It is declared to be the public policy of this State, pursuant to paragraph (h) of Section 6 of Article VII of the Illinois Constitution of 1970, that any power or function set forth in this Act to be exercised by the State is an exclusive State power or function. Such power or function shall not be exercised concurrently, either directly or indirectly, by any unit of local government to which this Act applies, including home rule units, except as otherwise provided in this Act.
     The Department may adopt all rules necessary to implement this Act. Such rules shall provide for the Department to inspect manufactured home installations, require correction of violations, and perform other duties mandated by the United States Department of Housing and Urban Development pursuant to Section 3286.803 of Title 24 of the Code of Federal Regulations, 24 C.F.R. § 3286.803. The Department may require and approve non-governmental inspectors or inspection agencies, provided the Department shall at all times exercise supervisory control over such inspectors or agencies to insure effective and uniform enforcement consistent with the rules adopted by the Department.