The county mapping department inventories all real property and a permanent unique parcel identification number is assigned to each parcel. To assist with the inventory process, the County Appraiser's department also develops a property description for each parcel that is solely used for tax appraisal purposes. It is sometimes different from the legal description recorded in the Register of Deeds' office. When changes occur due to a sale of a portion of a parcel, parcel combinations or through new land plottings, the county’s mapping department assigns new parcel numbers.

For each parcel of land, the improvements, such as buildings, must be measured and described through on-site inspections by field appraisers. State statutes require that all properties be physically inspected and remeasured by an appraiser at least once in a six-year period. This helps insure that all new construction and changes to existing improvements are discovered and added to the tax rolls. It also helps clean up the current data on the property should errors be found. The County Appraiser's office also uses building permits provided by the county and the cities within the county to track new construction. Under current Kansas’s statutes, all real property is revalued annually.

For personal property, the State of Kansas uses a self-reporting system. In January of each year the County Appraiser's office mails out personal property renditions to individual taxpayers and businesses that have had personal property in the past. If taxpayers do not receive a rendition but they have an item of personal property such as a boat that needs to be rendered, they should contact the County Appraiser's office and a rendition will be mailed to them.

The second of the appraiser's duties is to value equitably and at fair market value all property identified as of tax day - January 1 of each year. This involves first determining if the property is taxable. Unless specifically exempted by the State of Kansas or by the State Board of Tax Appeals, all tangible assets, land and buildings and personal property in the state are taxable. Once the owner of the property is identified through the inventory process, the property must then be accurately valued at its fair market value. Fair market value is the amount of money a well-informed buyer and a well-informed seller would accept for property in an open and competitive market without any outside influence.

An important thing to remember is that appraisers do not create value. People determine value by their transactions in the market place. The appraiser simply has the legal responsibility to analyze those transactions and appraise individual properties based upon what is happening in the market place.

The appraiser's office does not determine taxes, but instead determines only the market value of the property. The amount of taxes each taxpayer pays is determined by all the taxing agencies, i.e., city, county, school districts, etc. and depends on the amount of taxes needed to provide all the services the taxpayers require. The assessed value is determined by multiplying the fair market value of the property, as determined by the County Appraiser's office, by the assessment rate as outlined in the state constitution.