King County Assessor's Office in King County, Washington

About King County Assessor's Office

The King County Assessor's Office, located in Seattle, Washington, determines the value of all taxable property in King County, WA. Taxable property includes land and commercial properties, often referred to as real property or real estate, and fixed assets owned by businesses, often referred to as personal property. Property assessments performed by the Assessor are used to determine the King County property taxes owed by individual taxpayers.

• King County, WA property tax assessments
• Property tax appeals and reassessments
• Paying property tax bills and due dates
• Property tax rates and tax roll
• King County GIS maps, property maps, and plat maps
• Property records and deeds in King County