Granny Annexe Cost in St Martin
A granny annexe is the ideal solution for offering a young family member their own space in your home while they save up for their own house, or to help an older relative have some independence while keeping them at a safe distance. But how much do they cost to build in St Martin?
Building a granny annexe ranges from £ ( based in ) to £ ( based in ), 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 St Martin by posting a job with HaMuch. We will send it to extension builders in St Martin who will be happy to help you.
Estimates for common extension builder jobs in St Martin;
| Job | Estimate |
| Underpinning a house | £15500 |
| Build a two storey extension | £85000 |
| Build a timber frame extension | £24000 |
| Install a swimming pool | £79000 |
| Cost to build a single storey extension | £10000 |
| Cost to build a side return extension | £15000 |
| Install an RSJ | £200 |
| Build an outbuilding | £8000 |
| Build a mansard loft conversion | £50000 |
| Cost of a loft conversion | £15000 |
| Build a kitchen extension | £40000 |
| Build a hip to gable loft conversion | £40000 |
| Build a granny annexe | £85000 |
| Build a garden office | £8000 |
| Convert a garage | £14000 |
| Build a new garage | £16500 |
| Build a flat roof extension | £20000 |
| Build a dormer loft conversion | £40000 |
| Lay a concrete foundation | £4250 |
| Convert a bungalow loft | £27000 |
| Basement conversion cost | £15000 |