CTBL is located at 180 Sheridan Blvd, Denver, CO 80226-8101
We are on the east side of Sheridan Blvd between 1st and 2nd, which is South of 6th Ave and North of West Alameda Ave on the border of Denver and Lakewood.

• We have a big parking lot in front that you can't miss.
• For personal driving directions to CTBL, please visit mapquest.
• For a bus route to bring you to CTBL, please visit RTD.
• Additional information on traveling to CTBL: Public Transportation PDF

Phone:

• Metro Denver: 303-727-9277
• Toll Free: 800-685-2136
• Fax: 303-727-9281

Email: ctbl.info@cde.state.co.us

Hours:

• Building: Monday - Friday 9 am - 4 pm
• Phone: Monday - Friday 8 am - Noon and 12:30 - 4:30 pm