Formal Ruling 1993-02

Evidence of year-round habitability includes insulation or weatherization, a heating system, plumbing, and running water. Whether a property is fit for year-round habitation is not dependent on how owners have decided to use it in the past or how they will decide to use it in the future, but rather on what it can be used for at the time of transfer. A property’s permitted use is not a determining factor to demonstrate year-round habitability.