Oregon Revised Statutes Property Rights and Transactions § 93.020

(1) No estate or interest in real property, other than a lease for term not exceeding one year, nor any trust or power concerning such property, can be created, transferred or declared otherwise than by operation of law or by a conveyance or other instrument in writing, subscribed by the party creating, transferring or declaring it, or by the lawful agent of the party under written authority, and executed with such formalities as are required by law.

(2) This section does not affect the power of a testator in the disposition of real property by a last will and testament, nor to prevent a trust from arising or being extinguished by implication or operation of law, nor to affect the power of a court to compel the specific performance of an agreement in relation to such property.