I suggest you consult with a local attorney who is well-versed in real estate and consumer protection law. Under the Consumer Sales Practices Act, a supplier who engages in a commercial transaction with a consumer must not commit an unfair, deceptive, misleading, or unconscionable act in connection with that transaction. An attorney may help you reach a resolution whereby the contractor would pay for the removal and re-installation, should that be what your neighbor desires.
Disclaimer: This does not constitute legal advice. No attorney-client relationship has been formed through this answer.
This is not a question for the "Divorce" category. I would suggest you re-categorize it as a "real estate" question or a "consumer sales" issue.
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