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Thurston County, Washington

The content on the Thurston County website is currently provided in English. We are providing the “Translation” for approximately 10 languages. The goal of the translation is to provide visitors with limited English proficiency to access information on the website in other languages. The translations do not translate all types of documents, and it may not give you an exact translation all the time. The translations are made through an automated process, which may not result in accurate or precise translations, particularly of technical and legal terminology.


Please see if one of these fact sheets will answer your questions about property concerns:

1. What is Market Value?

Market value has been defined by: statue, state regulations, and court cases. Generally, it is the amount of money a buyer of property willing but not obligated to buy would pay a seller of property willing but not obligated to sell. In arriving at a determination of such value, the assessing officer can consider only those factors which can within reason be said to affect the price in negotiations between a willing purchaser and a willing seller, and he must consider all of such factors.

2. Effective Date of the Appraisal

Real estate markets are dynamic and in a constant state of change. These changes can be due to seasonal as well as cyclical factors. As a result, statue determines a specific date on which all properties are to be valued in order to avoid any bias in relationship to time. In our state that day is January 1.

3. Why have a Property Tax?

Properties are appraised so our community has advantages such as schools, fire and police protection, and other public benefits. Each property owner pays a fair share of the cost, in proportion to the amount of money our individual properties are worth.

Historically, it is a more stable source of funds than either the sales and income taxes. Why? Because it flucuates less to the rapid changes associated with consumer spending or employment levels. It may seem counter intutive, but properties taxes often improved the value of homes. When jurisdictions have sufficient funds to invest in schools, libraries, police and fire services there is generally a rise in home values.

4. How is Property Appraised?

To find the value of any piece of property, the assessor must first find out what properties similar to it are selling for, what it would cost to replace it, how much it takes to operate and keep it in repair, what rent it may earn, and many other facts affecting its value, such as the current rate of interest charged for borrowing the money to buy or build properties like yours.

Using these facts, the assessor can then determine the property value in three different ways. Cost Approach: The first method to value your property is based on how much money it would take, using current material and labor costs, to replace your property with one similar. If your property is not new, the assessor must estimate depreciation as measured in the marketplace based on sales of used homes.

Sales Comparison Approach: A second method compares your property to others with similar characteristics that have sold recently. These prices, however, must be analyzed very carefully to get the true picture. One property may have sold for more than it was really worth because the buyer was in a hurry and would pay any price. Another may have sold for less money than it was actually worth because the owner needed cash right away and sold the property to the first person who made an offer.

When using the sales comparison approach, the assessor considers overpricing or under-pricing and analyzes many sales to arrive at a fair valuation for your property. Size, quality, condition, location, and time of sale are also important factors that are considered.

Income Approach: The third way is to evaluate how much income your property would produce if it were rented as an apartment house, a store, or a factory. The assessor must consider operating expenses, taxes, insurance, maintenance costs, and the return most people would expect on your kind of property.

5. Why do Assessed Values change from year to year?

When market value changes, so does assessed value. For instance, if you added a garage to your home, the assessed value would increase. Property in poor repair decreases in value.

Real Estate transactions create value. The assessor has the legal responsibility to study transactions and appraise your property accordingly.

6. What are your rights and responsibilities?

If your opinion of the value of your property differs from the assessor's, by all means go to the office and discuss the matter. Staff will answer your questions about the appraisal and explain how to appeal if you cannot come to an agreement. The Assessor's Office relies on the property owner for information. You can help by providing accurate information. If you have questions, feel free to call our office at (360) 867-2200 or come in to see us.

How long is the appeal period?

In 2011, the appeal period was expanded from 30 to 60 days from the date that value modifications were mailed. This means, if you are unable to resolve your concern with our office during the 60 days you must file your appeal on or before the appeal deadline located on your valuation notice.

What are the duties of the Thurston County Assessor?

Thurston County is on an annual valuation cycle, meaning that all real property is physically inspected at least once every six years, but is statistically updated every year. Taxable personal property must be listed and assessed each year.

The County Assessor determines current market value of taxable property in Thurston County for the purposes of property taxation. Fair market value is the amount a willing buyer would pay a willing seller when neither is under undue pressure. The Thurston County Assessor's Office uses 5 years of market arms length sales of similar properties and the replacement cost of buildings (based on the cost of current labor and material, less depreciation), to arrive at fair market value.

Where do I go to question the value placed on my property by the Assessor?

Telephone the Assessor's Office at (360) 867-2200, or come into our office at 3000 Pacific Ave SE Olympia, WA 98501. We will review all of our processes and the steps taken to come up with your value.

If you want to see current and past values or find out information about your property, go to the Assessor's Parcel Look-Up System (A+ Parcel Search).

How do I file an appeal?

If you believe that your assessment is above market value, you may file a petition with the County Board of Equalization. Questions for the Board of Equalization should be directed to Ruth Elder, Clerk at (360) 786-5135 or by email at Appeal forms may be downloaded from the website, acquired from the Thurston County Assessor's Office, or requested in writing from the Thurston County Board of Equalization.

Click here to download an appeal form