Custom built hurricane houses are expensive? I wasn't proposing them as a remedy for the masses.
Yet the need is vast, due to sea level rise and increasing population.
I used to live within walking distance of the State Farm Insurance Co Hurricane House. Enclosed eaves, rounded drops, smaller windows, strengthened exterior walls, solid doors and a raised foundation all contributed to a house that would handle high winds, debris and some flooding without costing much more than a conventional home. I believe it was used to develop the higher standard building codes enacted around 2005, so at least some of the elements became required for all new residential construction.
That said, it would absolutely not handle the extreme exposure to severe weather conditions of a beachfront property.