Cal. Pub. Cont. Code § 10505

(a) The Regents of the University of California may perform projects with university employees if the regents deem that the award of a contract, the acceptance of bids, or the acceptance of further bids is not in the best interests of the university, under either of the following circumstances:
1. (1) The value of the project to be so performed shall not exceed fifty thousand dollars ($50,000).
2. (2) The project is for the erection, construction, alteration, repair, or improvement of experimental, diagnostic, or specialized research equipment.
(b) This section does not apply to the painting or repainting of a structure, building, road, or improvement of any kind if the value of the painting or repainting project exceeds twenty-five thousand dollars ($25,000).