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 BT40?
Building a granny annexe ranges from £85,960 (Anak based in BT40) to £86,168 (LM Design & Build based in BT36), 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 BT40 by posting a job with HaMuch. We will send it to extension builders in BT40 who will be happy to help you.

| Business name | Granny annexe cost |
|---|---|
| Anak , larne, BT40 | £85,960 |
| DGA, Antrim, BT37 | £86,160 |
| Ballantine building solutions, Antrim, Bt37 | £86,144 |
| LM Design & Build, Antrim, BT36 | £86,168 |
| Designco Ltd, Antrim, BT36 | £86,152 |
| M & M Construction, Mossley, BT36 | £86,080 |
| SM Plumbing & Heating, Ormeau, BT7 | £86,088 |
| C.H Property Services, Falls Road, BT12 | £86,088 |
| MIRKOW, Cregagh, BT6 | £86,088 |
| Firenstack Solutions, Cregagh, BT6 | £86,080 |
| Extended living by Gilbert-Ash, 47 Boucher Road, Belfast, BT12 | £86,072 |
| McEvoy Building & Joinery, Cregagh, BT6 | £86,096 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Larne | £15 | £120 |
| Granny Annexe near Carrickfergus | £21 | £145 |
| Granny Annexe near Ballyclare | £17 | £110 |
| Granny Annexe near Greenisland | £20 | £134 |
| Granny Annexe near Holywood | £19 | £125 |
| Granny Annexe near Bangor | £20 | £150 |
| Granny Annexe near Bangor | £20 | £150 |
| Granny Annexe near Belfast | £19 | £132 |
| Granny Annexe near Ballygowan | £20 | £150 |
| Granny Annexe near Comber | £20 | £142 |