Plumbing Contractor Information

Colorado.gov

In order to perform plumbing contracting in the State of Colorado, you must submit a completed Colorado Plumbing Contractor application, pay the current registration fee, and meet the following criteria:

You must either be or employ a Colorado licensed master plumber who is a full-time employee and is the responsible party for all plumbing work done by the company. The master plumber must sign an Acknowledgment of Responsibility and can only be the responsible party for one company.
You must submit evidence that you comply with the Worker's Compensation and Unemployment Compensation laws (Office of Unemployment Insurance - http://www.coworkforce.com/uib/, Division of Worker's Compensation - http://www.coworkforce.com/dwc/).
Out-of-state corporations are required to obtain an Authority to Conduct Business in the State of Colorado from the Colorado Secretary of State's office (phone 303-894-2200). Limited Liability Partnerships should also contact the Secretary of State's office.

For local requirements, contact the city and/or county government in the area you work.

First time business owners may wish to contact the Colorado Business Assistance Center at (303) 592-5920.