The trailers are classified as a utility trailer but depending on the state you live in there are different rules for plating them. In Oregon, for example, it is not required but California and Washington do require it.  When you purchase a trailer from us we send you an MSO which is a manufacturer's certificate that allows you to get it registered at the DMV.  Typically, you take that along with a copy of your invoice down and the DMV will give you information on next steps.