Property Tax Appeals in Tuolumne County, California
Tuolumne County's Property Tax Assessment Appeals page states that an owner who disagrees with the Assessor's value may appeal to the Board of Equalization by filing an Application for Changed Assessment, with a separate application required for each parcel, and that the Regular Assessment filing period is July 2nd through November 30th. The page directs applicants to mail complete original forms to the Board Clerk, Tuolumne County Board of Supervisors, 2 S. Green Street, Sonora, CA 95370, and does not state a dollar filing fee. Once an application is filed and accepted, the applicant is notified by mail at least 45 days before the hearing, and the appeals board has two years from the filing date to hear and decide the appeal. 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 on the owner's behalf.
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 assessment, which Tuolumne County's page places on a separate 60-day filing clock from the notice date. Tuolumne County rises from the Sierra Nevada foothills around the Gold Rush county seat of Sonora and the historic town of Columbia into high-country terrain that includes Yosemite National Park's Tuolumne Meadows, Stanislaus National Forest, and mountain communities near Dodge Ridge and Pinecrest. A property a few miles away may sit at a very different elevation, forest-fire hazard severity zone, or seasonal-access grade, so terrain, road access, and any wildfire-related site conditions should be confirmed against the Assessor's record rather than assumed from a map.
Filing process: Tuolumne County's page states that the Regular Assessment appeal filing period is July 2nd through November 30th and that Supplemental assessment appeals must be filed within 60 days of the notice of assessment date. Complete original forms are mailed to the Board Clerk, Tuolumne County Board of Supervisors, 2 S. Green Street, Sonora, CA 95370, and an application form or additional information can be requested from the Clerk of the Board of Supervisors at 209-533-5521. The page states that once an application is filed and accepted by the Clerk of the Board, a hearing date is set and the applicant is notified by mail at least 45 days before the hearing, with the appeals board given two years from the filing date to hear and render a decision; it does not state a dollar filing fee.
Evidence to review: Tuolumne County's Decline in Value / Assessment Appeals page states that after an application is filed, a hearing is held at which the applicant and the Assessor's Office present evidence to support their different opinions of value, and that the Board of Supervisors, sitting as the local Board of Equalization, then determines the value based on the evidence presented by both parties. The page links to the State Board of Equalization's assessment-appeal video and the Taxpayers' Rights Advocate for further background. 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. For mountain, forested, or wildfire-affected parcels, document elevation, access, and any calamity-related damage with dated photographs, since a decline-in-value review can separately apply if a property has been damaged by a calamity exceeding $10,000 in loss.
Current deadline guidance: 2026 regular assessment appeals: July 2 through November 30, 2026. Tuolumne County's Property Tax Assessment Appeals page states that the Regular Assessment appeal filing period is July 2nd through November 30th, noting that the 2025 period was extended to December 1 because November 30 fell on a Sunday, and that a Supplemental assessment appeal must be filed within 60 days of the notice of assessment date, consistent with the California State Board of Equalization's certified 2026 county filing-period table.
Tuolumne County's page sets the Regular Assessment filing period as July 2nd through November 30th, and notes that the 2025 deadline shifted to December 1 because November 30 fell on a Sunday.
Tuolumne County directs applicants to mail complete original Application for Changed Assessment forms to the Board Clerk in Sonora; the page does not state a dollar filing fee.
Tuolumne County's Board of Supervisors sits as the local Board of Equalization, and the appeals board has two years from the filing date to hear and decide an appeal.
Tuolumne County spans Sonora and Columbia's Gold Rush foothills up to Yosemite National Park's Tuolumne Meadows and Stanislaus National Forest high country.
Official filing authority: Tuolumne County Board of Supervisors (Local Board of Equalization), Board Clerk. https://www.tuolumnecounty.ca.gov/730/Property-Tax-Assessment-Appeals
Source: Tuolumne County Board of Supervisors, Property Tax Assessment Appeals, https://www.tuolumnecounty.ca.gov/730/Property-Tax-Assessment-Appeals. Reviewed 2026-09-22.
Source: Tuolumne County Assessor, Decline in Value / Assessment Appeals, https://www.tuolumnecounty.ca.gov/732/Decline-in-Value-Assessment-Appeals. 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.
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