Chelan County Assessor

Important Assessment Dates

These are some important dates on the assessment calendar.

Date Item Due
January 1 Real and personal property is subject to taxation and valuation for assessment purposes as of this date.
January 15 Certification of Levies.
February 15  Property tax statements are mailed out by the County Treasurer and property taxes can be paid after this date to the County Treasurer.
April 30 Personal property listings due.
April 30 First half property taxes are due to the County Treasurer.
May 31 End of revaluation cycle for assessment purposes.
May 31 Notice of Values are mailed out.
July 1 Filing deadline for Board of Equalization petitions.*
July 15 Board of Equalization meets in open session.
August 1 Most taxing district boundaries must be established.
August 31 Last day assessor can add new construction value.
October 1 Last day to file for exemption on historic property.
October 31 Second half property taxes are due to the County Treasurer.
November 30 City and other taxing districts budgets are due to the County Legislative Authority.
November 30 Taxing certifications and the amount levied per taxing district are due to the County Assessor.
  *Dependent on Mailing Date of Notice of Values.

 

Posted: 03/25/2015 01:34 PM
Last Updated: 07/03/2025 07:23 AM

Chelan County Calendar

Upcoming events and schedules at the county!

  • 24
    Sep 2025
    09:30 AM - 10:30 AM

    Public Meeting: Official Logic and Accuracy Test of Voting System and Accessible Voting Unit (AVU) Demonstration

    Posted by: Chelan County Elections

    Chelan County Auditor’s Office
  • 24
    Sep 2025
    06:30 PM - 08:00 PM

    Planning Commission - September 24, 2025

    Posted by: Community Development

    By Zoom Video Conference or in person.
  • 19
    Sep 2025
    08:00 AM - 05:00 PM

    Ballots mailed for military, overseas and out of state voters

    Posted by: Chelan County Elections

    Ballots mailed for Military, Overseas and Out of State voters

  • 19
    Sep 2025
    08:00 AM - 05:00 PM

    Wenatchee Kennel Club Scent Trials - September

    Posted by: Chelan County Expo Center

    Wenatchee Kennel Club Dog Show

    Chelan County Expo Center
  • 10
    Sep 2025
    10:00 AM - 12:00 PM

    Chelan County Civil Service Commission

    Posted by: Human Resources

    The Chelan County Civil Service Commission will be meeting on September 10, 2025.

    Chelan County Commissioners Office, CM Conference Room 1
Application: 7AEA67B9B0D58CFA59F53E525A3AA3D5 [View Routes,Run Tests, View Tests]
Framework: CFWheels 2.0.1 [View Docs]
Environment: Development
Host Name: websrv
CFML Engine: Adobe ColdFusion 2021,0,04,330004
Data Source: Cccmsdbv2 [Migrations]
Database Adapter: SQLServer
URL Rewriting: ON
URL Obfuscation: Off
Plugins: None
Route: Wildcard
Controller: Assessor
Action: Pages
Key(s): important-assessment-dates
Parameters: None
Execution Time: 78ms (action ~62ms, view ~46ms)