Agreed, but the open question is how to determine that a household is "vacant" (turns out it's harder than one imagines). I'm a big fan of the: if it's not reg

Agreed, but the open question is how to determine that a household is "vacant" (turns out it's harder than one imagines). I'm a big fan of the: if it's not registered as your primary address in tax filing documents it's treated as an investment property and is taxed as such. If no one has that address as a primary address then it's treated as investment + vacant.