About us

What we do

The Department of Revenue’s Property Tax division oversees the administration of property taxation at state and local levels. This website serves as a resource for county assessors, treasurers, and boards of equalization in Washington state.

Responsibilities of our division include, but are not limited to:

  • Developing rules, guidelines, and documentation affecting the assessment and taxation of property.
  • Offering advice, guidance, and training to offices of county assessors, treasurers, and boards of equalization.  
  • Appraising the intercounty operating property of about 375 airline, railroad, power, gas, railroad car line, and communication companies.
  • Reviewing, analyzing, reporting, and testifying on property tax legislation in coordination with other DOR divisions.
  • Conducting county assessment ratio studies to set the state school levy and equalize the value of utilities to local taxing districts.
  • Providing appraisal assistance to counties.
  • Administering property tax exemptions or deferrals for nonprofit organizations and senior citizens.
  • Conducting general compliance reviews to assess county compliance to state law in the areas of:
    • County boards of equalization,
    • Levy calculations,
    • Revaluation programs for all counties,
    • And administration of the current use program.