California Code, Civil Code - CIV § 918

Upon receipt of the offer to repair, the homeowner shall have 30 days to authorize the builder to proceed with the repair.  The homeowner may alternatively request, at the homeowner's sole option and discretion, that the builder provide the names, addresses, telephone numbers, and license numbers for up to three alternative contractors who are not owned or financially controlled by the builder and who regularly conduct business in the county where the structure is located.  If the homeowner so elects, the builder is entitled to an additional noninvasive inspection, to occur at a mutually convenient date and time within 20 days of the election, so as to permit the other proposed contractors to review the proposed site of the repair.  Within 35 days after the request of the homeowner for alternative contractors, the builder shall present the homeowner with a choice of contractors.  Within 20 days after that presentation, the homeowner shall authorize the builder or one of the alternative contractors to perform the repair.