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 B21?
Building a granny annexe ranges from £86,536 (Renka based in B19) to £87,800 (Sperin Interiors based in B66), 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 B21 by posting a job with HaMuch. We will send it to extension builders in B21 who will be happy to help you.

| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Smethwick | £25 | £195 |
| Granny Annexe near Birmingham | £25 | £197 |
| Granny Annexe near West Bromwich | £25 | £195 |
| Granny Annexe near Oldbury | £25 | £196 |
| Granny Annexe near Sandwell | £25 | £196 |
| Granny Annexe near Rowley Regis | £25 | £196 |
| Granny Annexe near Wednesbury | £25 | £194 |
| Granny Annexe near Tipton | £25 | £196 |
| Granny Annexe near Halesowen | £25 | £198 |
| Granny Annexe near Walsall | £25 | £195 |