Washington Revised Code Title 64. Real Property and Conveyances § 64.80.060. Requirements

(1) Except as otherwise provided in subsection (2) of this section, must contain the essential elements and formalities of a properly recordable inter vivos deed;

(2) Must state that the transfer to the designated beneficiary is to occur at the transferor's death; and

(3) Must be recorded before the transferor's death in the public records in the office of the auditor of the county where the property is located.