Building Code Guide 96-11: Cargo Containers

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Source: Building Code Guide 96-11: Cargo Containers ↗ Last modified: Sun, 19 Apr 2026 20:06:33 GMT

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BCG 96-11: Cargo Containers

QUESTION: Can cargo containers be installed on properties and used as accessory storage structures?

RESPONSE: Yes, under certain conditions, cargo containers may be used in residential, multi-family residential, commercial, and industrial zones as accessory storage structures. Under the provision of this Code Guide, semi-truck trailers are not considered cargo containers.

I. Conditions for Using Cargo Containers as Storage Structures

1. Criteria for Installation of Cargo Containers. The PP&D Director will approve the installation of cargo containers using the provisions of this Code Guide provided the containers meet the following criteria:

   1. Containers are used as storage only;
   2. Containers are not used as shops, studios, hobby rooms, offices, lunch rooms, sales areas, playhouses, or other similar uses;
   3. Containers are not used for storage of motorized passenger vehicles;
   4. Containers are not stacked on top of each other;
   5. Containers are not classified as a High-Hazard Group H occupancy; or
   6. Containers are not equipped with plumbing or electrical power or lighting.

   Cargo containers not meeting the criteria above must meet all applicable requirements of the Zoning Code and Building Code for a site-built structure.

2. Occupancy Classification. Cargo containers shall be classified as follows:

   1. Containers used accessory to one or two family dwellings: Group U occupancies.
   2. Containers used accessory to commercial facilities: Group S, Division 1 occupancies.

3. Zoning Code. Containers must meet all applicable use and development regulations of the Zoning Code. For example, use regulations may prohibit storage containers from being leased or used as self-service storage. Development regulations such as building setbacks, building coverage limits, or special overlay zones, may affect if or where a container can be placed on a site. For more information, call 503-823-7300.

4. Stormwater Management. Containers that are used to store certain materials, such as solid waste or liquids, may trigger source controls. Please contact the Bureau of Environmental Services for more information at 503-823-7740.