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Emergency Alert
Columbia County
341 E. Main St.
Dayton, WA 99328


Assessor
Responsibilities
Contact
Chris Mills
Assessor

341 E. Main St.
Suite 6
Dayton, WA  99328

Ph: (509) 382-2131
Fx: (509) 382-4830

Hours
Monday - Friday
8:30 am - 4:30 pm
The county Assessor determines the value of all taxable real and personal property in the county for the purpose of distributing tax liabilities in an equitable manner. 

Tax Exemption Records
The Assessor is also responsible for processing and maintaining records regarding tax exemptions including:
  • Churches
  • Historical properties
  • Public properties
  • Programs like open space and forest land
  • Senior citizens

Property Information
For property information questions, please email Deputy Assessor Melanie Mings or Chief Appraiser Tammy Ketterman or call (509) 382-2131.


News and Announcements
NOTICE: Board of Commissioners Works Session
The Board of Commissioners has scheduled a work session for Wednesday, July 26th at 9:00 a.m. The purpose of the meeting is to discuss general county business. A resolution to impose a sales and use tax for E911 will be presented for adoption. Read on...
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