Arizona statutes require the County Assessor’s office to maintain all real estate values and to physically inspect each parcel at least once every four years. Staff appraisers visit the properties and note any changes in the physical attributes. This information is stored by the assessor, updated and maintained for current and future use in the assessment process.
A comparison of assessments to sales prices is performed to determine ratios, which are then used to measure the levels and uniformity of assessments. Sales ratio studies by neighborhood, type of property and other characteristics are performed on a regular basis to assure uniformity of values.
The Appraisers visit all taxable properties in the County on a regular basis and collect data about the land, buildings/improvements and personal property, which is used to help establish values. Values are determined by actual sales made in the market place. The Assessor’s Office has the legal responsibility to study those transactions and appraise all property accordingly.
Information that is collected by the appraisers is also used to update the Assessor parcel maps and the county’s GIS (Geographical Information Systems) Mapping Applications.