The California Building Standards Commission recently approved CALGreen, the nation’s first mandatory statewide green building code (see “Green Goes Mainstream in California,” In the News, 10/08). Scheduled to take effect on January 1, 2011, the new baseline standard calls for a 20 percent reduction in water use, improvements in energy efficiency and interior air quality, and the diversion of at least 50 percent of construction waste from landfills.
In addition, the new code includes two optional levels — CALGreen Tiers I and II — that can be adopted by jurisdictions wishing to require higher levels of performance. In areas where only the baseline code applies, builders can voluntarily comply with one of these higher tiers and receive certification for doing so from the local building...
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