The homes right on the beach where I’m staying sell in the millions of dollars, and they are quite beautiful. All of them have strong seawalls against the encroaching surf.
On Thursday morning we had an especially high tide, strong wind, and very heavy surf. The water reached the point where you see seaweed, which is to say within a few feet of the sea wall.
All things being equal, I’d never bet against a powerful high tide — seawall or no.