SB 1423 California Senate · 2025-2026 Regular Session

Regional planning: standardized spatial planning datasets.

Summary
Existing law establishes the Office of Land Use and Climate Innovation in the Governor's office for the purpose of serving the Governor and the Governor's cabinet as staff for long-range planning and research and constituting the comprehensive state planning agency. This bill would require the office, on or before July 1, 2028, to compile, standardize, maintain, and make publicly available through a consolidated online platform a core set of statewide standardized spatial planning datasets, as defined. The bill would require the datasets to include specified categories of information, including hazardous data, natural resource sensitivity data, and agricultural value data, as provided. The bill would also require the office, on or before January 1, 2029, to develop and provide guidance for agencies to inform how to use and integrate the datasets in regional planning processes and products. The bill would require the office to update those datasets as new or revised data becomes available from the originating state or federal agencies. This bill would permit state, regional, and local governments to consider use of the standardized spatial planning datasets published by the office in the development and production of land use and infrastructure plans, as specified. The bill would require the office to provide technical assistance, upon request, for use of the data from these provisions. The bill would specify that it does not create new regulatory requirements, regulate land use or zoning, establish land use designations, or preempt the local land use authority of cities and counties.
Bill status passed both 4 of 5 stages cleared
Introduction
Feb 2026
Committee Review
Aug 2026
Senate Passage
May 2026
Assembly Passage
Aug 2026
Governor
Introduced Feb 20, 2026 Last action Aug 30, 2026
Maddy AI version diff · 6 comparisons

What changed between versions

06/10/26 - Amended Assembly 06/22/26 - Amended Assembly · 9 edits · Jun 22, 2026
MAJOR
The amended version removes the Active Transportation Program study provisions entirely, shifts the core requirement from mandatory to permissive for state, regional, and local governments, adds explicit language clarifying the bill does not regulate land use or preempt local authority, and expands the types of planning documents where datasets may be used. The overall effect is to reframe the bill as a voluntary data-informed planning tool rather than a compliance mandate.
Scope change
The bill's scope narrowed significantly: it no longer mandates that regional planning agencies use the datasets (now permissive), no longer includes the Active Transportation Program study, and now explicitly disclaims any regulatory or preemptive effect on local land use authority. The applicable entities broadened from only regional planning agencies to all state, regional, and local governments, but with a voluntary rather than mandatory obligation.
SCOPE

The entire Active Transportation Program study requirement (former Section 2386 of the Streets and Highways Code) was deleted, removing the obligation for the California Transportation Commission to study equity, accessibility, cost-effectiveness, and ease of application for that program by January 1, 2028.

The requirement changed from mandatory to permissive: regional planning agencies previously 'shall incorporate and use' the datasets, but now 'State, regional, and local governments may consider use of' them. This fundamentally shifts the bill from a compliance mandate to a voluntary tool.

New language explicitly states that nothing in the bill creates new regulatory requirements, regulates land use or zoning, establishes land use designations, or preempts the local land use authority of cities and counties.

General plans (Section 65300), regional housing needs allocations processes (Section 65584), and climate action plans were added as types of planning documents where the datasets may be considered.

Agricultural value data now includes farmland of 'statewide and local importance' rather than only 'statewide importance,' broadening the category.

DEFINITION

The term 'Centralized online platform' was renamed to 'Consolidated online platform,' and the definition now specifies it provides access to datasets 'as a decision support tool.'

REQUIREMENT

The provision about using other data changed from encouraging agencies to use more precise or stringent local data, to explicitly stating that nothing in the bill restricts agencies from using more precise or current data available at the regional or local level.

ENFORCEMENT

Technical assistance language changed from supporting 'compliance with this section' to supporting 'use of data pursuant to this section upon request,' consistent with the shift away from mandatory compliance.

TECHNICAL

The state-mandated local program designation appears to have changed, consistent with the bill's shift from mandatory to permissive requirements on local agencies.

Floor votes · Senate May 27, 2026 · Assembly Aug 27, 2026

How they voted

299
Passed · 2 other
Total votes 40
May 27, 2026
D Democratic30
29 Yea 1
96% Yea
R Republican10
9 Nay 1
90% Nay
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
34
Key actions
14
Committee
10
Amendments
9
Aug 30, 2026
Upper · Passed
Assembly amendments concurred in. (Ayes 28. Noes 10.) Ordered to engrossing and enrolling.
upper
Aug 28, 2026
Upper · Passed
From committee: That the Assembly amendments be concurred in. (Ayes 5. Noes 2.)
upper
Aug 28, 2026
Upper · Passed
From committee: Be re-referred to Com. on L. GOV. pursuant to Senate Rule 29.10(d). (Ayes 5. Noes 0.) Re-referred to Com. on L. GOV.
upper
Aug 28, 2026
Committee
Re-referred to Com. on RLS. pursuant to Senate Rule 29.10(d).
upper
Aug 28, 2026
Introduced
In Senate. Concurrence in Assembly amendments pending.
upper
Aug 27, 2026
Lower · Passed
Read third time. Passed. Ordered to the Senate.
lower
Aug 13, 2026
Lower · Passed
Read second time and amended. Ordered to second reading.
lower
Aug 13, 2026
Lower · Passed
From committee: Do pass as amended. (Ayes 11. Noes 3.) (August 13).
lower
Jul 2, 2026
Lower · Passed
From committee: Do pass and re-refer to Com. on APPR. (Ayes 8. Noes 1.) (July 1). Re-referred to Com. on APPR.
lower
Jun 22, 2026
Lower · Passed
From committee with author's amendments. Read second time and amended. Re-referred to Com. on L. GOV.
lower
Jun 15, 2026
Committee
Re-referred to Com. on L. GOV. pursuant to Assembly Rule 96.
lower
Jun 10, 2026
Lower · Passed
From committee with author's amendments. Read second time and amended. Re-referred to Com. on TRANS.
lower
Jun 4, 2026
Committee
Referred to Com. on TRANS.
lower
May 27, 2026
Upper · Passed
Read third time. Passed. (Ayes 29. Noes 9. Page 4495.) Ordered to the Assembly.
upper
May 14, 2026
Upper · Passed
From committee: Do pass. (Ayes 5. Noes 0. Page 4276.) (May 14).
upper
Apr 23, 2026
Upper · Passed
Read second time and amended. Re-referred to Com. on APPR.
upper
Apr 22, 2026
Upper · Passed
From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 8. Noes 1. Page 3986.) (April 21).
upper
Apr 8, 2026
Committee
Re-referred to Com. on TRANS.
upper
Mar 26, 2026
Committee
Re-referred to Com. on RLS.
upper
Mar 25, 2026
Upper · Passed
From committee with author's amendments. Read second time and amended. Re-referred to Com. on E.M.
upper
Mar 4, 2026
Committee
Referred to Coms. on E.M. and N.R. & W.
upper
Feb 20, 2026
Introduced
Introduced. To Com. on RLS. for assignment. To print.
upper
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Henry Stern
Henry Stern
DDemocratic
CA
27