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Select your affordable Falmouth extension builder
TR1 Construction Ltd is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles around Falmo...
SHORE FIX CONSTRUCTION LTD is an established extension buildering business in Falmouth. We come highly recommended and provide competitive quotes f...
From £86,632
J C MITCHELL BUILDERS LTD is a trusted extension builder serving customers in Falmouth and the surrounding area. Contact us to today to get a compe...
From £86,784
Need to find an Extension Builder near you for all your extension buildering work?
KPK Builders Ltd provides a local, trusted extension bui...
From £86,896
Need an Extension Builder in Falmouth? Cloverfield Construction Ltd has been helping local clients (20 mile radius) with their extension buildering...
From £86,752
Jackson Developments provides an affordable, quality service for customers across Cornwall.We undertake all aspects of building work and can manage...
From £86,792
Need to find an Extension Builder near you for all your extension buildering work?
Samuel Winn Design & Build provides a local, trusted ext...
From £86,744
Trusted and professional extension builder in Falmouth. Experienced in all extension buildering work and keeping within budget and on quote. Jo Tra...
From £86,816
Rock Construction is a trusted extension builder serving customers in Falmouth and the surrounding area. Contact us to today to get a competitive q...

Building a granny annexe ranges from £86,448 (SHORE FIX CONSTRUCTION LTD based in TR12) to £86,896 (Cloverfield Construction Ltd based in TR11), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in Falmouth by posting a job with HaMuch. We will send it to extension builders in Falmouth who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Falmouth | £33 | £220 |
| Granny Annexe near Truro | £31 | £206 |
| Granny Annexe near Camborne | £28 | £196 |
| Granny Annexe near Newquay | £32 | £230 |
| Granny Annexe near St Ives, Cornwall | £27 | £188 |
| Granny Annexe near St Austell | £38 | £245 |
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 - £17,214

Two storey extension - £87,571

Build a timber frame extension - £25,714

Build a swimming pool - £80,714

Single storey extension - £49,276

Side return extension - £38,280

Install an RSJ - £1,914

Outbuilding - £9,714

Build a Mansard loft conversion - £51,714

Loft conversion - £31,067

Build a kitchen extension - £41,714

Hip to gable loft conversion - £41,714

Granny annexe - £86,714

Garden office - £9,714

Convert a Garage - £15,714

Garage - £18,214

Build a flat roof extension - £21,714

Build a dormer loft conversion - £41,714

Concrete foundations - £5,964

Convert a bungalow loft - £28,714

Convert a basement - £34,280