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From £31,200
We are a family run Construction Company based in Penzance. We employ over 10 skilled local trade professionals with 2 apprentices as well. Residen...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in St Ives, Cornwall by posting a job with HaMuch and we will send it to extension builders in St Ives, Cornwall.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near St Ives, Cornwall | £27 | £188 |
| Convert A Basement near Camborne | £28 | £196 |
| Convert A Basement near Falmouth | £33 | £220 |
| Convert A Basement near Truro | £31 | £206 |
| Convert A Basement 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 - £16,940

Two storey extension - £87,160

Build a timber frame extension - £25,440

Build a swimming pool - £80,440

Single storey extension - £43,800

Side return extension - £35,200

Install an RSJ - £1,640

Outbuilding - £9,440

Build a Mansard loft conversion - £51,440

Loft conversion - £28,500

Build a kitchen extension - £41,440

Hip to gable loft conversion - £41,440

Granny annexe - £86,440

Garden office - £9,440

Convert a Garage - £15,440

Garage - £17,940

Build a flat roof extension - £21,440

Build a dormer loft conversion - £41,440

Concrete foundations - £5,690

Convert a bungalow loft - £28,440

Convert a basement - £31,200