RCW 84.40.110: Examination under oath—Default listing.

When the assessor shall be of opinion that the person listing property for himself or herself or for any other person, company, or corporation, has not made a full, fair, and complete list of such property, he or she may examine such person under oath in regard to the amount of the property he or she is required to list, and if such person shall refuse to answer under oath, and a full discovery make, the assessor may list the property of such person, or his or her principal, according to his or her best judgment and information.