Except where the department is specifically vested by this part or by any other provision of law with the authority to adopt rules and regulations, and except as provided in Section 18930, the commission may adopt, amend, and repeal rules and regulations reasonably necessary to carry out this part or by any other provision of law. Any rules and regulations of the commission in effect on September 26, 1975, shall remain in effect until amended or repealed except that building standards, as defined in Section 18909, shall remain in effect only until January 1, 1985,
or until adopted, amended, repealed, or superseded by building standards adopted and published in the California Building Standards Code pursuant to the provisions of Chapter 4 (commencing with Section 18935) of Part 2.5 of Division 13, whichever occurs sooner.