CALGreen: California Green Building Standards Code

CALGreen (California Green Building Standards Code) is Part 11 of the California Building Standards Code. It establishes mandatory green building standards for all new construction and major renovations in California, covering site planning, water efficiency, material conservation, environmental quality, and energy performance.

Yes. CALGreen's Tier 1 requirements are mandatory for all new construction and major renovations in California. Tier 2 requirements are voluntary but may be required by some local jurisdictions or incentive programs.

CALGreen and Title 24 are separate parts of the California Building Standards Code. Title 24 Part 6 covers energy efficiency specifically. CALGreen Part 11 covers broader green building practices including water efficiency, indoor air quality, and construction waste. Both apply to permitted construction projects.

CALGreen mandatory requirements for commercial buildings include: storm water pollution prevention, bicycle parking, EV charging infrastructure readiness, water use reduction (20% below baseline), construction waste diversion (65%), low-VOC materials, and outdoor air ventilation requirements.

CALGreen applies to new construction and additions. For tenant improvements and alterations, specific CALGreen requirements may apply depending on the scope of work and local jurisdiction requirements. Consult with GRD Consulting to determine your specific obligations.