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 HP3?

Building a granny annexe ranges from £85,080 (Hertfordshire brickwork based in Hp1) to £87,000 (Evolved Glazing Solutions Limited based in HP3), 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 HP3 by posting a job with HaMuch. We will send it to extension builders in HP3 who will be happy to help you.