> preventing the sort of cheap low quality development that makes sense in areas where it's a given that nature will flatten everything every 50yr or whatever.
What kind of low quality development makes sense when you know it's only going to be washed away into the ocean at some random point within the next 50 years? Who is going to live in a place like that? What happens to them when they lose everything?
Florida existed this way for 100 yr. You have lots that had a house built in 1850, wiped out in 1900, rebuilt, wiped out in 1950, replaced with a double wide, wiped out in 2000, and then the owner gets told "sorry, build a multi million dollar house on stilts with windows rated to stop a flying patio chair and a roof you could dangle the house from or F-off"
I understand that there's a desire to stop sketchy interests from billing off "disposable" construction as "this will resist a hurricane and is prob good for 100yr" and pocketing the difference before vanishing (especially among the HN crowd because they're demographics who usually get left holding the bag) but it's not economically tenable to force communities to construct above their means either by law or by proxy with provisions written into insurance and lending requirements.
Those parts of New Orleans that never bounced back are just the denser more vertical versions of those poor Florida communities. There just isn't the money there. And while you can potentially cover this with state and federal programs (e.g. FEMA), it seems like in practice they don't quite bridge the gap.