Cal. Pub. Cont. Code § 22044.5

If the commission makes a finding, in accordance with Section 22043, on three separate occasions within a 10-year period, that the work undertaken by a public agency falls within any of the categories described in Section 22042, the commission shall notify the public agency of that finding in writing by certified mail and the public agency shall not use the bidding procedures provided by this article for five years from the date of the commission’s findings.