Taxpayer's Advocate Property Info & Maps Map to Our Office Assessor/BoE Forms Popular Links attach_money Buying or Selling Property construction Building Something New upload_file Business Personal Property home Change Mailing Address assessment Appeal your Assessment help_outline Estimate Taxes Announcements Previous Prop 19 Explained On November 3, 2020, California voters approved Proposition 19, The Home Protection for Seniors, Severely Disabled, Families, and Victims of Wildfire or Natural Disasters Act. Local Assessment Rolls Delivered Assessor Claude Parrish has delivered the 2022-23 Local Assessment Roll of Values that includes all locally assessable property in Orange County. The total net value on the Roll is... Open to the Public The Orange County Assessor Department's public service counters at the main office and the south county office in Mission Viejo are available for public access. In addition, many... Laguna Niguel Fire The Assessor is working with property owners to review property damages totaling at least $10,000 caused by the recent fires. To see if you qualify, please refer to Property Damage... Next Dates to Remember Wednesday, August 31, 2022 Last Day to Pay Business Property Tax Last day to pay Business Personal Property Tax bill before penalties are added. Tuesday, November 1, 2022 First Installment Due Secured Property Tax Bill - First Installment Due. Wednesday, November 30, 2022 Last Day to File Assessment Appeal Last day to file Assessment Appeal or the next business day if the date falls on a weekend or holiday (for assessments dated January 1).