Colorado law requires that motorcycles, RVs, motor homes, and trailers be registered just like other motor vehicles. Documentation and other requirements may vary as listed below.
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.
How to Register Motorcycles, RVs, and Trailers
Motorcycle Registration
- Motorcycles do not require an emissions test and fees and taxes are likely to be less than a typical automobile.
- Low-power scooters must be registered directly with the state.
- Dirt bikes (or off-road bikes) are not considered motor vehicles by the state, but still need to be registered with Colorado Parks and Recreation.
RVs and Motor Homes
- Taxes and Fees for motor homes and RVs are likely to cost more due to the heavier weight of these vehicles.
- A weight slip will be required for out-of-state vehicles if the empty weight is over 4,500 pounds and is not listed on the title.
Trailer Registration
- Late fees apply upon expired registration and if new purchases are not registered within 60 days of purchase. Late fees are $10 for trailers less than 16,000 lbs. Trailers in excess of 16,000 lbs. have a late fee of $25/month, not to exceed $100.
- Trailers from Colorado: Visit one of our offices and bring Secure & Verifiable ID, the Colorado title, and paperwork if purchased from a Colorado dealer.
- Out-of-State or homemade/kit trailers: Yes! You likely can register your homemade/kit trailer or trailer purchased in another state. Visit our Trailer page for requirements and registration instructions.