There are many properties in Alaska where there are existing structures that are just that - structures which must be dealt with. I would suggest that since the structure is no longer being used as a living space, you convert it to what it is - a storage space, or remove it. One way to remove it, is to sell it (it is modular) for the cost of removal.
I can put you in contact with a reasonable building mover who may or may not be interested in this project.
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Our recommendationis to not base this on only the opinion of one individual. Check other resources for their interpretation of this. Another possibility, eventhough remote, is to request the seller to restore the property to be liveable of or remove it.