Cal. CIV § 927

If the applicable statute of limitations has otherwise run during this process, the time period for filing a complaint or other legal remedies for violation of any provision of this title, or for a claim of inadequate repair, is extended from the time of the original claim by the claimant to 100 days after the repair is completed, whether or not the particular violation is the one being repaired. If the builder fails to acknowledge the claim within the time specified, elects not to go through this statutory process, or fails to request an inspection within the time specified, the time period for filing a complaint or other legal remedies for violation of any provision of this title is extended from the time of the original claim by the claimant to 45 days after the time for responding to the notice of claim has expired. If the builder elects to attempt to enforce its own nonadversarial procedure in lieu of the procedure set forth in this chapter, the time period for filing a complaint or other legal remedies for violation of any provision of this part is extended from the time of the original claim by the claimant to 100 days after either the completion of the builder’s alternative nonadversarial procedure, or 100 days after the builder’s alternative nonadversarial procedure is deemed unenforceable, whichever is later.