Stage 1 Fire Restrictions, effective Aug. 12, 2025, for unincorporated western Boulder County.

Visit the Boulder County Ballot Measures website for information about possible 2025 ballot measures.

Emissions Extension Request

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.

Emissions Extension Request

If an emissions test is required for a vehicle that is temporarily out of state, you may apply online for an Emissions Extension. You may also apply by mail or in-person at one of our DMV branch locations. To apply, provide the following:

  • Complete the emissions extension form (DR 2376) in its entirety
  • Results of passing emissions test, if testing is performed in the state where the vehicle is located.*
  • Copy of current insurance
  • Renewal reminder postcard, if available
  • Registration payment by check or money order made out to Boulder County

* If emissions testing is not performed in the state where the vehicle is located, a VIN verification form (DR 2698) or an equivalent out-of-state form must be completed by either a local law enforcement officer or a motor vehicle employee from the state where the vehicle is currently located. Additionally, the vehicle must be emissions tested within 15 days of returning to Colorado.

You can return this form to a paperwork drop box at any of our locations, to our office via mail, or by email to motorvehicle@bouldercounty.gov. Once your application has been approved, you can renew online or at an MV Express kiosk.

Note: Before renewing online, you will need to change your mailing address to your out of state address before renewing your registration if you’d like the stickers and registration to be sent out of state.

Mail Address:
Boulder County Motor Vehicle Division
Attn: Emissions Extension Requests
1750 33rd Street, Suite 100
Boulder, CO 80301

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 (Directions)

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

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

Mailing Address

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

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