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!

  • 08
    Aug 2025
    09:30 AM - 10:30 AM

    Public Meeting: Public Canvassing Board Meetings

    Posted by: Chelan County Elections

    The Canvassing Board of Chelan County, pursuant to RCW 29A.60.160, will hold public meetings at the dates and times listed below. The meetings of the Canvassing Board are open, public meetings under the applicable provisions of chapter 42.30 RCW, and each meeting shall be continued until the activity for which the meeting is held has been completed.

    Chelan County Auditor’s Office
  • 05
    Aug 2025
    09:00 AM - 08:00 PM

    Election Day

    Posted by: Chelan County Elections

    Election Day

    Please see Ballot Drop Locations
  • 02
    Aug 2025
    09:00 AM - 04:00 PM

    Monthly Drop-Off Saturday - Aug. 2, 2025

    Posted by: Solid Waste Management

    Drop-off Saturday at the Moderate Risk Waste Facility is Aug. 2.

    Chelan County Moderate Risk Waste Facility
  • 29
    Jul 2025
    09:00 AM - 08:00 PM

    Registration in person at our office

    Posted by: Chelan County Elections

    Registration Deadline in person at our office.

  • 28
    Jul 2025
    09:00 AM - 05:00 PM

    Registration deadline for new voters or address updates by mail, online, email or over the phone.

    Posted by: Chelan County Elections

    Registration deadline for new voters or address updates by mail, online, email or over the phone.