Cal. SHC § 10428

From the date of the recordation pursuant to Sections 3114 and 3115, each special assessment levied under this division is a lien upon the land upon which it is levied. This lien is paramount to all other liens, except prior assessments and taxation. Unless sooner discharged, the lien continues for a period of 10 years from the date of the recordation or, if bonds are issued to represent the assessment, until the expiration of four years after the due date of the last installment on the bonds or of the last principal coupon attached thereto. All persons have constructive notice of this lien from the date of the recordation.