That's sorta the way River Oaks in Houston worked back in the day. It was in their deed restrictions (or whatever there were called all those decades ago) that no blacks or Jews were allowed in the neighborhood. There's a lot of fascinating history there. Rich Jewish folk went off and built Riverside Terrace and rich black folks did the same in the MacGregor area. Those places didn't get the "only the rich allowed in here" vibe like River Oaks but they were just as swanky. Maybe more so; I've never seen a solid copper roof in River Oaks but I have off MacGregorOne creative avenue to explore is where you don't even own your house, the community, inc owns everything and you have a share in that combined with a life-estate:
Takeaway for this thread - If anybody gets really serious about all this, be cognizant of the fact that you're making history