Chelan County Assessor

Important Assessment Dates

These are some important dates on the assessment calendar.

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.
  • Notice of Values are mailed out.

July 1

  • Filing deadline for Board of Equalization petitions. (Dependent on Mailing Date of Notice of Values.)

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.
  • Taxing certifications and the amount levied per taxing district are due to the County Assessor.

 

 

Posted: 03/25/2015 01:34 PM
Last Updated: 04/09/2026 09:18 AM

Chelan County Calendar

Upcoming events and schedules at the county!

  • 12
    Sep 2026
    10:00 AM - 03:00 PM

    Cashmere Airport Day

    Posted by: Board Of County Commissioners

    Come for the food, the fun and the airplanes! A casual day to explore your local county airport.

    Cashmere Airport
  • 10
    Sep 2026
    08:00 AM - 05:00 PM

    Chelan County Fair 2026

    Posted by: Chelan County Expo Center

    The Chelan County Fair exists to provide a family event reflecting the past, showcasing current accomplishments and looking to the future of the county's best resources - its youth, agriculture and communities.

    Chelan County Expo Center
  • 05
    Sep 2026
    09:00 AM - 04:00 PM

    Monthly Drop-Off Saturday - Sept. 5, 2026

    Posted by: Solid Waste Management

    Drop-Off Saturday at the Moderate Risk Waste Facility is Sept. 5

    Moderate Risk Waste Facility
  • 18
    Aug 2026
    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
  • 18
    Aug 2026
    01:30 PM - 02:00 PM

    Public Meeting: Certify Election

    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