The International Code Council recently published the 2010 California Green Building Standards Code, Title 24, Part 11 -- otherwise known as CALGreen, the nation’s first mandatory statewide green building code which was adopted January 12, 2010 by the California Building Standards Commission. CALGreen will take effect in California on January 1, 2011 along with the other 11 published parts of the 2010 version of Title 24, the California Building Standards Code.