If it keeps getting hotter and the storms keep getting worse, we will find out. At the very least, property prices anywhere still liveable will likely become even more unaffordable.
OTOH, so have the single-story cinder block houses(the three in the middle and top left) from the 50s. Slap a new roof on and scrub it out, good to go. The stick houses are total losses. Apparently no one read The Three Little Pigs.
South Florida is full of these small cinder block houses because everything else gets wrecked and these survive. Sure, they might need some new roof sections, and maybe the drywall cut 4ft from the floor, but porcelain tiles on a concrete slab with cinder block walls is going to last until the rebar rots.
There's a house that just went up I saw which meets the recent Florida keys codes, and it is a goddamned fortress. It's on a lot that is raised 4 ft, the house is made of concrete and sits on 15+ ft concrete pilings, ceramic roof, and high impact windows all around. https://www.zillow.com/homedetails/374-Mahogany-Dr-Key-Largo-FL-33037/104218949_zpid/