California property tax appeals

Deadline

California's regular assessment appeal window runs from 2 July through 15 September 2027, and ends 30 November 2027 instead in a county whose assessor does not mail value notices to every secured-roll owner by 1 August. (Cal. Rev. & Tax. Code 1603(b)(1) and (b)(3))

First level

County assessment appeals board or county board of equalization (RTC 1601 et seq.)

Next levels

Superior court

General information, not legal or tax advice. The notice and local rules control.