If you own property in Benton County, be on the lookout for the annual “change of value” notice from the county assessor’s office in your mailbox. 

The notices are being mailed Aug. 30. 

They’re going to property owners whose property values changed in 2024; the new values will be used to calculate property taxes for next year. The assessor’s office is required by state law to “revalue real property annually to reflect 100% of its market value based on its highest and best use,” the assessor’s office said in a statement. 

People who receive a change of value notice and have questions or concerns can reach out to the assessor’s office at 509-735-2394 or 509-786-2046.  

They also can visit an assessor’s office location in person at: 

• 7122 W. Okanogan Place, Suite E130, Kennewick. 

• 620 Market St., Prosser. (Note: the Prosser office will be open through September and then by appointment only.) 

Office hours are 8:30 a.m. to 4:30 p.m. Monday to Friday. 

Appeals can be made to the Board of Equalization by Sept. 30.