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 Portsmouth?

Building a granny annexe ranges from £86,600 (Build Light Group based in PO3) to £87,000 (SBS Building Services based in PO12), 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 Portsmouth by posting a job with HaMuch. We will send it to extension builders in Portsmouth who will be happy to help you.