Smart telling everyone that you're at least 1000+ miles away from your survival bunker most of the year. Safe room in house, etc... fine. Second, out of the way property that you actual use? Doomsday bunker in the sticks? survivalist jack off fantasy.
They tried stuff like this in the late 70s., Rogue River, Oregon was a big area for it, custom bunkers for the rich. Sometimes those bunkers come up for sale and they're usually wrecks - mold, rust, 50 year old appliances, burst pipes, snow damage.