Why? Because apparently they need some more incentive to keep units occupied. Also, even though a property might be vacant, there’s still imputed rental income there. Its owner is just receiving it in the form of enjoying the unit for himself instead of receiving an actual rent check from a tenant. That imputed rent ought to be taxed like any other income.
I disagree. Land value taxes are flat unlike a progressive income taxes. Therefore, a land value tax can be unfairly burdensome to people with low incomes who happen to own land. If imputed rent is taxed as income, then the tax burden is more fairly shared. It also creates more insentive to keep rents low and units occupied.