Ohio Revised Code Title XLVII. Occupations Professions § 4781.14

(A) The division of industrial compliance has exclusive authority to regulate manufactured home installers, the installation of manufactured housing, and manufactured housing foundations and support systems in this state. It is the intent of the general assembly to preempt municipal corporations and other political subdivisions from regulating and licensing manufactured housing installers and regulating and inspecting the installation of manufactured housing and manufactured housing foundations and support systems.

(B) The division has exclusive power to adopt rules of uniform application throughout the state governing installation of manufactured housing, the inspection of manufactured housing foundations and support systems, the inspection of the installation of manufactured housing, the training and licensing of manufactured housing installers, and the investigation of complaints concerning manufactured housing installers.

(C) The rules the division adopts pursuant to this chapter are the exclusive rules governing the installation of manufactured housing, the design, construction, and approval of foundations for manufactured housing, the licensure of manufactured home installers, and the fees charged for licensure of manufactured home installers. No political subdivision of the state or any department or agency of the state may establish any other standards governing the installation of manufactured housing, manufactured housing foundations and support systems, the licensure of manufactured housing installers, or fees charged for the licensure of manufactured housing installers.

(D) Nothing in this section limits the authority of the attorney general to enforce Chapter 1345. of the Revised Code or to take any action permitted by the Revised Code against manufactured housing installers, retailers, or manufacturers.