Wash. Rev. Code § 84.40.040
The assessor shall begin the preliminary work for each assessment not later than the first day of December of each year in all counties in the state. The assessor shall also complete the duties of listing and placing valuations on all property by May 31st of each year, except that the listing and valuation of construction and mobile homes under RCW 36.21.080 and 36.21.090 shall be completed by August 31st of each year, and in the following manner, to wit:
The assessor shall actually determine as nearly as practicable the true and fair value of each tract or lot of land listed for taxation and of each improvement located thereon and shall enter one hundred percent of the true and fair value of such land and value of such improvements, together with the total of such one hundred percent valuations, opposite each description of property on the assessment list and tax roll.
The assessor shall make an alphabetical list of the names of all persons in the county liable to assessment of personal property, and require each person to make a correct list and statement of such property according to the standard form prescribed by the department of revenue, which statement and list shall include, if required by the form, the year of acquisition and total original cost of personal property in each category of the prescribed form. However, the assessor may list and value improvements on publicly owned land in the same manner as real property is listed and valued, including conformance with the revaluation program required under chapter 84.41 RCW. Such list and statement shall be filed on or before the last day of April. The assessor shall on or before the 1st day of January of each year mail, or electronically transmit, a notice to all such persons at their last known address that such statement and list is required. This notice must be accompanied by the form on which the statement or list is to be made. The notice mailed, or electronically transmitted, by the assessor to each taxpayer each year shall, if practicable, include the statement and list of personal property of the taxpayer for the preceding year. Upon receipt of such statement and list the assessor shall thereupon determine the true and fair value of the property included in such statement and enter one hundred percent of the same on the assessment roll opposite the name of the party assessed; and in making such entry in the assessment list, the assessor shall give the name and post office address of the party listing the property, and if the party resides in a city the assessor shall give the street and number or other brief description of the party's residence or place of business. The assessor may, after giving written notice of the action to the person to be assessed, add to the assessment list any taxable property which should be included in such list.
RCW 84.40.040
Contingent effective date-2001 c 187: See note following RCW 84.70.010.
Application-2001 c 187: See note following RCW 84.40.020.
Application-Severability-Part headings not law-Referral to electorate-1997 c 3: See notes following RCW 84.40.030.
Effective date-1988 c 222: "Sections 15, 17, 19, 20, 21, 28, and 30 of this act shall take effect January 1, 1989." [ 1988 c 222 s 35.]
Severability-Effective dates and termination dates-Construction-1973 1st ex.s. c 195: See notes following RCW 84.52.043.
Effective date-1967 ex.s. c 149: See note following RCW 82.04.050.
Savings-1967 ex.s. c 149: See RCW 82.98.035.
Severability-1967 ex.s. c 149: See note following RCW 82.98.030.