I have been trying to get a good grasp on how many people own second homes, and there seems to be some real uncertainty about this. About 6% of homes in the US are not the first deed to a home a person, or couple, owns. However, upwards of 40% of people report owning a second home. We aren't really sure what is going on here. Clearly 40% of the population do not own more than one home, and considering that the really wealthy often own 5+ houses, there is just no way. However that doesn't mean that there aren't some problems with the data collection on how many homes are owned by people on multiple deeds.

From what I have found seems the most thrown around estimate is somewhere around 7-8% of homes are owned by people who own other homes, and that group like makes up around 8-10% of the population. But who knows, there are many people who are on deeds, but don't truly own the home, and them being on it is a security/convenience measure. Bleh.