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Select your affordable Marazion extension builder
Phil Searle
Searle Construction are here to help customers who need an Extension Builder in Marazion. We offer a competitive rate to complete all your extensi...
From £9,440
We are a family run Construction Company based in Penzance. We employ over 10 skilled local trade professionals with 2 apprentices as well. Residen...
From £9,472
Trusted and professional extension builder in Marazion. Experienced in all extension buildering work and keeping within budget and on quote. Marks ...

Garden offices range from the cheapest of £9,440 (TGP Construction based in TR18) to the dearest of £9,664 (Searle Construction based in TR19), 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 Marazion by posting a job with HaMuch. We'll send it to extension builders in Marazion.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near St Ives, Cornwall | £27 | £188 |
| Garden Office near Camborne | £28 | £196 |
| Garden Office near Falmouth | £33 | £220 |
| Garden Office near Truro | £31 | £206 |
| Garden Office near Newquay | £32 | £230 |
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 - £17,025

Two storey extension - £87,288

Build a timber frame extension - £25,525

Build a swimming pool - £80,525

Single storey extension - £45,507

Side return extension - £36,160

Install an RSJ - £1,725

Outbuilding - £9,525

Build a Mansard loft conversion - £51,525

Loft conversion - £29,300

Build a kitchen extension - £41,525

Hip to gable loft conversion - £41,525

Granny annexe - £86,525

Garden office - £9,525

Convert a Garage - £15,525

Garage - £18,025

Build a flat roof extension - £21,525

Build a dormer loft conversion - £41,525

Concrete foundations - £5,775

Convert a bungalow loft - £28,525

Convert a basement - £32,160