Fla has alot of strict rules about homes.. what you can get away with just about everywhere else in Amerika don't fly down here.Florida has strict rules about garage doors. In a hurricane it is common for the garage door to fail, then when wind gets inside the whole house blows apart.
most houses are CBS and stuccoed..
roof securement is heavy duty.
roof covering may be tile or steel instead of shingles as you go upscale on your wind protection,one thing you dont want is those old 3 tab shingles, those things fly off the house like 1000 frisbees..
windows will be minimum impact resistant or the higher Miami Dade code.. much like Bank windows... I think they can stop a 2x4 moving 140 mph...
hurricane rated garage doors
hurricane rated exterior doors.
bunch of other stuff.
then depends on where they are building what the local costs such as impact fees, inspection, water and electric hookup etc.. are.