Oregon Revised Statutes Public Health and Safety § 455.448

(1) For the purposes of enforcement of this chapter the building inspector or any person appointed by the Department of Consumer and Business Services, after showing official identification and, if necessary, a warrant issued to the building owner or agent of the owner under subsection (2) of this section, may:

(2) If entry is refused, the building inspector or any duly appointed representative of the Department of Consumer and Business Services may appear before any magistrate empowered to issue warrants and request such magistrate to issue an inspection warrant, directing it to any peace officer, as defined in ORS 161.015 to enter the described property to remove any person or obstacle and assist the building inspector or representative of the department inspecting the property in any way necessary to complete the inspection.