Section 430 ILCS 115/6 - Alteration of mobile structures or modular dwelling units to which seals have been affixed(a) A unit of local government may regulate the location of the modular dwellings and mobile structures and their foundation, and the installation of the on-site utilities.(b) It is unlawful for any person to make any alteration of any mobile structure or modular dwelling unit to which a seal has been affixed if such alteration causes the mobile structure or modular dwelling unit to be in violation of the applicable code.Amended by P.A. 098-0959,§ 5, eff. 8/15/2014.