What you describes sounds like it would be a covered loan based on the following:
1. General. Section 1003.3(c)(10) provides a special rule for reporting a closed-end mortgage loan or an open-end line of credit that is or will be made primarily for a business or commercial purpose. If an institution determines that a closed-end mortgage loan or an open-end line of credit primarily is for a business or commercial purpose, then the loan or line of credit is a covered loan only if it is a home improvement loan under § 1003.2(i), a home purchase loan under § 1003.2(j), or a refinancing under § 1003.2(p) and no other exclusion applies. Section 1003.3(c)(10) does not categorically exclude all business- or commercial-purpose loans and lines of credit from coverage.
2(j) Home Purchase Loan
1. Multiple properties. A home purchase loan includes a closed-end mortgage loan or an open-end line of credit secured by one dwelling and used to purchase another dwelling. For example, if a person obtains a home-equity loan or a reverse mortgage secured by dwelling A to purchase dwelling B, the home-equity loan or the reverse mortgage is a home purchase loan under § 1003.2(j).
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