Camper trailer being towed by pickup truck

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 Department of Revenue DMV warns of impersonating scam messages!
The Colorado DMV does not send unsolicited texts demanding payment or requesting personal information. Read more about the scams on the Colorado DMV website.

Trailers

Colorado law requires that all trailers be titled, registered and plated. To complete this process for the first time bring the following:

Trailers with documents from another state

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.

Homemade and Kit Trailers

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:

  • Length
  • Width
  • Weight
  • Value
  • Type of trailer
  • Receipts (for the kit or if parts or supplies were purchased to build the trailer)
  • The owner or builder must sign an affidavit listing the trailer’s dimensions and stating how the trailer was put together

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.

A trailer hauler in a grass field

Contact Us

Motor Vehicle Division

7:30 a.m. - 5 p.m.
Monday - Thursday
Closed Fridays

Motor Vehicle Homepage
Contact Us Form
Contáctenos - Formulario en línea

Phone: 303-413-7710
Fax: 303-413-7706

Locations

Boulder (Main Office):
1750 33rd Street
Boulder, CO 80301
Directions

Lafayette
1755 S. Public Road
Lafayette, CO 80026
Directions

Longmont
529 Coffman Street
Longmont, CO 80501
Directions

Mailing Address

1750 33rd Street, Suite 201
Boulder, CO 80301

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