Stage 2 Fire Restrictions Enacted for Western Boulder County; Stage 1 Fire Restrictions Enacted for Eastern Boulder County.

Vehicle Registrations

Boulder County Motor Vehicle offices are open Monday – Thursday, 7:30 a.m. – 5 p.m. Offices are closed on Fridays. Appointments are required for in-person services. Registration renewals must be completed online, by mail or drop box, or at a self-service kiosk. Renewals are not an in-person service.

Vehicle Registration

A motorcycle and rider are on a dirt road in the mountains. Fluffy clouds are in a blue sky.

Motorcycles, RVs and Trailers

Motorcycles, motor homes, and trailers may have special rules for registration.

Car keys with a red ribbon tied around them like the keys are a gift are on a table.

Gifted or Inherited Vehicle

If you get a vehicle as a gift or through a will or estate, special registration rules apply.

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Military Personnel Vehicles

Thank you for your service! Learn how to register and renew your vehicle in Colorado or when serving out of state.

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Special Mobile Military (SMM)

SMM must be registered at one of our offices if it will be used in Boulder County for more than 11 months.

Joint Ownership

If you plan to share ownership of a vehicle, apply for Joint Tenancy with Rights of Survivorship. This keeps your vehicle out of probate court (a legal process after a death) if one owner dies.

Registration Checklists

New to Colorado or just bought a car or truck? Use these checklists to get started.

More Resources

Want to know what it will cost to register your vehicle? Estimate your fees online. Enter the original sticker price (MSRP) — this is usually different from what you paid. We cannot give fee estimates by phone or email.

Appointments for vehicle registration are available at three offices – Boulder, Lafayette, or Longmont – from 7:30 a.m. – 4:30 p.m.

Temporary permits are good for 60 days from the date of purchase. This allows time for title paperwork to be completed and for the vehicle to have an emissions test, if required.

When you buy a vehicle from a dealership, they will issue a temporary permit. If you buy from a private party, you may visit one of our offices to request a temporary permit.

If a Colorado vehicle registration is lost or destroyed, you can replace it for a $4 fee. You can apply online, in person, or by mail.

To apply online or in person, you will need:

To apply by mail, you will need:

If you don’t know your license plate number, also include:

  • Your vehicle’s model year
  • Your vehicle’s make
  • Your vehicle identification number (VIN)

You can request replacement tabs (stickers) for your vehicle online. You will need:

  • Your license plate number
  • Your vehicle identification number (VIN) or Verification Code (from registration card)
  • A valid credit card or check to pay any fees

Learn more about how your vehicle registration fees and taxes are calculated on our Fees and Taxes page.

Vehicle identification number (VIN) inspections are required for the following:

  • New residents
  • Newly purchased vehicles with out-of-state titles
  • Title corrections

Our offices offer VIN inspections for a $25 fee. Find other certified VIN inspectors, locations, and hours.

If you are registering a heavy vehicle, you may need a certified weight slip. This document shows your vehicle’s weight.

A weight slip is required if:

  • Your vehicle has been modified by more than 300 pounds, and the new weight isn’t listed on the title
  • You are registering a used bus in Colorado for the first time
  • You are converting a vehicle into a motor home
  • You want to update the current weight on an existing title
  • A certified VIN inspector determines one is required

Contact our office if you have questions about your specific situation.

Many private companies can weigh your vehicle and provide a certified weight slip. For example, Pioneer Sand will do this and has locations in Boulder, Longmont, and Broomfield. If you are registering a motor home, bus, or trailer, you can also call our office first. Staff may be able to look up your vehicle’s weight for you.

Farm trucks require a special registration application. Farm trucks must:

  • Be registered to land that is zoned as agricultural for property tax purposes
  • Only be used for agricultural purposes

Farm trucks are exempt from emissions requirements.

Vehicles assembled from a kit have special titling and registration requirements. Please contact our office for instructions.

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

Office / 24-Hour Drop Box Locations

If submitting paperwork via drop box, please place documents in a folder or envelope marked “Motor Vehicle” and include your contact information.

1750 33rd St., Boulder
24-Hour Drop Box: Stand-alone box outside doors on parking lot side

1755 S. Public Road, Lafayette
24-Hour Drop Box: Slot on exterior wall to the right of the main doors

529 Coffman St., Longmont
24-Hour Drop Box: Stand-alone box outside entrance doors

Mailing Address

1750 33rd St., Suite 100
Boulder, CO 80301

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