How to appeal a Colusa County, CA property assessment

Hearing applications must be filed with the Board of Supervisors between July 2 and November 30, or within 60 days of receipt of a notice of supplemental assessment or escape assessment.

Checked Oct 25, 2026.

Assessment Appeals Board

Checked Oct 25, 2026.

§ 2605 Rev. & Tax. Code | November 1 | Property owners | First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.

Checked Oct 25, 2026.

1st installment is due on November 1st, 2026, and will become delinquent if not paid by 5:00 p.m. on December 10th, 2026; thereafter a 10% penalty will be added.

Checked Oct 25, 2026.

§ 2606 Rev. & Tax. Code | February 1 | Property owners | Second installment real property taxes due and payable.

Checked Oct 25, 2026.

2nd installment is due on February 1st, 2027, and will become delinquent if not paid by 5:00 p.m. on April 10th, 2027; thereafter a 10% penalty and a $20 cost will be added.

Checked Oct 25, 2026.

If the specified date falls on Saturday, Sunday, or a legal holiday, the action may be done on the next business day. (Government Code §§ 6706, 6707)

Checked Oct 25, 2026.

§§ 2618 and 2705 Rev. & Tax. Code | April 10 | Property owners | Second installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m., or close of business day, whichever is later. If the specified date falls on Saturday, Sunday, or a legal holiday, the action may be done on the next business day. (Government Code §§ 6706, 6707)

Checked Oct 25, 2026.

1st installment is due on November 1st, 2026, and will become delinquent if not paid by 5:00 p.m. on December 10th, 2026; thereafter a 10% penalty will be added. 2nd installment is due on February 1st, 2027, and will become delinquent if not paid by 5:00 p.m. on April 10th, 2027; thereafter a 10% penalty and a $20 cost will be added.

Checked Oct 25, 2026.

When a property's value increases more than 2%, the assessor will notify the owner of the new value, in writing, prior to the issuance of a tax bill.

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Fiscal Year 2026/2027 Secured Property Taxes

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Treasurer-Tax Collector

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(530) 458-0440

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Assessor

Checked Oct 25, 2026.

(530) 458-0450

Checked Oct 25, 2026.