ORS § 195.332
For the purposes of ORS 195.305 to 195.336 and sections 5 to 11, chapter 424, Oregon Laws 2007, sections 2 to 9 and 17, chapter 855, Oregon Laws 2009, and sections 2 to 7, chapter 8, Oregon Laws 2010, the fair market value of property is the amount of money, in cash, that the property would bring if the property was offered for sale by a person who desires to sell the property but is not obligated to sell the property, and if the property was bought by a person who was willing to buy the property but not obligated to buy the property. The fair market value is the actual value of property, with all of the property's adaptations to general and special purposes. The fair market value of property does not include any prospective value, speculative value or possible value based upon future expenditures and improvements.
ORS 195.332