Boulder County Assessor’s Office will be closed Thursday, Nov. 30. The offices will reopen Monday, Dec. 4.

New Resident Registrations
neighborhood with mountains in backdrop

Appointments now required for in-person visits. Additionally, registration renewals need to be completed out of office. Options include online, by mail or drop box, or at a self-service kiosk. Read about these changes (including benefits, and FAQs). Información en español.

New Resident Registrations

New Colorado residents are required to register a vehicle within 90 days of establishing residency. Vehicles must be registered in the county that you reside. If vehicles are not registered within 90 days of establishing residency, late fees accumulate at $25 per month up to $100. Once you have gathered all of the items on the checklist below, you will need to visit one of our offices to register your vehicle. Click here to make an appointment.

Definition of Colorado Resident

  • Any person who owns or operates any business in the State of Colorado
  • Any person who has resided within the State of Colorado continuously for 90 days
  • Any person who has obtained gainful employment within the State of Colorado

Registration Checklist

Provide the following to register a vehicle with an out-of-state title:

Estimated Fees

Registration fees cannot be estimated over the phone or by email. Estimates may be obtained online.

License Plate Information

Colorado issues license plates for a 12-month period. Renew your registration during either the:

  • One month prior to expiration month, or
  • Month indicated on the registration, or
  • Following month, known as the one month grace period

Late Fees

Colorado law requires residents to pay late fees. Late fees may not exceed $100. Temporary permits are not subject to a one-month grace period (C.R.S. 42-3-112, 42-3-114).

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: 1755 S. Public Road
Map & Directions

Mailing Address

1750 33rd Street, Suite 100
Boulder, CO 80301