To qualify for approval as a designated fee appraiser, an applicant must show to the satisfaction of the Secretary that his or her character, experience, and the type of work in which he or she has had experience for at least 5 years qualifies the applicant to competently appraise and value within a prescribed area the type of property to which the approval relates.
38 C.F.R. §36.4342
Authority 38 U.S.C. 3703(c)(1) , 3731