The California Building Code is Part 2 of the California Building Standards Code (BSC). The California Building Standards Code is Title 24 of the California Code of Regulations. You can access the first edition of the Triennial Edition from the California Building Standards Commission website.
Many local (city and county) codes are based on these codes and the California Building Standards Code (see box above). If you are working on a project in a specific area, be sure to find out what codes apply to that jurisdiction.