Skip navigation

How to Apply for a Certificate

Contractor licensing in Denver is a two-step process. An applicant must hold a supervisor certificate or employ a supervisor certificate holder before applying for a contractor license in a specific trade. The type of work you will do determines your certificate and license requirements. Categories listed below include journeyman, operator and stationary engineer certificates. 

Note: Holders of a state electrical or plumbing license can apply directly for a contractor license and do not need a supervisor certificate first. 

Denver does not accept or reciprocate contractor licenses and/or certificates from other counties or states. You must apply for a Denver license. 

License applications will not be accepted until supervisor certificates have been approved.

Use the links below to review the standards and requirements (including if passing an ICC exam is required) for the certificate you are applying for.

Each type of certificate must be reviewed and purchased separately.

Specialty D certificates do not require testing.

Steps to Apply for a Certificate

  • Complete the application.  
  • Include the specific title of the certificate you are applying for on the title line.  

NOTE:  Incomplete applications will not be accepted.

Notarized letters documenting current/recent minimum experience for the certificate you are applying for must be included in your application.  

  • Include letters from previous or present employers or customers or clients who have hired you to do the type of work the certificate pertains to. 
  • Do not submit letters from other officers / members of your company, sub-contractors or family members.
  • Submit as many notarized letters as needed to document the minimum experience requirements for the Certificate you are applying for.
  • Make copies of your application and notarized letters submitted with your application.  The Contractor Licensing office will not be able to make additional copies for you.

Notarized letters should be in the following format:

  • Original notarized letters 
  • If a company is verifying your experience, the letter should be typed on company stationary.
  • List exact duties, projects performed and equipment operated.
  • List exact dates of employment and time spent on each project.  
    Use the following format:  Start Date:  MM/YY, End Date:  MM/YY.

Colorado Revised Statutes require that applicants submit an Affidavit of Lawful Presence and a Secure and Verifiable Identification as proof that they are lawfully present in the United States.  Applications can be made in person or by mail.

  • Mailed certificate applications must have the Affidavit of Lawful Presence and a Secure and Verifiable Identification notarized.
  • If you are submitting your application in person to the Contractor Licensing office, you may fill out the Affidavit in the presence of Contractor Licensing staff and present an original form of identification.
  • If you are submitting an application for another person, you must have the Affidavit of Lawful Presence and a Secure and Verifiable Identification notarized.

Once your application is processed it will take approximately 7 to 10 business days to be reviewed. Mail-In applications can take up to 14 business days to be processed.

Do not submit payment with your application

You will be notified by telephone of application approval or rejection. (Please note that the Contractor License office can only give application status to the actual applicant.)

In the event that your application is not approved, you will be given the opportunity to apply a second time. Additional documentation is required. 

However, if the application is not approved the second time, there is a six-month waiting period before applicants can re-apply for the same certificate type.

For Specialty D Certificates:

If your application is approved, you will have 90 days to procure your certificate by paying a $60 fee.  Specialty D certificates are valid for 3 years.

For Certificate Requiring ICC Testing:

If your application is approved you will have 90 days to procure your Certificate by bringing in the official ICC pass letter and your payment. 

  • Fees for Supervisor Certificates are $60 for 3 years. 
  • Fees for Journeyman, Operators, or Stationary Engineers are $40 for 3 years. 

Please make check or money order payable to “Manager of Finance.”

Approved supervisor certificate holders may now apply for a contractor license.  See How to Apply for a License to download the application.

Problems Downloading a File?

If you are having trouble opening a PDF, you can right-click the link with your mouse (ctrl-click for Mac users) and choose the option "Save link as . . ." to download directly to your desktop.