Below are important dates and deadlines that you will need to know about.
| Date | Description |
| February 16, 2026 | Presidents Day Holiday - Assessor's Office Closed |
| February 17, 2026 | Exemption Claim Deadline Last day to file a claim for exemptions. |
| February 17, 2026 | Commercial Vessel Classification Deadline Last day to file affidavit for commercial vessel for 4% assessment. |
| February 17, 2026 | Aircraft Property Statement Deadline Last day to file Aircraft Property Statement. |
| March 2, 2026 | Agricultural Preserve Questionnaire Deadline Last day to file the Agricultural Preserve Questionnaire for properties subject to the Land Conservation Act. |
| March 31, 2026 | Cesar Chavez Day Holiday - Assessor's Office Closed |
| April 10, 2026 | Property Statement Filing Deadline Last day to timely file Property Statement (Agriculture, Apartment, Business, and Vessel). |
| April 10, 2026 | Second Secured Tax Installment Delinquent Second installment of taxes on the secured roll are considered delinquent if not paid by this date. |
| May 7, 2026 | Property Statement Filing Deadline (No Penalty) Last day to timely file Property Statement (Agriculture, Apartment, Business, and Vessel) without a penalty. |
| May 25, 2026 | Memorial Day Holiday - Assessor's Office Closed |
| June 1, 2026 | Property Statement Amendment Deadline Last day to amend timely filed Property Statement (Agriculture, Apartment, Business, and Vessel) for errors or omissions. |
| June 19, 2026 | Juneteenth Holiday - Assessor's Office Closed |
| July 1, 2026 | Completion of Local Assessment Roll Assessor must complete the local assessment roll and deliver to Auditor. |
| July 3, 2026 | Independence Day Holiday - Assessor's Office Closed |
| August 1, 2026 | Assessed Value Notice Deadline Last day to provide property owners with notice of assessed value for September 15 assessment appeal deadline. |