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Mathew Rees
Silicone Render System Ltd is a plastering company based in Porthcawl, with over 20 years’ experience in the plastering trade. W...

Building a granny annexe ranges from £89,080 (Silicone Rendering Systems Ltd based in CF36) to £89,080 (Silicone Rendering Systems Ltd based in CF36), 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 CF36 by posting a job with HaMuch. We will send it to extension builders in CF36 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Porthcawl | £33 | £252 |
| Granny Annexe near Pyle | £34 | £262 |
| Granny Annexe near Bridgend | £32 | £200 |
| Granny Annexe near Port Talbot | £31 | £227 |
| Granny Annexe near Maesteg | £38 | £283 |
| Granny Annexe near Vale of Glamorgan | £29 | £217 |
| Granny Annexe near Neath | £30 | £225 |
| Granny Annexe near Swansea | £29 | £229 |
| Granny Annexe near Neath Port Talbot | £31 | £224 |
| Granny Annexe near Rhondda | £31 | £206 |
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 - £19,580

Two storey extension - £91,120

Build a timber frame extension - £28,080

Build a swimming pool - £83,080

Single storey extension - £96,600

Side return extension - £64,900

Install an RSJ - £4,280

Outbuilding - £12,080

Build a Mansard loft conversion - £54,080

Loft conversion - £53,250

Build a kitchen extension - £44,080

Hip to gable loft conversion - £44,080

Granny annexe - £89,080

Garden office - £12,080

Convert a Garage - £18,080

Garage - £20,580

Build a flat roof extension - £24,080

Build a dormer loft conversion - £44,080

Concrete foundations - £8,330

Convert a bungalow loft - £31,080

Convert a basement - £60,900