California Code, Civil Code - CIV § 3065b

As used in the next preceding section the words “the time the person claiming such lien shall have ceased to do or perform the work or render the service for which said lien is claimed” shall be construed to mean the final date work was done or services were rendered on any of the logs, lumber or other manufactured timber products on which the lien is claimed, so as to give the lien claimant, or his assignee or successor in interest, a full thirty days after final cessation of labor to bring suit to foreclose his lien on any or all of the logs, lumber or other manufactured timber products in question.