Section 7029.5.

Cal. Business and Professions Code - BPC § 7029.5.
in effect
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Every C-36 plumbing contractor, C-45 sign contractor, and C-57 well-drilling contractor licensed under this chapter shall have displayed on each side of each motor vehicle used in his or her business, for which a commercial vehicle registration fee has been paid pursuant to Article 3 (commencing with Section 9400) of Chapter 6 of Division 3 of the Vehicle Code, his or her name, permanent business address, and contractor’s license number, all in letters and numerals not less than 1 1 2 inches high. The identification requirements of this section shall also apply to any drill rig used for the drilling of water wells. Failure to comply with this section constitutes a cause for disciplinary action.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026

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