Lee, you may find this in the UCC, but not sure.
How we look at it is how it's being taxed. If it is being taxed separately then we of course treat it as personal and titled property. If it's included with the land assessment then we consider it a fixture. We always require a copy of the tax statement to see how it is being taxed.
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The opinions expressed are mine and they are not to be taken as legal advice.