1. (a) All contractors to whom licenses are issued shall be classified by the Registrar as a specialty contractor, as defined in this article; a general engineering contractor (Class A), as defined in Section 7056 of the Code; or a general building contractor (Class B), as defined in Section 7057 of the Code.
2. (b) Contractors licensed in one classification shall be prohibited from contracting in the field of any other classification unless they are also licensed in that classification or are permitted to do so by Section 831.

Note: Authority cited: Section 7008, Business and Professions Code. Reference: Section 7059, Business and Professions Code.