Oregon Revised Statutes Revenue and Taxation § 308.235

(a) The applicable land use plans, including current zoning and other governmental land use restrictions;

(b) The improvements on the land and in the surrounding country and also the use, earning power and usefulness of the improvements, and any rights or privileges attached thereto or connected therewith; and

(c) The quality of the soil, and the natural resources in, on or connected with the land, its conveniences to transportation lines, public roads and other local advantage of a similar or different kind.