Here is report of press conference in french - which appears more detailed - maybe was a handout at conference - ? http://smn-news.com/french-news.html

I would read it to say that Gibbs is making a clear distinction between rebuilding on private land and rebuilding on the beaches - which are public land. Maybe what he means is that what is built on beaches should be considered as temporary, pending decisions of the Collectivitie about the ultimate plan for the beaches. Businesses can rebuild on beaches but should not consider what they build permanent - it should be light and easily taken down. ?