Direct answer: In Washington, the primary assessment office term is County Assessor. Tax collection, recorded documents and formal appeals may be handled by separate offices.
Who handles property tasks in Washington?
AssessmentCounty Assessor
Appeal bodyLocal assessment appeal body; verify the current local process
Tax collectionCounty or local tax collector/treasurer
Recorded documentsCounty recorder, clerk or local land-record office
How the state system works
County assessors maintain property values and exemptions; county treasurers collect taxes.
County Assessor offices maintain assessment or parcel information in covered localities. Tax collection, recorded documents and formal appeals may be handled by separate offices, so users should follow the office-specific links in each verified local guide.