One of the first things you will want to determine if this assignment falls under the definition of appraisal consulting or is simply a valuation service that falls under the more generic heading of "consulting." If this assignment "involves an opinion of value but does not have an appraisal or appraisal review as it's primary purpose" it's appraisal consulting and specific performance standards are involved under USPAP. If not, then it's likely a valuation service with no specific performance standards, but Ethics and Competency still apply.
Of an appraisal consulting assignment or a general consulting assignment?Can you whip up some examples?