DOB must invite Third-Party Agencies to use Tertius. Contact DOB via email at [email protected] for more information on how to register for Tertius. Upon registration, use the email address where you received the invitation.

If you don’t have one yet, follow the steps in this section:

• Registering on Tertius

Follow these steps to log in to Tertius:

1. Visit tertius.dcra.dc.gov.
2. Select Log In at top right.
3. Sign in with your Access DC account.
4. You will be navigated to the Dashboard.