Trailers

Visit a Motor Vehicle Division office to title and register a trailer (required by Colorado law).

Provide the following to register a trailer:

Out-of-State Trailers

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 and Kit Trailers

Applying for a trailer identification number for a homemade or kit trailer is required.

Visit a Motor Vehicle Division office to complete the application. Provide the following information for the trailer:

  • Length
  • Width
  • Weight
  • Value
  • Type of trailer
  • Receipts if parts or supplies were purchased to build the trailer

The builder must sign an affidavit stating how the trailer was built.

An identification number on a metal plate will be assigned after the application is completed. Attach the plate to the front, right corner of the frame or nearest metal part.

  • $3.50 fee for the metal plate

Contacts

Motor Vehicle Division

303-413-7710
303-413-7725 (fax)
Email
Hours: 8 a.m.-4:30 p.m. M-F

Locations

Boulder: 1750 33rd Street
Map and directions
Longmont: 529 Coffman Street
Map and directions
Louisville: 722 Main Street
Map and directions

Mailing Address

1750 33rd Street, Suite 100
Boulder, CO 80301

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