 2026
Minor and major building works
Need an Extension Builder in Calstock? A1 CONSTRUCTION & MAINTENCE has been helping local clients (20 mile radius) with their extension buildering...
Relax... you have found a reliable extension builder in Calstock. MJR Construction SW Ltd is a friendly and reliable company based in Calstock who ...
Need to find an Extension Builder near you for all your extension buildering work?
STEVENS BUILDING & MAINT LTD provides a local, trusted e...
From £25,632
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 £26,152
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 £25,784
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 £25,944
Trusted and professional extension builder in Calstock. Experienced in all extension buildering work and keeping within budget and on quote. CONSTR...
From £25,848
A Rated Builders is an established and experienced local extension builder in Calstock. Please contact us for a free, no obligation quote and compe...

A timber frame extension built in Calstock typically ranges from £25,632 (MICHAEL P PHILP based in PL12) to £26,288 (Brian C Credicott based in PL19), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build a timber frame extension in Calstock by posting a job with HaMuch and we'll send it to extension builders in Calstock.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Plymouth | £30 | £230 |
| Build A Timber Frame Extension near Teignbridge | £27 | £260 |
| Build A Timber Frame Extension near Newton Abbot | £27 | £236 |
| Build A Timber Frame Extension near St Austell | £38 | £245 |
| Build A Timber Frame Extension near Paignton | £27 | £222 |
| Build A Timber Frame Extension near Torbay | £27 | £223 |
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