Cal. Government Code - GOV § 87450. Section 87450.
(a)
In addition to the provisions of Article 1 (commencing with Section 87100), a state administrative official shall not make, participate in making, or use the official’s official position to influence any governmental decision directly relating to any contract where the state administrative official knows or has reason to know that any party to the contract is a person with whom the state administrative official, or any member of the official’s immediate family, has engaged in any business transaction or transactions on terms not available to members of the public, regarding any investment or interest in real property, or the rendering of goods or services totaling in value one thousand dollars ($1,000) or more within 12 months prior to the time the official action is to be
performed.
(b)
As used in subdivision (a), “state administrative official” has the same meaning as defined in Section 87400.