The current edition of CCR Title 24 includes:
Part 1, named the California Building Standards Administrative Code;
Part 2, Volume 1 and 2, named the California Building Code and is based on the 2009 International Building Code;
Part 2.5, named the California Residential Code and is based on the 2009 International Residential Code;
Part 3, named the California Electrical Code and is based on the 2008 National Electrical Code;
Part 4, named the California Mechanical Code and is based on the 2009 Uniform Mechanical Code;
Part 5, named the California Plumbing Code and is based on the 2009 Uniform Plumbing Code;
Part 6, named the California Energy Code;
Part 7, currently vacant;
Part 8, named the State Historical Building Code;
Part 9, named the California Fire Code and is based on the 2009 International Fire Code;
Part 10, named the California Existing Building Code and is based the 2009 International Existing Building Code;
Part 11, named the California Green Building Standards Code, and is also called the CALGreen Code;
Part 12, named the California Reference Standards Code