[Baz]

Any building built in any area susceptible to flooding should be built on stilts, IMHO.

Use the bottom floor for parking only.

Everything else starts at the first floor - which gives you a default head start of 10-12' against storm surge/flooding.

Anything in the first floor "parking area" is mobile and can be re-located inland or to higher ground.

The fact that this isn't being done demonstrates how utterly ignorant we are as a society.

In my humble opinion.