No, only the postmark is required by the due dates of April 30th and October 31st.
You may do this via our web site under the Address Change tab or you may send a letter to our office to request a name and or address change. Please be sure to include your parcel number(s) on all correspondence.
Real property foreclosure occurs when taxes become three full years delinquent. Personal property taxes follow different rules. If those taxes are delinquent, they are in immediate distraint (foreclosure); so these taxes cannot be outstanding as of May 1 and November 1.
The due date would then be the next business day (RCW 1.12.070).
They are mailed annually, within the month of February.