I have often wondered about the many RV parks around Mexico - especially in the Baja but other places such as the Yucatan as well - where RV owners have built palapas and even houses around RVs that have been there for many years and will never move again. We see these "houses" with for sale signs on them and have seen a few that are high priced. How do they get away with this under current laws? Even with a 10 year permit many of these places have exceeded the legal allowance. And these places are bought and sold regularly to/by "foreigners". I'm not intending to blow the whistle on anyone as everyone knows these places exist, including the Mexican authorities. What happens if they start to enforce any of the RV permits - be they 10 year or 6 months?