California bills · 2025-2026 Regular Session
California AB 1704
Greenhouse gases: embodied carbon building materials.
- Introduced
- In committee
- Passed House
- Passed Senate
- To Governor
- Became law
Sponsors
- Mark González (Democratic)
Summary
Official abstract published by the California legislature· summary
Existing law requires, by December 31, 2026, the State Air Resources Board, in consultation with relevant stakeholders, as provided, to develop a framework for measuring the average carbon intensity of the materials used in the construction of new buildings, including those for residential uses. Existing law requires, by December 31, 2028, the state board to develop a comprehensive strategy for the state's building sector to achieve a 40% net reduction in greenhouse gas emissions of building materials, as specified, as soon as possible, but no later than December 31, 2035. Existing law authorizes the state board to establish an embodied carbon trading system, as defined, in compliance with these requirements, as provided.
This bill would require the state board to determine whether using building materials with lower embodied carbon would be cost effective during the first 2-year period of their use compared to using conventional building materials before implementing the above-described provisions. If the state board determines that using building materials with lower embodied carbon would not be cost effective during the first 2-year period of their use compared to using conventional building materials, the bill would require the state board to delay or suspend, as applicable, implementation of those provisions for not less than 5 years, not to exceed 10 years in total.
Text versions
- 06/23/26 - Amended Senate· Jun 23, 2026
- 04/08/26 - Amended Assembly· Apr 8, 2026
- 03/02/26 - Amended Assembly· Mar 2, 2026
- 02/04/26 - Introduced· Feb 4, 2026
- AB1704
Roll-call votes
State vote data last updated Oct 15, 2026, 8:04 PM.
| Date | Vote | Result | Your legislators |
|---|---|---|---|
| Aug 10, 2026 Senate | Placed on suspense file | pass | Set your home in California to see |
| Jun 17, 2026 Senate | Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] | pass | Set your home in California to see |
| Apr 27, 2026 House | AB 1704 Mark González Assembly Third Reading | pass | Set your home in California to see |
| Apr 22, 2026 House | Do pass. | pass | Set your home in California to see |
| Apr 6, 2026 House | Do pass as amended and be re-referred to the Committee on [Appropriations] | pass | Set your home in California to see |
Actions
- Aug 13, 2026 · Senate
In committee: Held under submission. - Aug 10, 2026 · Senate
In committee: Referred to APPR. suspense file. - Jul 29, 2026 · Senate
In committee: Hearing postponed by committee. - Jun 23, 2026 · Senate
Read second time and amended. Re-referred to Com. on APPR. - Jun 22, 2026 · Senate
From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 6. Noes 0.) (June 17). - May 27, 2026 · Senate
In committee: Set, first hearing. Hearing canceled at the request of author. - May 6, 2026 · Senate
Referred to Com. on E.Q. - Apr 28, 2026 · Senate
In Senate. Read first time. To Com. on RLS. for assignment. - Apr 27, 2026 · House
Read third time. Passed. Ordered to the Senate. (Ayes 59. Noes 0. Page 4836.) - Apr 23, 2026 · House
Read second time. Ordered to third reading. - Apr 22, 2026 · House
From committee: Do pass. (Ayes 13. Noes 0.) (April 22). - Apr 9, 2026 · House
Re-referred to Com. on APPR. - Apr 8, 2026 · House
Read second time and amended. - Apr 7, 2026 · House
From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 11. Noes 0.) (April 6). - Mar 3, 2026 · House
Re-referred to Com. on NAT. RES. - Mar 2, 2026 · House
From committee chair, with author's amendments: Amend, and re-refer to Com. on NAT. RES. Read second time and amended. - Mar 2, 2026 · House
Referred to Com. on NAT. RES. - Feb 5, 2026 · House
From printer. May be heard in committee March 7. - Feb 4, 2026 · House
Read first time. To print.