It is my understanding of D.C. law that you would have to provide him with formal notice of your intention to terminate his tenancy, before you could proceed with eviction. The Superior Courts of DC, Landlord and Tenant Branch, will likely offer you free assistance through the following program:
Quote Quoting Landlord Tenant Resource Center
The Resource Center provides free legal information to both unrepresented landlords and unrepresented tenants who have residential housing disputes. Volunteer attorneys:

* help self-represented persons understand court proceedings;
* assist self-represented persons prepare pleadings;
* coach self-represented persons how best to present cases in court;
* provide information on how to obtain continuances and retain counsel;
* make referrals to legal service providers in appropriate cases; and
* inform low-income litigants of financial and other social service resources that might be available and refer them to the appropriate resources.

Location
Court Building B, Room 102
409 E Street, N.W.

The Resource Center does not provide assistance by phone. Those seeking assistance should come to the center during its operating hours.

Phone: (202) 508-1710

Hours of Operation
Weekdays: 9:15a.m.-12:00noon