(A) It shall be unlawful for any person to keep, park, store, or maintain a mobile home in the city outside of a mobile home park which is duly licensed hereunder, except as herein specifically permitted.
(B) It shall be permissible hereunder for a bona fide guest of the householder to park a mobile home in the rear yard of any dwelling house for a period of time not to exceed 30 days in any one calendar year, provided, however, such mobile home may be used only for sleeping purposes during such 30-day period.
(C) A mobile home may be stored in the city regardless of the other provisions hereof, provided that it shall not be used for living or sleeping purposes during such time as it is so stored or parked, and providing moreover that it shall not be a nuisance and does not constitute a fire hazard, and if such mobile home is parked within a mobile home park, it shall be parked in such location as an occupied mobile home for a period not to exceed 30 days.
(D) No mobile home shall be maintained in the city as a permanent office. However, a mobile home may be used as a contractor's office on a construction site during periods of construction, provided that such mobile home is not used for living or sleeping purposes during such time.
(`79 Code, § 154.19) Penalty, see § 10.99