When Bernard Jones Jr. and his wife, Doris, built their dream home, they didn’t hold back. A grotto swimming pool with a waterfall for hot summer days. A home theatre for cozy winter nights. A fruit orchard to harvest in fall. And a vast underground bunker in case disaster strikes.

“The world’s not becoming a safer place,” he said. “We wanted to be prepared.”

Under a nondescript metal hatch near the private basketball court, there’s a hidden staircase that leads down into rooms with beds for about 25 people, bathrooms and two kitchens, all backed by a self-sufficient energy source.