I don't think anyone can give you an exact answer to your question with out knowing more.
If this is consumer purpose I agree it's a purchase.
If it's a commercial purpose and the intention is to sell the newly constructed home, it's not reportable. If they plan to keep it and rent it out or something, then I'd report as a purchase.
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My opinion only. Not legal advice.
Say you'll haunt me - Stone Sour