Cal. Health & Saf. Code § 33828
The notice shall be published pursuant to Section 6066 of the Government Code, the first publication of which shall be at least 20 days prior to the date set for hearing. Copies of the notice shall (1) be mailed by first class mail, postage prepaid, to the owners of property in the proposed special assessment area at the addresses of such owners as shown on the last equalized assessment roll used for tax purposes or as otherwise known to the clerk, (2) be mailed postage prepaid to the occupants of property in the proposed special assessment area, and (3) be posted conspicuously on all streets within the proposed special assessment area, not more than 300 feet apart on each street so posted, but not less than three in all. If property assessed pursuant to Section 19 of Article XIII of the Constitution is within such special assessment area, such notice shall be mailed to the owner of such property as shown on the roll last transmitted by the State Board of Equalization to the county auditor.
Ca. Health and Saf. Code § 33828