New Trailer and Off-Highway Vehicle (OHV) Report of Sale. Here is a master list of the Building Division's bulletins and forms.Register your car or truck from out of state in California in minutes. 1. Gather required information about the seller, buyer, and trailer. Bill of Sale (REG 135); Verification of Vehicle (REG 31). If you're unsure which forms are required, our Smog Hut Star Station team can help.