In this country (UK), stamp duty land (the tax you pay when you buy a new house) is higher if you are buying a house that won't be your main residence, so taxin

In this country (UK), stamp duty land (the tax you pay when you buy a new house) is higher if you are buying a house that won't be your main residence, so taxing vacant homes is, in principle, a workable tax policy. I'm sure there would be people that would try to work around the system, same as with every other law.