Cal. Revenue and Taxation Code § 7892

Notice of the sale and the time and place thereof shall be given to the delinquent supplier and to all persons who have an interest of record in the property in writing at least 20 days before the date set for the sale in the following manner: The notice shall be personally served or enclosed in an envelope addressed to the supplier or other person at his or her last known residence or place of business in this state. If not personally served, the notice shall be deposited in the United States mail, postage prepaid. The notice shall be published pursuant to Section 6063 of the Government Code, in a newspaper of general circulation published in the city in which the property or a part thereof is situated if any part thereof is situated in a city or, if not, in a newspaper of general circulation published in the county in which the property or a part thereof is located. Notice shall also be posted in both of the following manners: (a) One public place in the city in which the interest in property is to be sold if it is to be sold in a city or, if not to be sold in a city, one public place in the county in which the interest in the property is to be sold. (b) One conspicuous place on the property. The notice shall contain a description of the property to be sold, a statement of the amount of the taxes, penalties, interest, and costs, the name of the supplier, and the further statement that unless the taxes, penalties, interest, and costs are paid on or before the time fixed in the notice for the sale, the property, or so much of it as may be necessary, will be sold in accordance with law and the notice.