Property Tax Appeals in Calaveras County, California
Calaveras County's Assessor and Assessment Appeals Board (AAB) pages describe regular assessment appeals filed with the Clerk of the Board from July 2 through November 30. For a supplemental assessment, the AAB page's main guidance uses the later notice date or postmark, but its FAQ uses the later tax-bill date or postmark. The applicable assessment type and county procedure need Clerk confirmation; an owner should not calculate a nonregular deadline from either statement alone. The AAB page offers the application PDF or a copy from the Clerk at 891 Mountain Ranch Road, San Andreas, CA 95249, phone (209) 754-6370. Neither reviewed county page states a dollar filing fee. FairPath can help prepare 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, a supplemental assessment tied to a change of ownership or new construction, or an escape assessment, since each carries its own filing clock. Calaveras County sits in the Sierra Nevada foothills of California's Gold Country, anchored by the county seat of San Andreas and the historic mining towns of Angels Camp and Murphys, with vineyards and orchards spreading through the mid-elevation foothills and forested, more remote parcels rising toward Ebbetts Pass and the Stanislaus National Forest. A property a few miles away can sit in a very different fire-hazard zone, agricultural-preserve status, or access situation, so land use, Williamson Act contract status, and site conditions should be confirmed against the Assessor's record rather than assumed from a map.
Filing process: Calaveras County's AAB page states that, prior to filing, an owner is urged to discuss the basis of the assessment with the Assessor's staff; after filing within the deadline, the owner may still attempt to reach an agreement with the Assessor anytime up to the hearing date. The Assessment Appeal Application is available from the Clerk of the Board of Supervisors/Assessment Appeals Board Clerk at 891 Mountain Ranch Road, San Andreas, CA 95249, by calling (209) 754-6370, or as a downloadable PDF on the county's site; a separate application is required for each parcel. Forty-five days before the scheduled hearing, the Clerk sends a Hearing Notice, and the applicant must return the enclosed Confirmation Notice at least 21 days before the hearing stating whether they will appear, postpone, or withdraw. Property taxes remain due while an appeal is pending; a favorable Board decision produces a refund from the Auditor-Controller in four to six weeks.
Evidence to review: Calaveras County's Assessment Appeals FAQ states that the best evidence for a residential appeal is three comparable property sales, and that the applicant must bring eight copies to present to the Clerk when the application is called at the hearing. The page describes California's 90-day rule: the Assessment Appeals Board cannot consider a sale as comparable if it occurred more than 90 days after the January 1 valuation (lien) date, and it identifies presenting sales outside that window as a common cause of unsuccessful appeals. Build a comparable-sales table showing sale date, price, parcel, community, lot size, living area, age, and condition, weighted toward sales inside the 90-day window. For foothill or agricultural-preserve parcels, document acreage, water access, and wildfire-related site conditions with dated photographs, since fire-hazard designation varies across Calaveras County's terrain.
Current deadline guidance: 2026 regular assessment appeals: July 2 through November 30, 2026. Calaveras County's Assessor lists July 2 through November 30 for regular appeals, consistent with the state Board of Equalization's certified 2026 table. The county's Assessment Appeals Board page gives conflicting supplemental-assessment instructions: its main guidance says 60 days from the later printed notice date or notice postmark, while its FAQ says 60 days from the later tax-bill date or bill postmark. California Revenue and Taxation Code section 1605(b)-(c) generally uses the later notice mailing or postmark date for specified nonregular assessments, with tax-bill or county-resolution exceptions. An applicable county resolution was not verified here. Do not choose the notice or bill as a universal trigger; confirm the assessment type, both documents and postmarks, and controlling procedure with the Clerk of the Board.
Calaveras County's Assessor states the regular filing window runs July 2 through November 30, and its AAB page separately notes the specific date is determined early in the calendar year.
Neither the AAB page nor the Assessor's Assessment Appeal Information page states a dollar filing fee for the Assessment Appeal Application.
The AAB page describes a strict 90-day comparable-sales rule and states that presenting sales outside that window is a common cause of unsuccessful appeals.
Calaveras County spans Gold Country foothill towns like San Andreas, Angels Camp, and Murphys, reaching into forested, fire-prone terrain toward Ebbetts Pass and the Stanislaus National Forest.
Official filing authority: Calaveras County Clerk of the Board of Supervisors, Assessment Appeals Board. https://bos.calaverasgov.us/AAB
Source: Calaveras County Board of Supervisors, Assessment Appeals Board (AAB), https://bos.calaverasgov.us/AAB. Reviewed 2026-09-24.
Source: Calaveras County Assessor, Assessment Appeal Information, https://assessor.calaverasgov.us/Property-Assessment/Assessment-Appeal-Information. 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.
Visit FairPath with JavaScript enabled for the full experience.