The best place to find the actual text of a regulation or bill is at at www.leginfo.ca.gov
Please keep in mind that not all regulations are listed on the above website, especially Title 5. For the full CCR you should go here: http://government.westlaw.com/linkedslice/search/default.asp?RS=GVT1.0&VR=2.0&SP=CCR-1000
Another important fact is that Title 24, Building Code is not available at the above sites. Title 19, Public Safety is now carried on the CCR website. Both of these Titles are best purchased in hard copy.