California 2025-2026 Regular Session

California Assembly Bill AB399

Introduced
2/4/25  
Refer
2/18/25  
Report Pass
3/25/25  
Refer
3/25/25  
Refer
4/9/25  
Report Pass
5/23/25  
Engrossed
6/2/25  
Refer
6/3/25  
Refer
6/11/25  
Report Pass
6/24/25  
Refer
6/25/25  
Refer
7/7/25  
Report Pass
8/29/25  
Enrolled
9/8/25  
Enrolled
9/8/25  

Caption

Coastal resources: coastal development permits: blue carbon demonstration projects.

Impact

If enacted, AB 399 would have a substantial effect on existing environmental regulations and practices related to coastal development in California. It would integrate new requirements regarding blue carbon projects into the permitting process for coastal development, thereby steering resources and investment towards habitat restoration initiatives. The bill is expected to assist in meeting California's ambition to conserve at least 30 percent of the state’s land and coastal waters by 2030 while simultaneously tackling greenhouse gas emissions through improved ecosystem management.

Summary

Assembly Bill 399, introduced by Assembly Member Boerner, aims to enhance California's efforts in combating climate change through the implementation of blue carbon demonstration projects. These projects focus on the restoration of coastal wetlands, subtidal, intertidal, and marine habitats, enabling the state to demonstrate and quantify their carbon sequestration potential. The bill outlines that applicants of nonresidential projects, which impact coastal resources, may be mandated to build or contribute to such blue carbon projects as a form of mitigation. This legislative initiative is aligned with California's broader climate goals, including reducing carbon emissions significantly by 2030 and 2050, respectively.

Sentiment

The public and legislative sentiment around AB 399 appears to be largely favorable among environmental groups and proponents advocating for climate action. Supporters argue that the bill could serve as a significant step toward enhancing coastal resilience and robust carbon management strategies. However, there might be concerns among certain stakeholders about the potential regulatory burden on developers and the implications of additional requirements added to the existing coastal permitting processes. The necessity of balancing economic development with environmental protection encapsulates the ongoing debate related to this bill.

Contention

As AB 399 proceeds through the legislature, notable points of contention may arise, particularly regarding the balance of ecological restoration efforts with the interests of developers. While environmentalists may emphasize the urgent need for habitat restoration for climate benefits, some may argue against the added compliance costs and potential delays in project timelines imposed by the bill. The involvement of various state agencies, including the California Coastal Commission and State Air Resources Board, in monitoring and consultation processes will be crucial to address any concerns as the bill evolves.

Companion Bills

No companion bills found.

Previously Filed As

CA AB1740

Coastal resources: local coastal program: coastal development permits: City of Santa Monica.

CA SB484

Coastal resources: coastal development permits: infill area categorical exclusion.

CA AB14

Coastal resources: Protecting Blue Whales and Blue Skies Program.

CA SB1229

Coastal resources: coastal development permits: disaster exemption.

CA AB357

Coastal resources: coastal development permit application: higher education housing project.

CA AB1023

Coastal resources: coastal development permits and procedures: Zero Emissions Port Electrification and Operations project.

CA SB1318

Coastal resources: local coastal program: coastal development permit: non-owner-occupied short-term rentals.

CA SB963

California Coastal Act of 1976: coastal development permits: appeal: de novo review.

CA AB2051

Public resources: Coastal Resilience Permitting Working Group.

CA AB1448

Coastal resources: California Coastal Sanctuary: tidelands and submerged lands: oil and gas development.

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