I was discussing inheritances with my Mum and got to thinking about my Grandmothers house. She stills lives in the 3 bed house in which she raised her family and shows no signs of wanting to move. Despite a fairly new extension and kitchen my Mum doesn't think Nanas house will be worth much when the time comes. I know the market fluctuates but the next door house sold for over £500,000 only a few years ago so would assume Nanas would be worth a similar amount. Is this a fair assumption or do i not understand house valuations. I have never had sell a house myself so don't know the ins and outs.