Month to Month Tenant - Washington DC

[Vernon Bond]

Hello BP family, 

My uncle owns a home in Washington dc and currently rents the home to a tenant who does not have a lease agreement. I assume the tenants automatically fall under the month-to-month lease agreement????. Well, my uncle wants the tenants to vacate so that he can remodel the home. He knows that the tenants will not be excited about leaving so he wants to give them a formal notice to leave in accordance with the law. any guidance?