Assessment Appeals Board

2025 APPEAL DEADLINE: SEPTEMBER 15, 2025

Click Here to Download Assessment Appeal Application

If you disagree with an assessment made by the Assessor, you have the right to appeal that assessment to the Assessment Appeals Board by filing an Assessment Appeal Application. Additional information about the Assessment Appeals Process can be found on the FAQs page. Once the application has been filed and accepted with the Clerk of the Assessment Appeals Board, a hearing date will be set, at which time you will be notified by mail at least 45 days in advance of the date of your hearing.

Send completed application and filing fee to:

Mono County Clerk's Office
Attn:  Assessment Appeals Board
PO Box 237
Bridgeport, CA  93517-0715

If you recently received an assessment notice or bill and have questions concerning the notice/bill, we recommend you first contact the Mono County Assessor's Office (760) 932-5510 to request an informal assessment review. A representative from that office will be able to answer your questions relative to the purpose of the notice/bill, value, and your rights concerning an informal review. The time to file an appeal is not tolled while someone is seeking informal review by the Assessor's office.

Please Note: Contacting the Assessor's Office does not itself constitute an appeal and that the statutory deadlines for filing a timely appeal with the Clerk's Office are not tolled or extended while a taxpayer communicates with the Assessor's Office.  You may wish to consult your own attorney for advice regarding the deadlines and other requirements for filing an appeal.

Helpful Resource Links:
California State Board of Equalization Appeal Process
Video  - California State Board of Equalization Assessment Appeals
Residential Property Assessment Appeals: "Publication 30"
Assessment Appeals Frequently Asked Questions (FAQs)