If the loan is unsecured then it is not HMDA reportable.
The definition of a HI is:
Home improvement loan. A home improvement loan is (a) any dwelling-secured loan to be used, at least in part, for repairing, rehabilitating, remodeling, or improving a dwelling or the real property on which the dwelling is located, and (b) any loan not secured by a lien on a dwelling (i) that is to be used, at least in part, for one or more of those purposes and (ii) that is classified as a home improvement loan by the institution.For home improvement loans you report the property that is being improved.