The alternative building regulations and building standards authorized under the State Historical Building Code (Part 2.7 (commencing with Section 18950) of Division 13) which have been published in Part 8 of the California Building Standards Code shall be maintained as a separate and distinct part or portion of the California Building Standards Code pursuant to that title.
Source:
Section 18944.7, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=18944.7..