Cal. Civil Code § 8190

(a) An owner that records a notice of completion or cessation shall, within 10 days of the date the notice of completion or cessation is filed for record, give a copy of the notice to all of the following persons: (1) A direct contractor. (2) A claimant that has given the owner preliminary notice. (b) The copy of the notice shall be given in compliance with the requirements of Chapter 2 (commencing with Section 8100) of Title 1. (c) If the owner fails to give notice to a person as required by subdivision (a), the notice is ineffective to shorten the time within which that person may record a claim of lien under Sections 8412 and 8414. The ineffectiveness of the notice is the sole liability of the owner for failure to give notice to a person under subdivision (a). (d) For the purpose of this section, “owner” means a person who has an interest in real property, or the person’s successor in interest on the date a notice of completion or notice of cessation is recorded, who causes a building, improvement, or structure, to be constructed, altered, or repaired on the property. If the property is owned by two or more persons as joint tenants or tenants in common, any one or more of the cotenants may be deemed to be the “owner” within the meaning of this section. However, this section does not apply to any of the following owners: (1) A person that occupies the real property as a personal residence, if the dwelling contains four or fewer residential units. (2) A person that has a security interest in the property. (3) A person that obtains an interest in the property pursuant to a transfer described in subdivision (b), (c), or (d) of Section 1102.2.