Oregon Residential Eviction Complaint is a legal form used by landlords in Oregon to initiate the process of evicting tenants from their rental property. It is usually filed with the county court, and it serves as a notice to the tenant that they are being evicted. The landlord must notify the tenant of the eviction by providing them with a copy of the complaint. There are two types of Oregon Residential Eviction Complaint: Unlawful Detained Complaint and Forcible Entry and Detained Complaint. An Unlawful Detained Complaint is used when the tenant has failed to pay rent, violated the lease agreement, or otherwise breached the terms of the lease. A Forcible Entry and Detained Complaint is used when the tenant has unlawfully occupied the premises, such as by breaking into or entering without the landlord's permission.