The website for a National Geographic show called Doomsday Preppers provides a lot of potentially useful material. The shelter section talks about how a survivalist would select a location for their compound, and other sections talk about security, food supplies, and so on. While I couldn't find any plans, the episode Taking from the Haves looks like it may do a good job of describing the mentality of a survivalist, how one goes about planning a compound, and some of the details of a home that is also a compound.
Survival compounds are on the rise among the wealthiest of the wealthy. A 2017 New Yorker article goes into detail about why, where, and how some surprisingly sophisticated survival compounds are being created to cater to successful and fearful denizens of Wall Street and Silicon Valley.
A 2017 article in The Atlantic about luxury doomsday bunkers provides a map and a floorplan.
One thing that comes through in both of these articles is that this sort of thing is on the rise, and those building and buying survival bunkers believe it's possible to ride out the chaos in luxury.
It's easy to imagine a scenario in which a multimillionaire loses control of his bunker to someone better suited to the end of the world. Perhaps his security chief takes over, or a cunning outsider connives his way in and assumes control.