Cote sauvage

Hi all, this is my first post on the site, which i have found very informative indeed. My wife and i are in the early stages of planning to come and live in France, after visiting many times on holiday over 18 or so years. We would be looking to buy a house to renovate with some land. Would there be any planning conditions with regards to living in a caravan whilst renovation took place? I have searched on the internet but have not been able to find anything of use. Many thanks in advance for any help/ advice on the matter. Regards Steven