The Collin County appraisal district determines the market value of all property as of January 1 of the tax year. The Collin County appraisal district must repeat the appraisal process for property in the county at least once every three years. The Collin County appraisal district uses a mass appraisal technique for homes and many small business properties. The Collin County appraisal district also uses other appraisal methods to appraise properties that do not sell often, such as manufacturing plants. These methods include the cost approach and income approach in addition to the sales comparison approach. |
