California Codes, Code of Civil Procedure - CCP, Part 2 — Of Civil Actions, Title 10 — Actions in Particular Cases, Chapter 4.6 — Actions Concerning Real Property Titles Affected by Public Improvement Assessments, Section 801.1

An action may be brought to determine adverse interests in, liens or clouds upon title to real property arising out of any public improvement assessment or any bond issued to represent such assessment where the lien of such assessment or bond is presumed to have been extinguished under the provisions of Section 2911 of the Civil Code, or to determine adverse interests in, liens or clouds upon title to real property by reason of any certificate issued on sale made to satisfy any public improvement assessment or bond where such sale was made more than four years prior to the commencement of the action and no deed pursuant thereto has been issued prior to the commencement of the action or prior to January 1, 1951, whichever is the later.