I don't believe Permitted Development rights are applicable in National ParksInteresting about changing flood zone maps.
We are just inside national park but I'm not looking at the argument that I need the house. It's a new permitted development came in Oct 1st for light industrial to residential. So I need to look into if this applies in national parks.
It's not the end of the world as if it's not an option I will refurb and continue to let as industrial units