CA Civ Code Section 8520

(a)

A person that has a lien right under Chapter 4 (commencing with Section 8400), other than a direct contractor, may give the owner a stop payment notice.

(b)

The owner may give notice, in compliance with the requirements of Chapter 2 (commencing with Section 8100) of Title 1, demanding that a person that has a lien right under Chapter 4 (commencing with Section 8400) give the owner a stop payment notice. If the person fails to give the owner a bonded or unbonded stop payment notice, the person forfeits the right to a lien under Chapter 4 (commencing with Section 8400).