Santa Clara County, California

Regular assessment appeals must be filed between July 2 and September 15 (or November 30 under the conditional extension above). A mailed application postmarked on the last day of the period counts as filed on time; a deadline falling on a weekend/holiday rolls to the next business day. Governed by California Revenue & Taxation Code Section 1603. If the Assessor does not mail notices of assessed value to all taxpayers by August 1, the filing period is extended to November 30 instead of September 15.