Assessment Appeals is separate from the Assessor's Office and was established to decide disputes between property owners and the Assessor's Office. It is staffed from within the Clerk of the Board by the Assessment Appeals Clerk. Disputes are heard by the Assessment Appeals Board, which is composed of members appointed by the Board of Supervisors.

For the current agenda, Click Here.

For an application for a changed assessment on your property,  Click Here.

An application fee of $40 will be required to process an application, per Ordinance 2011-12. 

To view an information booklet on the Agenda Appeals process, Click Here.

For local rules on assessment appeals please, Click Here.


A finding of fact fee of $10 will be required only when an appeal is reviewed by the Assessment Appeals Board.

Once completed, mail application to:
Assessment Appeals Clerk, 651 Pine Street, Room 106, Martinez, CA  94553

Regular Assessment Appeals must be filed between July 2 and November 30 of each calendar year.

Supplemental or Escape assessments must be filed within 60 days of the notice from the Assessor.

Board of Supervisors Link:  Click Here

County Home Page Link:     Click Here

County Administrator Link: Click Here

For more information about the Assessment Appeals process:                      Click Here.

File an informal review with the Assessor's Office at the following link:             Click Here.

For California Board of Equalization forms, please click on the following link: Click Here.