Cal. Sts. & High. Code § 35260

Pursuant to Section 54954.6 of the Government Code, the clerk of the legislative body shall mail a copy of the resolution, postage prepaid, to each person to whom real property in the district is assessed as shown on the last equalized assessment roll, at his address as shown upon the roll, and to each person, whether owner in fee or having a lien upon, or legal or equitable interest in, any real property within the district, whose name and address and a designation of the real property in which he or she is interested is on file in the office of the clerk.