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History and Development

The Green Building Guidelines are a comprehensive resource of best practices for green building. They offer recommendations for improving indoor air quality, increasing energy and water efficiency, conserving natural resources, and planning for livable and vibrant communities.

The original New Home Guidelines were based on the Alameda County New Home Construction Green Building Guidelines, which were written collaboratively by builders, green building experts, and in 2000. The Guidelines were updated in 2005 to apply statewide, address changes in Title 24, and incorporate measures from other residential green building initiatives.

This update was informed by the Green Residential Environmental Action Team (GREAT), a task force of state agencies including the California Integrated Waste Management Board, California Energy Commission, Office of Environmental Health Hazard Assessment, Office of the State Architect, Department of General Services, Department of Water Resources, and California Air Resources Board.

Updates to the Guidelines

Build It Green's Green Building Guidelines are revised periodically. Check back for announcements about Guideline updates. Summaries of previous Guidelines changes and updates are available for you to review. If you would like more information on previous updates, please email