Section 458.18 - Maintenance of records(1) Unless a longer period of retention is required under sub. (2), a certified appraiser or licensed appraiser shall retain for at least 5 years the originals or true copies of each contract for the employment of the appraiser's professional services, each appraisal report prepared by the appraiser and all other records that, in the opinion of the appraiser, are material to each appraisal report prepared by the appraiser. The period of retention required under this subsection begins on the date on which the appraiser submits the appraisal report to the person for whom the appraisal report is prepared.(2) A certified appraiser or licensed appraiser shall retain the records described in sub. (1) for at least 2 years after the termination of any litigation related to the transaction for which the appraisal report was prepared.(3) A certified appraiser or licensed appraiser shall, upon reasonable notice, make the records described in sub. (1) available for inspection and copying by the department or the board.1989 a. 340; 1991 a. 39, 78.