Why does a building inspector care about a shipping container's data plate?
NationwideReviewed October 2026
The data plate is how an inspector confirms what the container originally was and how much load it was rated to carry. Under IBC Section 3115, containers used as buildings need a data plate with items such as the manufacturer, date of manufacture, safety approval number, identification number, maximum operating gross mass, allowable stacking load and racking test force. Structural engineers have noted that a code official can reasonably rely on that plate to confirm the container was built and inspected to the ISO standard. If a container has been heavily cut or modified, the original ratings may no longer apply, which is why the code calls for structural design. Keep any data plate and paperwork with your permit records.
Check your local rule. This varies by state, county or city. Your permitting office has the final word; the official lookup pages below show you who that is.