What is the Threshold for CALGreen?
There is no size threshold — CALGreen applies to ALL projects, even:
What Triggers the Requirement for Embodied Carbon in CALGreen (Nonresidential)?
Only for nonresidential projects ≥100,000 ft²:
What Does CALGreen Apply To?
All building types:
When Did CALGreen Start?
Year Milestone 2008 First mandatory CALGreen (basic measures) 2010 Full enforcement begins 2022 Current version (EV readiness, MERV 13, waste diversion) 2025 Your permit falls under 2022 CALGreen
Where is CALGreen Required?
Everywhere in California — 100% of cities and counties, including Monrovia, Los Angeles County, and all unincorporated areas. No opt-out. No exceptions. Even a 200 ft² backyard ADU must comply.
What is the Difference Between CALGreen and the California Energy Code?
Code Focus Title 24 Part CALGreen Green building (water, waste, materials, IAQ, EV, health) Part 11 Energy Code Energy efficiency (insulation, HVAC, lighting, TDV) Part 6 They work together: Your ADU needs both — CF1R for energy, CALGreen checklist for green.
What is CALGreen?
CALGreen is the California Green Building Standards Code — Part 11 of the California Code of Regulations. It’s the nation’s first statewide green building code, setting mandatory minimum standards for sustainability in all new construction, additions, and alterations across California.