Civil Code § 8304
CHAPTER 3. Design Professionals Lien
A design professional is not entitled to a lien under this chapter unless all of the following conditions are satisfied:
(a) The work of improvement for which the design professional provided services has not commenced.
(b) The landowner defaults in a payment required under the contract or refuses to pay the demand of the design professional made under the contract.
(c) Not less than 10 days before recording a claim of lien, the design professional gives the landowner notice making a demand for payment, and stating that a default has occurred under the contract and the amount of the default.
(d) The design professional records a claim of lien. The claim of lien shall include all of the following information:
(1) The name of the design professional.
(2) The amount of the claim.
(3) The current owner of record of the site.
(4) A legal description of the site.
(5) Identification of the building permit or other governmental approval for the work of improvement.