Department of Revenue Valid Sales Study

To provide uniform taxation statewide, the Department of Revenue (Department) implements an annual study of property in each of the state's 39 counties. This piece of the 2017 ratio year study measures how closely Chelan County's 2016 single-family residence assessed values compare to market values. The study consists of two analysis where the Department selects a random sample of 60 sales from Chelan County's valid single-family residential sales report. These sales are then compared to comparable non-selling properties to determine if selling and non-selling properties are being assessed similarly. Click here to download Valid Sales Study (2016 Sales for 2017 Ratio Year)


Assessor Welcome Message

Happy 2017 everyone!  In the past, this letter has been an over view of the prior year.  This year I would like to invite you into our “assessment” world and make sure every taxpayer has an opportunity to become involved and engaged in our annual update process.

The basis of fair and equitable assessments relies on accurate property data.  This will be our focus for the next several years.  We strive to improve and update our data for accuracy, and sometimes we need to ask the property owners for assistance in this endeavor.  Our staff is committed to courteous and thorough customer service.  If you see our appraisers in the field, please feel free to ask questions.  We are here to serve you, our customers and I want to hear from our constituents.

Our community meetings will continue from year to year, giving property owners an opportunity to hear how our assessment process works and to ask questions.  I have made a commitment to keep our office transparent and available to the public, and I intend to promote that concept with continued community outreach meetings, planning more senior citizen workshops and constantly updating and improving the information available on our website.

As the real estate market changes from year to year, and more specifically, from area to area, there will be demand fluctuations in certain areas, resulting in fluctuating market adjustments.  This is normal, and moves around the county as areas reach their saturation values.  I know that it is frustrating seeing your value change from year to year, but the real estate market relies on buyers and sellers, and those desires to buy/sell change frequently.  Typically our market is 12-24 months behind the trends we see on the west side of the mountains.  The market in 2016 was strong and stable in most areas of the county.   The volume of sales has increased, which is a positive sign for our local economy. One thing to keep in mind as you look at the values on either a Notice of Value or a Tax Statement is that these values are based on sales from prior years.  For example:  Taxes payable in 2017 are based on sales primarily from 2015 & 16.  As you can see, even in the annual revaluation process, the data is less than current. Most, if not all, of the sales data that is used to value your property can be found on our website database and GIS. 

I want to personally thank you for your patience and understanding.  It is a pleasure to be able to serve the taxpayers of Chelan County.

If you have any questions please feel free to contact me at (509) 667-6367 or


Deanna Walter, Chelan County Assessor


What We Do

The Assessor’s office is responsible for determining the value of all taxable real and personal property in the county on a fair and equitable basis, along with maintaining accurate and accessible property information, providing timely and accurate assessments for tax purposes, and a detailed parcel map showing all parcels within the County. Chelan County is now annually updating all properties according to market sales, and continues to do physical inspections of every property on a 4-year cycle. Washington State law requires property to be assessed at 100% of fair market value.

Your property taxes fund state and county services, including roads, transit, schools, libraries, parks, hospitals, fire and rescue, law enforcement, environmental and social services.  Information such as parcel numbers, ownership, tax code areas, and assessed valuations for all property within the county can be obtained on-line through the property search of the Assessor's web site, or by calling the assessor's office during business hours.