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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  or call (509) 382-2131.


News and Announcements
NOTICE: Public Hearing for Various County Road Programs
A Public Hearing will be held at 10:01 a.m. on 3 December 2014 for the Board of Columbia County Commissioners to consider the adoption of the Columbia County Six Year Transportation Improvement Program from 2015 to 2020; and, 2015 County Arterial Read on...
NOTICE: Public Hearing - 2015 Public Works Fee Schedule
A Public Hearing will be held at 10:30 a.m. on 3 December 2014 for the Board of Columbia County Commissioners to consider the setting of fees for various items at the Columbia County Public Works Department. Fees are being proposed for change for Read on...
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