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Contact the Assessor's Office
Find important contact information for the Assessors, taxpayer assistance, tax relief, and collection.
General Assessor's information
- Email: Assessor.Info@KingCounty.gov
- Phone: 206-296-7300
- TTY relay: 711 or 800-833-4388
- Address: King Street Center
201 South Jackson Street, Room 708
Seattle, Washington 98104
- Hours: Monday through Friday 8:30 a.m. to 4:30 p.m.
Other important numbers
Taxpayer assistance
- Real property information (values, comparable sales, legal descriptions, appraisal help): 206-296-7300
- Property Tax Advisor: 206-477-1060
Tax relief
- Senior and disability exemptions: 206-296-3920
- Senior and disability deferrals: 206-296-3920
- Home improvement exemptions: 206-263-2338
- Destroyed property exemptions: 206-263-2332
- Farm, agriculture and forest land: 206-263-2374
- Open space (PBRS) and timber land: 206-477-4643
- Historic property exemptions: 206-263-2330
- Non-profit organizations: 206-263-2324
Personal property
- Business equipment and supplies lists: 206-296-5126
- Floating and mobile homes: 206-296-5126
Tax bill and collection information (Treasury)
- Customer service: 206-263-2890
- Manager's office: 206-263-2860
- Real property tax information: 206-263-2890
- Property tax customer service: 206-263-2890
- Property tax foreclosures: 206-263-2649
- Personal property tax information: 206-263-2844
- Local improvement district records: 206-263-1893
King County Recorder's Office
- Real estate excise tax: 206-477-6620
ADA accommodation
- Request an ADA accommodation for in-person visits to the King County Customer Service Center (201 S. Jackson Street)