Sand Dancer
Currently catless
Those are still pretty rare. About the only examples I can think of are people setting up tiny homes on very small plots of land with some shared utilities sort of like in a mobile home park, but with some land ownership. The idea being that people who are not wealthy can live safely and well in a like-minded community by living 'small'. Those tend to be in the south because of the climate, and because of less government interference. I have also known groups of artists to pool their money and buy old abandoned factory buildings in the city to convert to live-work art studios, but that was before the developers realized there was a pile of money to be made converting those buildings into hipster "lofts" for the yuppies.
Again, one often finds themselves up against a pile of laws and ordinances put in place by for-profit developers and their cohorts in political office to stop the idea of any "self-made" intentional communities from happening. Money is control and control is money. It's how the mainstream operates.
If you already have lots of money, why bother with this idea? Just buy into a 'gated community' and you're set. Seems to me these are alternatives for people that aren't wealthy. Because no one wants to serve their needs these days. Every builder wants to build "McMansions" because that's where the big profits are. No one wants to build small, efficient, affordable homes for people that aren't rich.
Because some want to live below their means, tread lightly on the land and focus on important things. Some want community as they get older. I am happy that people are doing more than just consuming.