Typical countywide revaluations take between 18 - 24 months to complete. Staff of the Orange County Tax Office has been reviewing market sales, compiling studies and maintaining a list of current tax base inventory during this revaluation effective, January 01, 2021. Tax office appraisers have begun reviewing property data for the 2021 revaluation. The resulting values will be effective January 01, 2021. Real property tax bills mailed in July, 2021 will reflect the new revaluation tax assessment.