Michigan Compiled Laws, Chapter 211. Taxation of Real and Personal Property § 211.22a

Sec. 22a. (1) The state tax commission, upon presentation by representatives of county tax or equalization departments, townships and cities, of satisfactory evidence of education, experience, or by passage of a test conducted by the commission, shall certify a successful applicant as a qualified personal property examiner. A certified personal property examiner may examine only the property or the cost records relating to such property of any corporation, firm, or individual liable to assessment within their county, township or city for property taxes under this act.

(2) Upon written request of a city, village or township assessing officer to examine the property or books of any corporation, firm, or individual, a certified personal property examiner of the county tax or equalization department shall conduct the examination. Where there is no certified personal property examiner in the county equalization department, the examination shall be made by a representative of the state tax commission at the expense of the city, village or township.

(3) Where any corporation, firm or individual is subject to personal property assessment in more than 3 counties of the state then the corporation, firm or individual may request an examination be made at their expense by a representative of the state tax commission at a rate of 1/10 of 1 mill of the gross value of the personal property of said corporation, firm or individual under examination.