Property Tax Appeals in Colusa County, California
Colusa County's Assessor Appeals page says an owner should first present factual evidence to the assessor's office and, if disagreement remains, may file a hearing application with the Assessment Appeals Board during the regular July 2 through November 30 period. The county also describes a 60-day receipt-based period for supplemental or escape assessments, but California Revenue and Taxation Code section 1605(b)-(c) generally uses printed mailing or postmark dates and specifies exceptions. An owner with a nonregular assessment should confirm the assessment type and controlling notice or tax-bill date with the Clerk of the Board, rather than assume receipt starts the clock. The county FAQ identifies the Clerk of the Board at 547 Market St., Suite 102, Colusa, CA 95932, phone (530) 458-0508, as the filing point. Neither county page states a dollar filing fee. FairPath can help organize an owner-reviewed comparison table, condition photos, official links, and filing checklist; the owner files and presents the appeal.
Assessment context: Begin with the Assessor's parcel record and confirm whether the dispute concerns the January 1, 2026 lien-date value on the regular roll or a supplemental or escape assessment, since the assessment type changes the filing period and notice-date rule. Colusa County lies in the Sacramento Valley along the Sacramento River, anchored by the county seat of Colusa and rice, orchard, and row-crop farmland extending west toward the Coast Range foothills near Stonyford and Sites, where a major reservoir expansion project is planned. A property a few miles away can sit in a very different irrigated-farmland, orchard, or foothill-rangeland setting, so land use and water rights should be confirmed against the Assessor's record rather than assumed from a map.
Filing process: Colusa County's Assessor Appeals page states that an owner should first present pertinent factual evidence to the assessor's office, whose adjustments will be made where appropriate; if a difference of opinion still exists, the owner may ask to be heard before the Assessment Appeals Board by filing a hearing application with the Board of Supervisors. The Board of Supervisors' FAQ confirms the Assessment Appeals Form is available online and directs owners to submit the completed form to the Clerk of the Board at 547 Market St., Suite 102, Colusa, CA 95932, phone (530) 458-0508, fax (530) 458-0510. Neither page describes a separate online e-filing portal beyond downloading the form, and neither states a dollar filing fee for the Assessment Appeals Form.
Evidence to review: Colusa County's Assessor Appeals page states that an owner should present pertinent factual evidence important in determining the market value of the property, first to the assessor's office and then, if unresolved, at a hearing before the Assessment Appeals Board. Build a comparable-sales table showing sale date, price, parcel, community, lot size, living area, age, and condition, weighted toward sales near the January 1, 2026 lien date, since California law generally excludes comparable sales occurring more than 90 days after that date. For rice, orchard, or foothill-rangeland parcels around Colusa, Stonyford, or the Sites area, document acreage, water rights, and any condition issues with dated photographs, since land use varies widely across Colusa County's valley-to-foothill geography.
Current deadline guidance: 2026 regular assessment appeals: July 2 through November 30, 2026. Colusa County's Assessor Appeals page states that regular hearing applications are filed July 2 through November 30 and describes a 60-day period from receipt of a supplemental or escape-assessment notice. California Revenue and Taxation Code section 1605(b)-(c) instead generally keys these nonregular assessment periods to the later printed mailing or postmark date of the notice, with a tax-bill exception or county-resolution route in specified circumstances; section 1605(e) treats certain audits differently. The county's receipt wording should not be used as a blanket deadline. Confirm the assessment type, notice and tax-bill dates, and applicable county procedure with the Clerk of the Board before relying on a nonregular deadline. The state Board of Equalization's certified 2026 table supports the regular filing period.
Colusa County's Assessor Appeals page states hearing applications must be filed with the Board of Supervisors between July 2 and November 30 each year.
Neither the Appeals page nor the Board of Supervisors' FAQ states a dollar filing fee for the Assessment Appeals Form.
The Board of Supervisors' own FAQ confirms the Assessment Appeals Form is available online and names the Clerk of the Board as the filing point.
Colusa County spans Sacramento Valley rice and row-crop farmland along the Sacramento River, reaching into Coast Range foothills near Stonyford and the Sites Reservoir project area.
Official filing authority: Colusa County Board of Supervisors, Clerk of the Board. https://www.countyofcolusaca.gov/206/Board-of-Supervisors
Source: Colusa County Assessor, Appeals, https://www.countyofcolusaca.gov/90/Appeals. Reviewed 2026-09-22.
Source: Colusa County, Board of Supervisors, https://www.countyofcolusaca.gov/206/Board-of-Supervisors. Reviewed 2026-09-22.
Source: Colusa County Board of Supervisors, FAQ: Is the Assessment Appeals Form available online?, https://www.countyofcolusaca.gov/Faq.aspx?QID=76. Reviewed 2026-09-22.
Source: California State Board of Equalization, Letter to Assessors 2026/023: 2026 Assessment Appeal Filing Periods, https://boe.ca.gov/proptaxes/pdf/lta26023.pdf. Reviewed 2026-09-22.
Source: California Legislature, California Revenue and Taxation Code section 1605, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=RTC§ionNum=1605.. Reviewed 2026-09-24.
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