There are regulations for the temporary or permanent placement of cargo containers in/for each City. Cargo containers generally are only allowed on residential properties with a building permit for onsite construction. Cargo containers may be allowed on commercial or industrial properties on a temporary or permanent basis, provided that they are screened and not placed on required parking, driveways, or landscaped areas. Contact the Planning Division at each city for complete requirements. Check in with the County Bldg. at 800 Victoria Avenue for direction as well. I would imagine issues such as ventilation, utility access, stability and visibility are just a few of the challenges with this type of alternative housing. Good luck!