California Code, Health and Safety Code - HSC § 18929

(a) Except as otherwise provided in subdivision (b), administrative regulations adopted by state agencies that apply directly to the implementation or enforcement of building standards shall be forwarded to the California Building Standards Commission for approval. Each regulation shall be adopted in compliance with the procedures specified in Section 18930 and in Article 5 (commencing with Section 11346) of Chapter 3.5 of Part 1 of Division 3 of Title 2 of the Government Code. These administrative regulations shall be published in the administrative part of the California Building Standards Code.

(b) This section shall not apply to any regulations adopted by the Department of Housing and Community Development that apply directly to the implementation or enforcement of building standards.