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 M25?

Building a granny annexe ranges from £86,200 (M Taylor Brickwork based in BL9) to £86,664 (Wholesale Clothing based in M8), 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 M25 by posting a job with HaMuch. We will send it to extension builders in M25 who will be happy to help you.