As used in this article, the term:
Such term shall not include closed-loop transactions.
For purposes of determining ultimate equitable ownership by an individual, the individual's interest shall be aggregated with the interest of any other immediate family member, including the individual's spouse, parents, children, siblings, mothers- and fathers-in-law, sons- and daughters-in-law, brothers- and sisters-in-law, and any other individual who shares such individual's home.
OCGA § 7-1-680