Among the people I have no sympathy for....
How does anyone think building a house on stilts in the ocean is a good idea?
Can you even insure something so foolish?
Last time that happened they were explaining that when the homes were built they were 2-300 yards farther from the water.
That said, if they go down they need to stay down, no rebuilding in the same spot.
I wonder about the Malibu coast out in CA. They have long had a law that allowed only renovations, not new construction. (not that the law was not bent over double often, demo to floor and 1 wall) The big fire they had out there completely wiped out many homes, will they be allowed to rebuild?