Oregon Revised Statutes Public Health and Safety § 447.247

(a) In all shopping centers, shopping malls, professional offices of health care providers and government buildings that are covered by Title II of the Americans with Disabilities Act;

(b) In all other commercial facilities, private entities and places of public accommodation covered by Title III of the Americans with Disabilities Act that have more than one floor level and more than 3,000 square feet in ground area or that are more than 20 feet in height, measured from the top surface of the lowest flooring to the highest interior overhead finish of the building; and

(c) In all private membership clubs and churches that have more than one floor level and more than 4,000 square feet in ground area or that are more than 20 feet in height, measured from the top surface of the lowest flooring to the highest interior overhead finish of the building.