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 Portrush?
Building a granny annexe ranges from £86,304 (Purdy build based in bt53) to £86,448 (SF Carpentry based in BT51), 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 Portrush by posting a job with HaMuch. We will send it to extension builders in Portrush who will be happy to help you.

| Business name | Granny annexe cost |
|---|---|
| purdy build, Antrim, bt53 | £86,304 |
| SF Carpentry, Londonderry, BT51 | £86,448 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Coleraine | £21 | £181 |
| Granny Annexe near Ballymoney | £18 | £163 |
| Granny Annexe near Dungiven | £21 | £179 |
| Granny Annexe near Strathfoyle | £20 | £166 |
| Granny Annexe near Londonderry | £20 | £166 |
| Granny Annexe near Newbuildings | £20 | £166 |