Property Tax Appeals in Siskiyou County, California
Siskiyou County's Assessment Appeals page states that an owner who disagrees with a property's assessed value should first contact the Assessor's Office for an informal review, and that a three-member Assessment Appeals Board, appointed by the Board of Supervisors, considers evidence from the owner and the Assessor's staff at a formal hearing before making the final valuation determination. The Regular Assessment filing period runs July 2 through November 30, and appeals are filed with the Clerk of the Assessment Appeals Board. The Assessment Appeals Board Clerk page directs applicants to the County Clerk's Office at 530-842-8084 for timelines and the application, at 311 Fourth Street, Room 201, Yreka, CA 96097; a related tax-collection FAQ confirms that same Clerk's Office address. Neither page states a dollar filing fee. FairPath can help an owner organize a comparison table, condition photos, official links, and a filing checklist. It does not file the application, choose the owner's opinion of value, or communicate with the Assessor's Office or the Board on the owner's behalf.
Assessment context: Begin with the Assessor-Recorder's parcel record and confirm whether the dispute concerns the January 1, 2026 lien-date value on the regular roll, a supplemental assessment tied to a change of ownership or new construction, or an assessment made outside the regular period, since each carries its own filing clock under the county's FAQ. Siskiyou County is California's far-northern mountain county, anchored by the county seat of Yreka and the volcanic peak of Mount Shasta, with the Klamath and Scott River valleys supporting ranching and agriculture and vast tracts of Klamath and Shasta-Trinity National Forest land extending toward the Oregon border. A property a few miles away can sit in a very different timberland, agricultural, or wildfire-hazard designation, so land use and access should be confirmed against the Assessor's record rather than assumed from a map.
Filing process: Siskiyou County's Assessment Appeals page says an owner should first pursue an informal review with the Assessor's Office and, if unresolved, may file an application for reduction in assessment with the Assessment Appeals Board during the regular July 2 through November 30 period. The County Clerk's Office, at 311 Fourth Street, Room 201, Yreka, CA 96097, phone 530-842-8084, supplies applications and timelines. For an assessment outside the regular period, the county FAQ's receipt-based 60-day description differs from the printed-mailing or postmark rules and exceptions in California Revenue and Taxation Code section 1605(b)-(c). Confirm the assessment type and controlling notice or tax-bill date with the Clerk; do not treat receipt as the universal trigger.
Evidence to review: Siskiyou County's Assessment Appeals Board Clerk page points applicants to the Residential Property Assessment Appeals Guide as supporting documentation for the appeals process rather than describing evidence rules directly on the page. Build a comparable-sales table showing sale date, price, parcel, community, lot size, living area, age, and condition, and weight it 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 ranchland, timberland, or forest-adjacent parcels around the Klamath and Scott valleys, document acreage, water rights, and wildfire-related site conditions with dated photographs, since land use and hazard designation vary widely across Siskiyou County's mountainous terrain.
Current deadline guidance: 2026 regular assessment appeals: July 2 through November 30, 2026. Siskiyou County's Assessor-Recorder states that regular assessment appeals are filed July 2 through November 30 with the Clerk of the Assessment Appeals Board, consistent with the state Board of Equalization's certified 2026 table. The county's tax-collection FAQ describes a 60-day period from receipt of a notice or related tax bill for an assessment outside the regular period. California Revenue and Taxation Code section 1605(b)-(c) instead generally keys these nonregular periods to the later printed mailing or postmark date, with specified tax-bill and county-resolution exceptions; section 1605(e) treats certain audits differently. The receipt wording is not a blanket deadline. Confirm the assessment type, notice and tax-bill dates, and applicable county procedure with the Clerk before relying on a nonregular deadline.
Siskiyou County's Assessor-Recorder states the Regular Assessment filing period runs July 2 through November 30, matching the state's extended deadline group.
Neither the Assessment Appeals page nor the Assessment Appeals Board Clerk page states a dollar filing fee for an appeal application.
Siskiyou County's tax-collection FAQ recommends an informal review with the Assessor's Office at 530-842-8036 before filing a formal application for reduction in assessment.
Siskiyou County spans Mount Shasta, the Klamath and Scott River valleys, and vast Klamath and Shasta-Trinity National Forest land reaching to the Oregon border.
Official filing authority: Siskiyou County Assessment Appeals Board, Clerk's Office. https://www.siskiyoucounty.gov/clerk/page/assessment-appeals-board-clerk
Source: Siskiyou County Assessor-Recorder, Assessment Appeals, https://www.siskiyoucounty.gov/assessor-recorder/page/assessment-appeals. Reviewed 2026-09-22.
Source: Siskiyou County Clerk, Assessment Appeals Board Clerk, https://www.siskiyoucounty.gov/clerk/page/assessment-appeals-board-clerk. Reviewed 2026-09-22.
Source: Siskiyou County Treasurer-Tax Collector, What if I disagree with the assessed value as shown on my tax bill?, https://www.siskiyoucounty.gov/treasurer-taxcollector/faq/what-if-i-disagree-assessed-value-shown-my-tax-bill. 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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