Future Proofing (is this a solution?)

I dont want to hijack the other threads, but someone mentioned that they would stay put in their current house and “moth ball” the upstairs. I would like a bungalow, but to stay in our current location, we would be priced out of the market. We have enough space downstairs to use a room as a bedroom, we even have the necessary place to install a lift. To purchase a new bungalow (we dont want to do a refurb) would mean perhaps a move more than 60 miles away from our little family (might see more of them if we lived at the coast rather than the current half hour lol). I need to get this should move/dont move out of my head and would love some constructive ideas/comments please.