We are planning to put some sort of tiny-ish house (AKA 'Auxillary Housing Unit') on our property for my mom who is in her mid-80's and currently living independently 1000 miles away from us. She is in reasonable health, just unable to manage property/house upkeep on her own anymore. We designed our house and property with the idea of aging in place, with lots of focus on developing out zone 1. However, making plans for my mom has made me realize that we have not taken into account all exigencies, specifically the possibility of deteriorating health/debilitation. We are childless (another lack of foresight?) One of my grandmothers died with advanced Alzheimer's; my parents tried to take care of her for years until it got to be too much. I fully expect to be institutionalized myself if I develop that condition.
Co-housing is looking more appealing, particularly something along the lines of Elderberry:
http://www.elderberrycohousing.com/ My research is showing lots of people
planning rural co-housing communities, but not many achieving it. So it looks as though we would need to start
now, in our early 60's, to find kindred souls of
all ages who would be interested in setting up a permaculture-based co-housing community. My concern with moving into a city co-housing community with access to medical care, etc. (husband's preference) is that I really believe there is going to be some sort of social upheaval around unaddressed climate change 10 -15 years from now and suspect the ability to grow one's own food will be increasingly important.
Alternatively, we could move into the structure we build for my mom when the time comes, and rent our house out to a younger couple who would willing to take us into town to dr.'s appointments from time to time, help harvest firewood, etc. If we could get around the septic requirements, we could set up a small co-housing community here on our land, which would be ideal.
So much to think about! Never thought I'd get old enough to worry about this stuff.