SB 326 establishes the California Wildfire Mitigation Strategic Planning Act to produce three coordinated planning products — a Wildfire Risk Mitigation Planning Framework, a Wildfire Risk Baseline and Forecast, and an annually updated Wildfire Mitigation Scenarios Report — designed to make wildfire investments comparable, targetable, and quantitatively evaluated. The bill requires the Office of the State Fire Marshal’s Deputy Director of Community Wildfire Preparedness and Mitigation to prepare these products in consultation with the state hazard mitigation officer, contract with private quantitative‑modeling experts, and make analytical baselines and recommendations publicly available.
The bill also changes implementation rules on defensible space and ember‑resistant 'zone zero' measures: it conditions state grant funding on local adoption of zone zero ordinances, provides time‑limited grants for local inspector positions to accelerate early compliance, and directs the State Fire Marshal to propose expanding fire protection building standards to apply to the reconstruction of buildings destroyed in future wildfires. Those changes aim to couple centralized risk analysis with local execution — but they also create new compliance triggers and resource dependencies for local governments and property owners.
At a Glance
What It Does
Requires the deputy director to produce a Framework (every 3 years), a Forecast (every 3 years), and an annually updated Scenarios Report; each product must enable geospatial comparison of mitigation actions and be submitted to the Legislature and energy safety and utility regulators. The bill directs the deputy director to hire private quantitative consultants and expands the local assistance grant program to fund risk‑targeted projects and time‑limited inspector positions tied to early implementation of the ember‑resistant 'zone zero' rules.
Who It Affects
State Fire Marshal/Cal Fire staff, county and municipal governments that administer defensible‑space programs, utilities that file wildfire mitigation plans, local code officials and building industry stakeholders, insurers and homeowners in high and very high fire hazard zones.
Why It Matters
SB 326 centralizes quantitative, geospatial decision‑support for wildfire investments and conditions grant dollars on local adoption of ember‑resistant zone rules — shifting the policy emphasis from ad hoc projects to a coordinated, data‑driven portfolio approach intended to maximize risk‑reduction per dollar.
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What This Bill Actually Does
The act creates a statutory planning architecture to make wildfire mitigation choices comparable and targetable. The centerpiece is a Framework that defines how to measure and compare mitigation actions — from community fuel treatments to home hardening — on the common scale of reduced expected losses per dollar spent.
The Framework is explicitly meant to be geospatial: it should let planners map where a given investment will deliver the greatest reduction in human, structural, and ecosystem consequences. The deputy director must make the analytical basis available online so decision makers and the public can see the assumptions behind rankings and comparisons.
Paired with the Framework are two iterative analytic products. The Forecast establishes baseline ignition risk and consequences, defines key risk metrics, and sets 1‑, 3‑, and 10‑year targets for risk reduction; it also requires projections under 'business‑as‑usual' mitigation.
The Scenarios Report takes the targets and planned spending and asks: given current and plausible investment levels, how much risk will be eliminated, and which mixes of actions deliver the most risk reduction for a given budget? That report quantifies 'risk‑to‑spend' efficiency across planned actions and produces one or more cost‑constrained strategies that maximize statewide risk reduction.To do the heavy lifting, the deputy director must contract with private consultants that specialize in quantitative risk modeling for both landscape‑scale fuel treatments and home hardening/defensible space impacts.
The local assistance grant program is recast to pay for projects selected using the Framework, for technical assistance, and for time‑limited inspector capacity to help early ‘zone zero’ implementation. Grants for inspector positions are limited to incremental positions and the equipment needed to carry out parcel inspections, and recipients must report standardized inspection metrics back to the deputy director.On building standards, the bill directs the State Fire Marshal to propose extending certain fire protection building standards so they apply to reconstruction of buildings destroyed within wildfire perimeters occurring on or after the operative date the bill sets.
The ember‑resistant 'zone zero' concept — a treated zone close to a structure that minimizes ignition from wind‑blown embers — is reinforced in the defensible‑space rules, but the bill also ties enforcement and inspection practice changes to legislative appropriation so enforcement ramps up only if funding follows.
The Five Things You Need to Know
The deputy director must enable geospatial evaluation of mitigation actions and measure 'risk to spend efficiency' — the monetized reduction in expected wildfire consequences per dollar spent.
Local inspector grant funds are expressly limited to incremental inspector positions and necessary vehicles, uniforms, technology, and equipment; those funds may not be used for general administrative costs or staff beyond parcel inspections.
Local agencies that accept early inspector grant funds must adopt an ordinance applying the ember‑resistant 'zone zero' regulations to existing structures in very high fire hazard severity zones as a condition of receipt.
Grant recipients must submit an annual dataset with standard metrics: baseline inspections, additional inspections performed, unique parcels inspected, number of homes fully compliant with defensible space (including zone zero), and disposition of noncompliant homes.
The deputy director must hire private consultants with distinct expertise in (a) community/landscape‑scale fuel modification modeling and (b) home hardening and defensible space risk reduction modeling to support the Framework, Forecast, and Scenarios Report.
Section-by-Section Breakdown
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Creates the California Wildfire Mitigation Strategic Planning Act
This new part defines key terms (Framework, Forecast, Report, risk to spend efficiency) and gives the Deputy Director of Community Wildfire Preparedness and Mitigation statutory authority to develop the three analytic products the act requires. Making these definitions statutory forces all downstream work — grant targeting, reporting, and coordination with utilities — to reference a common vocabulary. That has practical knock‑on effects: grant eligibility, project selection, and interagency coordination will be judged against the Framework’s metrics and definitions.
Wildfire Risk Mitigation Planning Framework — scope and contents
The Framework must be capable of quantitatively comparing mitigation actions and should include who is responsible for each action, the costs, targeted risk events and consequences, geographic application, personnel needs, interactions among activities, and methods for estimating cost‑effectiveness and risk‑to‑spend efficiency. Operationally, that means planners will need standardized benefit and cost inputs, agreed modeling conventions for co‑benefits and joint impacts, and a way to inventory and score interventions so that apples‑to‑apples comparisons are possible across vastly different activities (e.g., prescribed fire vs. home retrofit). The statute also requires the deputy director to publish the factual and analytical basis for the Framework online to the maximum extent possible.
Wildfire Risk Baseline and Forecast — metrics and targets
The Forecast must estimate current ignition risk and consequences across multiple consequence categories (life, structures, infrastructure, ecosystems, public health), produce key risk metrics, and set 1‑, 3‑, and 10‑year targets for risk reduction. It must also produce projections under current mitigation efforts. The Forecast is explicitly tied to other planning instruments (utility wildfire mitigation plans and local hazard mitigation plans) so its numbers can be used to align investment plans and to assess whether statewide targets are being met over time.
Wildfire Mitigation Scenarios Report — spending scenarios and prioritization
The Scenarios Report is the budgetary stress test: it identifies plausible ranges of mitigation spending, inventories planned actions across state, federal, utility, local, and private actors, quantifies achieved risk reduction relative to the baseline, and ranks strategies by risk‑to‑spend efficiency. The report must offer one or more cost‑constrained portfolios that maximize estimated risk reduction for roughly the same cost as planned spending. Practically, this gives policymakers a menu of trade‑off‑aware options when assembling budgets or allocating discretionary grant funding.
External quantitative modeling and conditional long‑term grants
The deputy director must retain private consultants with specialized quantitative expertise in both landscape fuel treatments and home hardening/defensible‑space modeling. The statute also creates a contingent, long‑range commitment to make funds available through the local assistance grant program from fiscal 2029–30 through 2044–45, subject to annual appropriations, for local programs that align with the Framework. The contingency language preserves the Legislature’s budget authority while signaling a policy intent to sustain grant support if appropriations are made.
Early 'zone zero' inspector grants and conditions
These sections create a short, funded window for local agencies to apply for grants specifically to hire inspector positions to carry out defensible‑space inspections in very high fire hazard severity zones to facilitate early implementation of ember‑resistant zone rules. The statute caps allowable uses (incremental inspector costs and necessary inspection equipment only), requires recipient local agencies to adopt the zone zero ordinance as a condition of funding, obligates annual standardized reporting, and requires the deputy director to publish the collected data and an evaluation identifying best performers.
Extends State Fire Marshal building‑standard proposals to reconstruction
The State Fire Marshal, working with the Department of Housing and Community Development, must propose extending fire protection building standards — roofs, exterior walls, projections, openings — so that they apply to reconstruction of buildings destroyed within wildfire perimeters that occur on or after the bill’s operative date. That makes rebuilding an explicit trigger for upgraded construction standards, which will affect insurance underwriting, permitting, and rebuilding costs.
Recasts 'fire prevention activities', expands local assistance grant uses, and clarifies ember‑resistant zone implementation
The amendments expand the statutory definition of fire prevention activities to explicitly include projects identified in the new Framework and defensible‑space inspections. The local assistance grant program language is broadened to include planning and risk‑targeted work using the Framework, prioritized support for entities qualified to do defensible‑space assessments, and advance payment rules. Defensible‑space rules reiterate the ember‑resistant zone within five feet of structures and preserve staged compliance for existing structures — but they tie enforcement changes to the availability of appropriated resources.
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Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- Local fire agencies and code enforcement offices — receive targeted grant funding to hire incremental inspector capacity and the analytical tools to prioritize inspections and local mitigation work.
- Homeowners in very high fire hazard severity zones who can access grants and technical assistance — early implementation of ember‑resistant measures and targeted home‑hardening programs aim to reduce home ignition risk.
- State planners, utilities, and regulators — gain standardized, geospatial risk and cost‑effectiveness analytics to better coordinate investments and avoid duplicative spending.
- Conservation and community organizations — become eligible for grants to implement prioritized, multiyear risk‑reduction projects and to receive technical assistance using the Framework.
Who Bears the Cost
- Local governments — must adopt zone zero ordinances to access inspector grants and will face new reporting and enforcement responsibilities (even if some inspector costs are covered, other implementation costs and ordinance adoption processes are local obligations).
- Property owners and homeowners — may incur out‑of‑pocket costs to meet ember‑resistant zone requirements, especially where staging of work is impractical or where insurance or local ordinances require more extensive fuel modification.
- State budget and appropriators — many provisions (inspector grants, expanded long‑term grants, and enforcement capacity) are contingent on annual appropriations, creating a fiscal claim that competes with other priorities.
- Development and rebuilding stakeholders — builders, developers, and insurers will face an expanded trigger for higher building standards when reconstructing fire‑destroyed structures, affecting project costs and timelines.
Key Issues
The Core Tension
The bill’s central dilemma is between using centralized, quantitative, and comparable analytics to squeeze the maximum risk reduction from limited mitigation dollars and preserving local discretion and equity: a model‑driven allocation can improve aggregate outcomes but may relegate locally valued projects or impose enforcement burdens on communities that lack resources to comply without sustained funding.
SB 326 centralizes modeling and sets a common metric — risk‑to‑spend efficiency — to prioritize interventions. That approach increases transparency and comparability, but it also imports the familiar risks of model dependence: the outputs will be sensitive to assumptions about ignition probability, suppression capacity, asset valuation, co‑benefits, and discounting.
Regions that see lower modeled returns (for example, where human exposure is low but ecological values are high) could lose out on discretionary funding even if local stakeholders view treatments as vital for other reasons. The bill tries to mitigate that by requiring public posting of analytic bases and by allowing other factors in project selection, but tension remains between model‑driven prioritization and locally determined needs.
Another implementation tension lies in the funding‑enforcement linkage. The bill conditions improved inspection and enforcement activity on legislative appropriations and requires local ordinance adoption to receive inspector grants.
That reduces the risk that unfunded mandates will be imposed, but it also creates a timing mismatch: the ember‑resistant zone requirements exist in statute, enforcement practices cannot change without funding, and local governments may be pressed to adopt ordinances whose enforcement they cannot sustain without continued appropriations. Finally, the mandatory use of private consultants for core modeling work centralizes technical capability but raises questions about procurement standards, reproducibility of results, and reliance on proprietary models—issues that will matter for judicial review, interagency trust, and public confidence.
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