All mobile homes, modular homes and factory built homes as defined in the Iowa Code located outside a mobile home park shall comply with all Ordinances relating to residences or homes in the community and shall be affixed to a permanent perimeter foundation unless it is incompatible with the structural design of the home. Any home located outside a mobile home park on the date this ordinance takes effect shall be exempt from the permanent foundation requirement.
(Code of Iowa, Sec. 435.26)