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Camper trailer being towed by pickup truck

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

  • Secure and Verifiable ID
  • Colorado title (NOTE: see below if the trailer has documents from a state other than Colorado)*
  • Paperwork if purchased from a Colorado dealer

*Trailers with documents from another state

Contact the office for information on titling and registering a trailer from out of state or a trailer purchased from an out-of-state dealer:

  • Phone: 303-413-7710
  • Email

Homemade & 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:

Trailer hauler

  • 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.

Contact Us

Motor Vehicle Division

**New as of Jan 4, 2021**
7:30 a.m. – 5:00 p.m. Mon-Thurs.
CLOSED Fridays
Online Contact Form
Contáctenos - Formulario en línea

Phone: 303-413-7710

Fax: 303-413-7725 (Boulder office)
Fax: 303-413-7002 (Lafayette office)
Fax: 303-678-6126 (Longmont office)


Boulder: 1750 33rd Street
Map & Directions

Longmont: 529 Coffman Street
Map & Directions

Lafayette: 1376 Miners Drive
Map & Directions

Mailing Address

1750 33rd Street, Suite 100
Boulder, CO 80301