I see tiny houses as a creation of television. I don't think there is any great national migration into these things. You are about as likely to walk into your neighborhood swamp and find people who are "naked and afraid" as you are to find actual functioning neighborhoods of these tiny houses. Jerry Springer proved people would do anything to get on TV, and the tiny house shows prove things haven't changed. And no, they are not considered RVs, to do so would be insulting to real RVs.