From most of the responses (and totally disregarding FHA), I do now finally see the purpose of demonstration appraisal reports done for designations where you are forced to do pages and pages of explanation for your Highest & Best Use, as vacant, as improved, the ideal improvement, etc. I did different kinds of properties for 3 different designations that were graded by ASA, CAE, and MAI appraisers. It does help having to examine H & B use from every angle, even when the solution should be obvious.