Embodied Carbon
In September 2022, Governor Newsom signed Assembly Bill 2446 (Holden), which requires CARB to develop a framework for measuring and reducing the embodied carbon of building construction materials, primarily at the materials production stage, with a target of a 40 percent net reduction in GHG emissions no later than the end of 2035, and an interim target of a 20 percent net reduction by the end of 2030.
More about this program
Submit Comments to the October 30, 2025 Reporting Technical Meeting
CARB Embodied Carbon staff appreciate written public comments relating to our October 30, 2025 Embodied Carbon Reporting Technical Meeting.
Materials from that meeting are available on the Technical Meeting Materials page of the CARB Embodied Carbon website.
This comment docket is currently open and will close at 11:59 p.m. PST on Monday, December 8, 2025. Please note that submitted comments and attached materials will be posted publicly.
