Answer:
Since it is unsecured, it is impossible to be a purchase loan or a refinance loan, since by definition both of those would be secured by a dwelling. That leaves only Home Improvement. For an unsecured loan, it would only be reportable as a Home Improvement loan if your institution classifies the loan as a Home Improvement loan. If you classify it simply as an unsecured consumer loan, then no, it would not be HMDA reportable.