Cal. Public Contract Code § 10210

(a) The department, in each design-build request for proposals, may identify specific types of subcontractors that must be included in the design-build entity statement of qualifications and proposal. All construction subcontractors that are identified in the proposal shall be afforded all the protections of Chapter 4 (commencing with Section 4100) of Part 1. (b) Following award of the design-build contract, the design-build entity shall proceed as follows in awarding construction subcontracts with a value exceeding one-half of 1 percent of the contract price allocable to construction work: (1) Provide public notice of availability of work to be subcontracted in accordance with the publication requirements applicable to the competitive bidding process of the department, including a fixed date and time on which qualifications statements, bids, or proposals will be due. (2) Establish reasonable qualification criteria and standards. (3) Award the subcontract either on a best value basis or to the lowest responsible bidder. The process may include prequalification or short-listing. The foregoing process does not apply to construction subcontractors listed in the original proposal. Subcontractors awarded construction subcontracts under this subdivision shall be afforded all the protections of Chapter 4 (commencing with Section 4100) of Part 1.