The regulations for placing shipping containers vary across the state but you generally need to satisfy building codes to have a container for any length of time on your premises.

For residential use the building code generally requires you to 'hide' its appearance as a shipping container by having them painted or reclad, otherwise kept from public view.  Some councils specify the maximum number of containers allowed.  Port Headland, for example, only allows one container per residential property so it might be worth considering the : 2x10' container set to maximise modularity.  Commercial & industrial zones have a greater allowance depending on how they are stacked, their size and their position on the property.  These are some of the things you should keep in mend before you call your local council to find out the zone rules for your area.

What building codes are in place in WA for the use of containers?