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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  or call (509) 382-2131.


News and Announcements
FIRE AT COLUMBIA COUNTY TRANSFER STATION
The Columbia County Transfer will be closed Saturday, July 18th until further notice as the investigation continues into the fire that occurred in the early morning hours of Friday, July 17th. Clean up of the area is underway so that a Read on...
Public Works Project at Eager Road Project Detour Information
Columbia County Public Works - Eager Road Project Detour Construction for the Columbia County Public Works Eager Road Project began on July 6th and is anticipated to last up to 6 weeks. The road will be closed to thru traffic. Read on...
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