Every state's eviction laws differ, and some municipalities within states may have local laws that add to or differ from the state law. As a basic rule, always make sure you, the landlord, have a legal reason to evict. The timeline and process may depend on the reason for evicting. VerticalRent has compiled this basic process for every state based on our research in alphabetical order, so just scroll down to your state for a summary of eviction procedures.
It's common sense to issue a contract whenever you rent a property to a tenant, but sometimes "loopholes" occur that leave you in a difficult situation. Perhaps the tenant on the official lease vacated the premises, leaving behind a roommate who never signed the rental contract. Maybe it's your roommate who's refusing to leave the property you own, or the lease expired without an automatic renewal or transition to a month-to-month agreement.