However, such use as of the date of appraisal is not legally permissible, thus failing the first test of highest and best use, UNLESS, you appraise the property under the hypothetical condition it is zone commercially. Such zone requests are not automatic and neighbors have a tendency to protest such zone changes thus there is some risk associated with appraising the subject under the hypothetical condition the zoning is commercial.
Hypothetical conditions are not allowed under Fannie guidelines unless they pertain to proposed improvements.
These items certainly affect the scope of work greatly and should be considered carefully.