5424. If the address of the owner is not known, and cannot be ascertained by the exercise of reasonable diligence, a copy of the notice shall be mailed to him at the county seat of the county in which the property is situated.(Enacted by Stats. 1967, Ch. 15.)
California Legal Code
§ 5424
Source: https://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=FAC&division=4.&title=&part=1.&chapter=6.&article=2.· Version 2026