> vacancy tax

Renting out places and making them rentable isn't an easy task. It takes money, time, effort and patience that people don't always have. It also ignores lawsuits, issues with the house that you don't know of and millions of other things.

If people are leaving a rentable place that can make them money empty, there's probably a real good reason for it. This is coming from someone who had all kinds of issues with mortgage companies, repairmen and bad tenants.