Boulder County Motor Vehicle offices are open Monday – Thursday, 7:30 a.m. – 5 p.m. Closed Fridays. Appointments are required for in-person services. Registration renewals need to be completed online, by mail or drop box, or at a self-service kiosk and are not an in-person service.
Colorado law requires that all trailers be titled, registered and plated. To complete this process for the first time bring the following:
Contact our office for information on titling and registering a trailer from out of state or a trailer purchased from an out-of-state dealer.
Applying for a trailer identification number for a homemade or kit trailer will require a Certified VIN Inspection by the State Highway Patrol in addition to providing the following documents and information as described below:
After this process is completed an identification number on a metal plate will be assigned for the trailer and must be attached to the front, right corner of the frame or nearest metal part.
