Sec. 5. (a) As used in this chapter, "mortgage" means:
(1) a loan; or
(2) a consumer credit sale;
that is or will be used by the debtor primarily for personal, family, or household purposes and that is secured by a mortgage (or another equivalent consensual security interest) that constitutes a first lien on a dwelling or on residential real estate upon which a dwelling is constructed or intended to be constructed.
(b) The term does not include a land contract (as defined in IC 24-4.4-1-301(36)) or similar agreement in which the debtor does not possess a deed.