The main service provided by any county assessor, including the one for Walla Walla County, is to determine the fair market value of a piece of property within the county borders. The official government website for Walla Walla County states that its assessor values property for tax purposes, and it defines property as real estate, land, improvements and personal property. The department provides levy tax information and an annual tax year assessment guide.
The County Assessor page of the Walla Walla government site provides a property record search that allows users to find information about a given property, including its current value for tax purposes, most recent sale date and price, current owner and taxes owed. Those using the county's search tool can find a property by entering an account number, street address, "Doing Business As" name, or a sale date range.
Other services provided by the County Assessor's office include online tools such as an interactive map and a parcel number key, which is based on the Public Land Survey System. The department also provides links to various forms and publications on the Department of Revenue website for the State of Washington, and gives details about property tax exemptions for senior citizens and disabled persons.