Stay and modify
Best when the house is fundamentally sound and the difficulty is physical, not medical.
A single-storey Perth home on a reasonably flat block is usually easy to make work for the long haul. The bathroom is the big-ticket item, the entry is second, and everything after that is not such a large outlay, other than the kitchen if required.
It works less well if the house is two-storey with the only bathroom upstairs, or if the house is split over several levels or on a major sloping block.
