Answer:
If the borrower is an individual and any portion of the collateral is real estate (read: dirt), the interest is reportable.
As you note, generally the interest on a lot loan would not be deductible, but the rules on reportability and deductibility do not mesh. For example, interest paid on a motor home may be deductible as a residence or vacation home, but it is not reportable.
For assurance, take a look at the 1098 instructions on the IRS Web Site: http://www.irs.ustreas.gov/forms_pubs/index.html
First published on BankersOnline.com 11/5/01