Revenue and Taxation Code § 3966
CHAPTER 10. Rights of Purchaser of Tax-Deeded Property, or Any Other Person Claiming Through Him, to Bring Action to Determine Adverse Claims to or Clouds Upon Tax-Deeded Property Purchased From the State
If the right, title, interest, lien or estate of a known or unknown defendant established by the decree of the court, is based upon a special assessment or arises from a special assessment, the decree establishing such rights shall direct the treasurer to cancel the special assessments on his records.