Oakland fires long ago a guy built his home from limestone and metal etc ... but built a round silo sort of limestone tower on his property that had a 3000 or 20,000 gal water storage tank in the center with pumps and generators inside connected to a satellite phone controller.
Also had his in ground swimming pool plumbed as a reserve source of water for his well thought out redneck engineered system .
He had landscaped his property to keep fuel for wildfires away . As the fires approached he made the call to his “off grid” wildfire system and it was the lone structure that survived in that area.
Was impressed ......
Dang it that’s being Prepared ! I like it.
My Brother built His House underground. 10” thick concrete walls and Double T’s for the roof beams (like used on Highway a Overpasses) If You don’t know where the door is You won’t find it. Most that come looking for it/Him end up parking on top of it. And never know. Got a Tool Shed and a CarBoatport above ground. And the old Outhouse.