Orange County, California
Filing deadline: November 30 (earliest possible)
The annual filing period runs from July 2 through November 30 for regular assessments dated January 1. If the county Assessor does not mail assessment notices to all taxpayers by August 1, the filing period is extended to November 30 instead of September 15 (California Revenue & Taxation Code Section 1603).
What to file
appeal
Approximate effective tax rate
1.20% (published estimate, 2025)
Look up your current assessed value on the county assessor's site →