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SB-1256 • 2026

Subdivision Map Act: action or proceeding.

Subdivision Map Act: action or proceeding.

Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
Jones
Last action
2026-04-22
Official status
From committee with author's amendments. Read second time and amended. Re-referred to Com. on L. GOV.
Effective date
Not listed

Plain English Breakdown

The official source material does not provide specific details on how ongoing or future legal cases will be affected, nor does it define the criteria for determining 'substantially similar' claims.

Subdivision Map Act: Limiting Legal Challenges

This law stops people from filing lawsuits about subdivision map decisions if those claims are substantially similar to ones made in earlier lawsuits about environmental reviews involving the same local agency.

What This Bill Does

  • It prevents lawsuits about subdivision maps when those lawsuits have claims that are very similar to ones made in earlier lawsuits about environmental rules.
  • If someone has already sued a local agency over an environmental review, they can't sue again for the same reasons regarding the same project's map approval.

Who It Names or Affects

  • Local agencies that make decisions on land development and subdivisions
  • People who file lawsuits against local agencies for not following environmental rules or map approval procedures

Terms To Know

Subdivision Map Act
A law that controls how new neighborhoods are planned, designed, and approved by local governments.
California Environmental Quality Act (CEQA)
A state law requiring government agencies to consider the environmental effects of their actions before approving projects.

Limits and Unknowns

  • The bill does not specify what happens if a new lawsuit is filed after the time limit for CEQA-related lawsuits has passed.
  • It's unclear how this will affect ongoing or future legal cases that involve both subdivision maps and environmental reviews.
  • The exact criteria for determining when claims are 'substantially similar' are not defined in the bill.

Bill History

  1. 2026-04-22 California Legislative Information

    From committee with author's amendments. Read second time and amended. Re-referred to Com. on L. GOV.

  2. 2026-04-22 California Legislative Information

    From committee: Do pass and re-refer to Com. on L. GOV. with recommendation: To consent calendar. (Ayes 13. Noes 0.) (April 21). Re-referred to Com. on L. GOV.

  3. 2026-04-17 California Legislative Information

    Set for hearing April 29 in L. GOV. pending receipt.

  4. 2026-04-10 California Legislative Information

    Set for hearing April 21.

  5. 2026-04-08 California Legislative Information

    Re-referred to Coms. on JUD. and L. GOV.

  6. 2026-03-26 California Legislative Information

    Re-referred to Com. on RLS.

  7. 2026-03-26 California Legislative Information

    Withdrawn from committee.

  8. 2026-03-26 California Legislative Information

    April 8 hearing postponed by committee.

  9. 2026-03-25 California Legislative Information

    From committee with author's amendments. Read second time and amended. Re-referred to Com. on E.Q.

  10. 2026-03-10 California Legislative Information

    Set for hearing April 8.

  11. 2026-03-04 California Legislative Information

    Referred to Coms. on E.Q. and E., U & C.

  12. 2026-02-20 California Legislative Information

    From printer. May be acted upon on or after March 22.

  13. 2026-02-19 California Legislative Information

    Introduced. Read first time. To Com. on RLS. for assignment. To print.

Official Summary Text

SB 1256, as amended, Jones.
Subdivision Map Act: action or proceeding.
The California Environmental Quality Act (CEQA) requires a lead agency, as defined, to prepare, or cause to be prepared, and certify the completion of an environmental impact report on a project that it proposes to carry out or approve that may have a significant effect on the environment or to adopt a negative declaration if it finds that the project will not have that effect. CEQA also requires a lead agency to prepare a mitigated negative declaration for a project that may have a significant effect on the environment if revisions in the project would avoid or mitigate that effect and there is no substantial evidence that the project, as revised, would have a significant effect on the environment. CEQA requires that an action or proceeding to attack, review, set aside, void, or annul specified acts or decisions of a public agency on the grounds of noncompliance with CEQA be commenced
in accordance with specified timeframes.
Existing law, the Subdivision Map Act, vests the authority to regulate and control the design and improvement of subdivisions in the legislative body of a local agency and sets forth procedures governing the local agency’s processing, approval, conditional approval or disapproval, and filing of tentative, final, and parcel maps, and the modification thereof. The act requires an action or proceeding against a decision of a local agency taken pursuant to that act to be commenced within a certain time period, as specified.
This bill would prohibit an action or proceeding to enforce the Subdivision Map Act from being maintained, if certain criteria exist, including that the action or proceeding to enforce the Subdivision Map Act includes substantially similar claims
or issues
to
claims
or issues
raised in an action or proceeding to enforce CEQA and the defendant in the action or proceeding to enforce the Subdivision Map Act was the defendant in the action or proceeding to enforce CEQA.

Current Bill Text

Read the full stored bill text
Download Bill PDF