California 20252026 Regular Session Status: Introduced 1 D cosponsors

AB 1704 — Greenhouse gases: embodied carbon building materials.

Last action — In committee: Held under submission.

  1. 1
    Introduced
  2. 2
    In Committee
  3. 3
    Passed Assembly
  4. 4
    Passed Senate
  5. 5
    To Executive
  6. 6
    Enacted

This bill has been introduced in the Assembly. Introduced February 04, 2026. It must pass committee before a floor vote.

Next likely step: a committee referral and hearing.

Odds of enactment

Low chance

Based on the sponsor, cosponsors, and committee posture, this bill has a low chance of becoming law.

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A statistical estimate from our own model of past outcomes — an insight, not a guarantee. Policymaking is volatile.

Prognosis

Stalled 28% · moderate confidence

  • Introduced

    Current position in the legislative process.

  • 1 sponsor

    1 primary, 0 co-sponsors signed on.

  • Single-party support

    Sponsorship is currently within one party (1 D).

  • Cleared a recorded vote

    Passed 5 recorded votes so far.

Based on stage, sponsorship breadth, committee status, recorded votes, and cross-state momentum — a description of the observable signals, not a prediction.

In plain language

The bill assesses cost-effectiveness of low embodied carbon building materials before new regulations are implemented.

This bill requires the state to evaluate whether low embodied carbon building materials are cost-effective in the first two years before enforcing regulations aimed at reducing greenhouse gas emissions from building materials. If not cost-effective, implementation may be delayed for up to 10 years.

What this means for you
  • Environment: This bill impacts environmental initiatives by potentially delaying the adoption of lower carbon building materials if found not cost-effective.

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.

Bill Text

Action History

  1. In committee: Held under submission.

  2. In committee: Referred to APPR. suspense file.

  3. In committee: Hearing postponed by committee.

  4. Read second time and amended. Re-referred to Com. on APPR.

  5. From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 6. Noes 0.) (June 17).

  6. In committee: Set, first hearing. Hearing canceled at the request of author.

  7. Referred to Com. on E.Q.

  8. In Senate. Read first time. To Com. on RLS. for assignment.

  9. Read third time. Passed. Ordered to the Senate. (Ayes 59. Noes 0. Page 4836.)

  10. Read second time. Ordered to third reading.

  11. From committee: Do pass. (Ayes 13. Noes 0.) (April 22).

  12. Re-referred to Com. on APPR.

  13. Read second time and amended.

  14. From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 11. Noes 0.) (April 6).

  15. Re-referred to Com. on NAT. RES.

  16. From committee chair, with author's amendments: Amend, and re-refer to Com. on NAT. RES. Read second time and amended.

  17. Referred to Com. on NAT. RES.

  18. From printer. May be heard in committee March 7.

  19. Read first time. To print.

Sponsors

Sponsorship breakdown

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1 sponsors · 0 co-sponsors · 121 not signed on

Sponsors (1)

Co-sponsors (0)

None.

Not signed on (121)

121 members have not signed on to this bill.

Show all 121 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Votes

Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations]

Passed 6 Yea · 0 Nay · 1 Other
Party YeaNayPresentNot Voting
Democratic 4001
Republican 2000
Total 6001
% of votes cast 86%0%0%14%
How each member voted (7)
Member Party Vote
Allen, Benjamin Democratic Not Voting
Blakespear, Catherine S. Democratic Yea
Gonzalez, Lena A. Democratic Yea
Hurtado, Melissa Democratic Yea
Menjivar, Caroline Democratic Yea
Dahle, Megan Republican Yea
Valladares, Suzette Martinez Republican Yea

Official roll call →

AB 1704 Mark González Assembly Third Reading

Passed 59 Yea · 0 Nay · 21 Other
Party YeaNayPresentNot Voting
Republican 18002
Democratic 400019
Unaffiliated 1000
Total 590021
% of votes cast 74%0%0%26%
How each member voted (80)
Member Party Vote
Ávila Farías — Yea
Addis, Dawn Democratic Not Voting
Aguiar-Curry, Cecilia M. Democratic Yea
Ahrens, Patrick Democratic Yea
Alvarez, David Democratic Yea
Arambula, Joaquin Democratic Yea
Bains, Jasmeet Democratic Not Voting
Bauer-Kahan, Rebecca Democratic Not Voting
Bennett, Steve Democratic Not Voting
Berman, Marc Democratic Yea
Boerner, Tasha Democratic Not Voting
Bonta, Mia Democratic Not Voting
Bryan, Isaac G. Democratic Not Voting
Calderon, Lisa Democratic Yea
Caloza, Jessica Democratic Yea
Carrillo, Juan Democratic Yea
Connolly, Damon Democratic Not Voting
Elhawary, Sade Democratic Yea
Fong, Mike Democratic Yea
Gabriel, Jesse Democratic Not Voting
Garcia, Robert Democratic Yea
Gipson, Mike A. Democratic Yea
González, Mark Democratic Yea
Haney, Matt Democratic Yea
Harabedian, John Democratic Yea
Hart, Gregg Democratic Not Voting
Irwin, Jacqui Democratic Not Voting
Jackson, Corey A. Democratic Yea
Kalra, Ash Democratic Not Voting
Krell, Maggy Democratic Yea
Lee, Alex Democratic Yea
Lowenthal, Josh Democratic Yea
McKinnor, Tina Democratic Yea
Muratsuchi, Al Democratic Not Voting
Nguyen, Stephanie Democratic Yea
Ortega, Liz Democratic Yea
Pacheco, Blanca Democratic Yea
Papan, Diane Democratic Yea
Patel, Darshana R. Democratic Yea
Pellerin, Gail Democratic Yea
Petrie-Norris, Cottie Democratic Not Voting
Quirk-Silva, Sharon Democratic Yea
Ramos, James C. Democratic Yea
Ransom, Rhodesia Democratic Yea
Rivas, Robert Democratic Yea
Rodriguez, Celeste Democratic Not Voting
Rodriguez, Michelle Democratic Yea
Rogers, Chris Democratic Not Voting
Rubio, Blanca E. Democratic Yea
Schiavo, Pilar Democratic Yea
Schultz, Nick Democratic Yea
Sharp-Collins, LaShae Democratic Not Voting
Solache, Jr., José Luis Democratic Yea
Soria, Esmeralda Democratic Yea
Stefani, Catherine Democratic Not Voting
Valencia, Avelino Democratic Yea
Ward, Christopher M. Democratic Yea
Wicks, Buffy Democratic Yea
Wilson, Lori D. Democratic Yea
Zbur, Rick Chavez Democratic Not Voting
Alanis, Juan Republican Yea
Castillo, Leticia Republican Yea
Chen, Phillip Republican Yea
Davies, Laurie Republican Yea
DeMaio, Carl Republican Yea
Dixon, Diane Republican Yea
Ellis, Stan Republican Not Voting
Flora, Heath Republican Yea
Gallagher, James Republican Yea
Gonzalez, Jeff Republican Yea
Hadwick, Heather Republican Yea
Hoover, Josh Republican Yea
Johnson, Natasha Republican Yea
Lackey, Tom Republican Yea
Macedo, Alexandra Republican Not Voting
Patterson, Joe Republican Yea
Sanchez, Kate Republican Yea
Ta, Tri Republican Yea
Tangipa, David J. Republican Yea
Wallis, Greg Republican Yea

Official roll call →

Do pass.

Passed 13 Yea · 0 Nay · 2 Other
Party YeaNayPresentNot Voting
Republican 4000
Democratic 9002
Total 13002
% of votes cast 87%0%0%13%
How each member voted (15)
Member Party Vote
Arambula, Joaquin Democratic Yea
Calderon, Lisa Democratic Not Voting
Caloza, Jessica Democratic Yea
Fong, Mike Democratic Yea
González, Mark Democratic Yea
Krell, Maggy Democratic Yea
Muratsuchi, Al Democratic Not Voting
Pacheco, Blanca Democratic Yea
Pellerin, Gail Democratic Yea
Solache, Jr., José Luis Democratic Yea
Wicks, Buffy Democratic Yea
Dixon, Diane Republican Yea
Hoover, Josh Republican Yea
Ta, Tri Republican Yea
Tangipa, David J. Republican Yea

Official roll call →

Do pass as amended and be re-referred to the Committee on [Appropriations]

Passed 11 Yea · 0 Nay · 3 Other
Party YeaNayPresentNot Voting
Republican 4000
Democratic 7003
Total 11003
% of votes cast 79%0%0%21%
How each member voted (14)
Member Party Vote
Boerner, Tasha Democratic Yea
Bryan, Isaac G. Democratic Yea
Connolly, Damon Democratic Not Voting
Garcia, Robert Democratic Yea
Haney, Matt Democratic Yea
Kalra, Ash Democratic Not Voting
Pellerin, Gail Democratic Yea
Schultz, Nick Democratic Yea
Wicks, Buffy Democratic Yea
Zbur, Rick Chavez Democratic Not Voting
Alanis, Juan Republican Yea
Ellis, Stan Republican Yea
Hoover, Josh Republican Yea
Macedo, Alexandra Republican Yea

Official roll call →

Subjects

environment
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Frequently asked questions

What does AB 1704 do?
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.
Who sponsors AB 1704?
AB 1704 is sponsored by González, Mark (Democratic).
What is the current status of AB 1704?
This bill has been introduced in the Assembly. Introduced February 04, 2026. It must pass committee before a floor vote.
Where can I track AB 1704?
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