California’s SB 415 Leaves Some AB 98 Questions Unanswered

California warehouse law has become the land-use equivalent of assembling furniture with 900 pieces, two missing screws, and a manual written by three committees. Assembly Bill 98, signed in 2024, created statewide rules for logistics use developments, truck routes, warehouse setbacks, buffers, energy standards, housing replacement, and air-quality monitoring. Senate Bill 415, signed in 2025, arrived as the cleanup bill meant to tighten the bolts.

And yes, SB 415 does clean up a lot. It clarifies key definitions, adjusts truck-route obligations, narrows certain requirements, gives smaller jurisdictions more time, and makes the law easier to apply in rural and agricultural areas. But it does not answer every question raised by AB 98. For developers, city planners, logistics operators, residents, environmental advocates, and local governments, the big issue is not whether SB 415 matters. It does. The issue is whether it provides enough certainty before major warehouse projects move through California’s already crowded permitting pipeline.

This article breaks down what SB 415 changed, why AB 98 remains controversial, and which practical questions are still sitting on the loading dock waiting for pickup.

What AB 98 Tried to Do

AB 98 was designed to regulate new and expanded logistics use developments across California, with special attention to the Inland Empire, where warehouse growth has reshaped neighborhoods, local roads, job markets, and air-quality debates. The law targets projects that involve warehouse-style movement or storage of goods, especially where heavy-duty trucks are central to operations.

At its core, AB 98 requires certain logistics projects to meet design, siting, operational, and routing standards. These include setbacks from sensitive receptors, buffer areas with walls and landscaping, separate heavy-duty truck access, truck routing plans, anti-idling signage, electric vehicle readiness, solar and battery-related building features, and zero-emission equipment expectations where feasible.

The law also places obligations on local governments. Cities and counties must update circulation elements or adopt truck-route ordinances so heavy-duty freight traffic avoids residential neighborhoods and sensitive receptors as much as possible. Sensitive receptors generally include homes, schools, daycares, nursing homes, hospitals, and certain parks. In plain English: the law is trying to keep diesel trucks away from places where children, seniors, patients, and residents breathe, sleep, learn, and play.

Why AB 98 Became So Controversial

AB 98 did not land quietly. Supporters saw it as a long-overdue public-health measure in communities that have lived with warehouse traffic, noise, diesel emissions, and road damage for years. Critics argued that the bill was rushed, broad, expensive, and difficult to implement. Local governments worried about unfunded mandates. Developers worried about project feasibility. Business groups warned that limiting warehouse sites could increase transportation distances, costs, and supply-chain pressure. Environmental justice advocates, meanwhile, argued that AB 98 still did not go far enough to protect frontline communities.

That is the awkward middle seat AB 98 occupies: too strict for some, too weak for others, and complicated enough to make even seasoned land-use attorneys reach for extra coffee.

The law’s statewide approach also raised local-control concerns. California cities and counties are used to making land-use decisions through zoning, general plans, environmental review, traffic studies, and project-specific conditions. AB 98 inserted a statewide warehouse rulebook into that process. The rulebook may be necessary, depending on whom you ask, but it still changes the balance between state policy and local discretion.

What SB 415 Changes

SB 415 is best understood as a cleanup and clarification bill, not a full rewrite. It keeps AB 98’s basic framework intact while trying to make the law more workable.

SB 415 Clarifies “Logistics Use Development”

One major change is terminology. AB 98 used phrases that created uncertainty, including “logistics use,” “logistics facility,” and “logistics use development.” SB 415 standardizes the language around “logistics use development,” generally defining it as a building primarily used as a warehouse for the movement or storage of cargo, goods, or products moved to business or retail customers, where heavy-duty trucks are primarily involved.

That clarification matters because not every large industrial building is a warehouse in the legal sense. A manufacturing plant with some distribution activity should not automatically be treated like a regional fulfillment center. A public-facing retail store with stockrooms should not be treated like a truck-heavy logistics hub. SB 415 tries to draw that line more clearly.

SB 415 Adds or Refines Exemptions

The bill excludes certain facilities from the logistics use development definition, including facilities where food or household goods are sold directly to consumers and are accessible to the public, buildings primarily served by rail, strategic intermodal facilities, and certain short-season agricultural buildings. For agricultural uses, SB 415 recognizes that a small facility used for seasonal packing or processing is not the same thing as a year-round distribution center with nonstop truck activity.

This is especially important outside major metropolitan areas. Rural counties argued that AB 98’s original structure could sweep in agricultural and local-serving uses that were never the real target of the law. SB 415 responds to that concern, though not perfectly.

SB 415 Narrows the Warehouse Concentration Region

AB 98 created special rules for the warehouse concentration region, a term focused on Riverside and San Bernardino Counties and specific Inland Empire cities. SB 415 clarifies that the county references mean the unincorporated areas of Riverside and San Bernardino Counties, along with named cities such as Chino, Colton, Fontana, Jurupa Valley, Moreno Valley, Ontario, Perris, Rancho Cucamonga, Redlands, Rialto, Riverside, and San Bernardino.

That clarification is not just a geography lesson. It affects deadlines, truck-route planning, project standards, and enforcement exposure. In land-use law, where one boundary line can decide whether a project lives, dies, or enters a five-year permitting swamp, a cleaner map is a big deal.

SB 415 Adjusts Truck Route Requirements

SB 415 gives more detail on what kinds of roads may serve logistics use developments. Truck routes should maximize the use of highways, arterial roads, major thoroughfares, and local roads that predominantly serve commercial, agricultural, or industrial uses. It also clarifies how to measure whether a local road predominantly serves those uses: more than 50 percent of the properties fronting the road within 1,000 feet of the site’s truck entrances and exits must be designated for commercial, agricultural, or industrial use.

That sounds technical because it is. But it matters in practice. A project may look viable on a zoning map until the access road fails the 50 percent test. Then the applicant must consider alternate access, traffic analysis, waivers, or redesign. The law is essentially telling developers: “Your building does not exist in isolation. Your trucks have to get there somehow, and that ‘somehow’ now counts.”

SB 415 Gives Smaller Jurisdictions More Time

AB 98 set aggressive deadlines for local governments to update circulation elements and truck routes. SB 415 adds more breathing room for smaller cities and counties outside the warehouse concentration region. Larger jurisdictions generally face earlier compliance timelines, while smaller jurisdictions may receive additional time to adopt required ordinances.

This change acknowledges a basic reality: a small city planning department is not a vending machine where you insert a statute and receive a truck-route ordinance by lunch. Staff capacity, consultant budgets, public hearings, mapping, traffic analysis, and community outreach all take time.

The Big Questions SB 415 Still Does Not Fully Answer

SB 415 improves AB 98, but several practical issues remain unresolved. These unanswered AB 98 questions are where future disputes, local interpretations, and possibly more cleanup legislation may emerge.

Question 1: What Does “Primarily Used as a Warehouse” Really Mean?

SB 415 narrows the definition of logistics use development, but “primarily used” remains a phrase that invites interpretation. Does “primarily” mean most floor area? Most revenue? Most truck trips? Most employee time? Most operational purpose? A building may include manufacturing, assembly, cold storage, office space, returns processing, retail pickup, and distribution under one roof. The law does not provide a simple percentage test for every scenario.

For example, imagine a food production facility where 55 percent of the floor area is used for processing and 45 percent is used for storage and outbound truck loading. Is that a manufacturing facility with ancillary warehousing, or a logistics use development wearing a hairnet? SB 415 helps, but it does not eliminate the need for project-by-project judgment.

Question 2: How Will “Feasible” Be Applied?

Several AB 98 and SB 415 requirements use feasibility language. Loading bays must be oriented away from sensitive receptors to the extent feasible. Zero-emission forklifts and certain equipment requirements depend on operational feasibility, commercial availability, and adequate power. In theory, this flexibility prevents absurd outcomes. In practice, it creates room for disagreement.

Developers may argue that site constraints, utility limitations, topography, rail access, fire access, or circulation design make full compliance infeasible. Community advocates may respond that “infeasible” should not become the magic word that makes protections disappear. Local governments will need to decide what evidence is enough. A one-page memo probably should not carry the day. A detailed engineering, utility, traffic, and site-planning analysis may be more persuasive.

Question 3: Can Local Governments Go Further?

SB 415 clarifies that cities and counties may deny logistics use developments or adopt rules that prohibit new or expanded logistics uses on certain parcels. It also limits local rules that physically preclude required features of a compliant logistics project. That leaves an important question: how far can local governments go beyond the state floor?

Can a city require a larger setback than AB 98? Can it impose stricter truck hours, stronger buffers, additional air filtration, or more robust community benefits? The answer may depend on how the local rule is drafted and whether it conflicts with state law. This is one area where future litigation or Attorney General guidance could shape the real-world meaning of SB 415.

Question 4: Who Pays for the Planning Work?

Truck-route planning is not free. Local governments may need consultants, traffic engineers, GIS mapping, public outreach, environmental review, signage, staff reports, and hearings. SB 415 gives some jurisdictions more time, but time is not money, despite what every motivational poster in a coworking space says.

The law states that local agencies have authority to levy fees or assessments sufficient to pay for required programs, but that does not end the debate. Higher fees can become another cost layered onto development, including housing and commercial projects. Smaller jurisdictions may still struggle to fund technical work before a new logistics application even appears.

Question 5: How Will Truck Route Enforcement Actually Work?

Designating truck routes is one thing. Keeping trucks on those routes is another. SB 415 requires signage, public GIS maps, and truck routing plans. It also directs training related to commercial vehicle and truck-route enforcement. But enforcement will still depend on local police, code enforcement, California Highway Patrol coordination, driver compliance, dispatch instructions, GPS routing systems, and the practical realities of freight movement.

A route map does not stop a driver from following an outdated navigation app through a residential shortcut. A sign does not automatically prevent idling near a school. The unanswered question is whether enforcement will be consistent enough to make the rules meaningful without creating chaos for drivers who are trying to reach lawful destinations.

Question 6: What Happens When Communities Change Around Warehouses?

AB 98 and SB 415 focus heavily on the relationship between logistics projects and sensitive receptors. But communities are not frozen in amber. A daycare can open near an industrial corridor. A park can be redesigned for children. Housing can be approved near existing truck routes. A school can expand. A warehouse project may enter entitlement before a new sensitive use appears nearby.

The law provides some protections for projects already in the entitlement process, but edge cases remain. Future conflicts may arise when industrial planning, housing production, and community-serving uses collide on the same map. California wants more housing, cleaner air, efficient freight, and stronger environmental justice protections. Getting all four at once is possible, but nobody should pretend it is easy.

Question 7: Will Air Monitoring Lead to Action?

AB 98 requires air monitoring in communities near operational logistics use developments in Riverside and San Bernardino Counties, subject to appropriations. SB 415 modifies how the South Coast Air Quality Management District may use monitoring and measurement data. That raises a key policy question: what happens after the data is collected?

Monitoring can identify pollution patterns, but monitoring alone does not reduce emissions. Communities will want to know whether data will trigger enforcement, mitigation, operational changes, future setbacks, or funding priorities. Without a clear bridge from measurement to action, air monitoring risks becoming a very expensive way to confirm what residents already suspected: living next to diesel-heavy freight activity can be rough on the lungs.

Question 8: How Will Housing Replacement Rules Interact With Other Housing Laws?

AB 98 requires two-to-one replacement of certain demolished housing units and rental assistance for displaced tenants when residential dwellings are affected through purchase. SB 415 clarifies that these requirements do not override other housing replacement laws, including protections connected to California’s housing crisis framework.

That clarification is useful, but implementation may still be complex. Developers, housing departments, planning staff, and tenant advocates will need to determine sequencing, affordability levels, deed restrictions, fee use, timing, and whether additional obligations apply. In a state where housing law already has enough acronyms to fill a cereal box, layering logistics rules on top requires careful coordination.

Why These Unanswered Questions Matter

The unanswered questions are not academic. They affect whether a project gets financed, whether a city approves an application, whether a neighborhood sees fewer trucks, whether a business expands in California, and whether warehouse-adjacent communities experience measurable health improvements.

For developers, uncertainty increases risk. A site that looks compliant during acquisition may later face truck-route, buffer, or sensitive-receptor issues. For local governments, uncertainty increases staff burden and legal exposure. For residents, uncertainty can feel like another loophole. For freight operators, uncertainty complicates route planning, facility design, and operational costs.

The most practical takeaway is this: SB 415 makes AB 98 more usable, but not plug-and-play. Anyone touching a warehouse project in California should treat compliance as an early-stage strategy, not a final checklist before certificate of occupancy.

Specific Example: A Mixed-Use Industrial Project Near Homes

Consider a hypothetical 300,000-square-foot project in Southern California. It includes a light manufacturing component, storage, loading bays, office space, and heavy-duty truck traffic. A residential neighborhood sits 700 feet from the proposed loading bays, and a daycare operates nearby. The site is zoned industrial, but the access road includes a mix of commercial and residential frontage.

Under AB 98 as amended by SB 415, the project team must first determine whether the building is primarily a logistics use development. If yes, the 900-foot sensitive receptor trigger becomes critical. The team then evaluates whether the loading bays must be at least 300 feet from the nearest sensitive receptor property line, whether loading bays can be oriented away from homes, whether internal truck circulation avoids receptor-adjacent sides, and whether required buffers can fit on the site.

Next comes truck access. If the local road does not predominantly serve commercial, agricultural, or industrial uses within the required measurement area, the applicant may need a different route, a waiver, or significant mitigation. The city must also consider its adopted truck-route plan, signage obligations, and circulation element compliance.

That single project could raise nearly every unresolved question: what is “primarily” a warehouse, what is feasible, how strict can local standards be, and how much evidence is enough? This is why SB 415’s clarifications matter, and also why they are not the end of the story.

Experience-Based Perspective: What California Communities and Project Teams May Feel Next

In practice, the experience of dealing with SB 415 and AB 98 will probably feel different depending on where you sit at the table. A city planner may experience the law as a deadline machine. There are maps to update, ordinances to draft, public hearings to schedule, and residents who want answers now, not after the consultant finishes “Phase 2 stakeholder outreach.” Even well-run planning departments may feel squeezed between state mandates, local politics, and applicants asking whether their project can still move forward.

For a developer, the experience may feel like due diligence on hard mode. In the past, a warehouse site analysis might focus on zoning, CEQA, utilities, freeway access, lease demand, and construction costs. Now the team must also study sensitive receptor distances, truck-route eligibility, internal circulation, buffer geometry, zero-emission equipment readiness, power availability, housing replacement exposure, and whether a project is a logistics use development in the first place. A parcel that looks beautiful on a broker flyer may become less beautiful once someone measures 900 feet to a school playground.

For residents, the experience is more personal. A truck route is not just a line on a map when it passes near your home. It is the sound at 5:30 a.m., the dust on the windowsill, the nervous walk to school, the cracked pavement, and the feeling that regional commerce is using your block as a shortcut. SB 415 may seem technical, but for warehouse-adjacent communities, technical language translates into daily life. A 300-foot setback, a 500-foot setback, or a “to the extent feasible” exception can mean real differences in noise, light, traffic, and air quality.

For logistics operators, the experience may be operationally frustrating but manageable if planning begins early. Drivers need clear routing instructions. Dispatch software must reflect local truck routes. On-site signs must match approved plans. Loading operations may need anti-idling procedures, electrical hookups, and redesigned circulation. The companies that adapt fastest will likely be those that treat compliance as part of logistics management, not just legal paperwork.

For local elected officials, SB 415 and AB 98 create a balancing act with no applause guaranteed. Approve too much warehouse development, and residents may accuse the city of sacrificing health and quality of life. Restrict projects too aggressively, and businesses may warn about jobs, tax revenue, and supply-chain costs. Follow the state minimum, and environmental advocates may say the city failed to lead. Go beyond the state minimum, and industry groups may raise conflict or feasibility concerns. It is not exactly a relaxing day at the zoning spa.

The best real-world experience under SB 415 will likely come from early communication. Developers should meet with city staff before site plans harden. Cities should involve residents before truck routes feel predetermined. Operators should test routing plans before opening day. Communities should ask for understandable maps, not just legal notices. And everyone should assume that the first few years of implementation will involve interpretation, adjustment, and probably a few very long public meetings.

Conclusion

California’s SB 415 is a meaningful fix to AB 98, but it is not a magic eraser. It clarifies definitions, refines exemptions, adjusts truck-route rules, narrows the warehouse concentration region, and gives certain jurisdictions more practical timelines. Those changes make the law easier to understand and, in many cases, easier to implement.

Still, important AB 98 questions remain unanswered. How will “primarily used as a warehouse” be measured? What evidence proves infeasibility? How far can local governments go beyond state standards? Who pays for implementation? How will truck routes be enforced? Will air monitoring lead to meaningful mitigation? These are not minor footnotes. They are the questions that will shape California warehouse development for years.

For now, the safest approach is early planning, detailed documentation, serious community engagement, and a healthy respect for maps, measurements, and definitions. SB 415 may have cleaned up the statute, but California’s warehouse debate is still very much under construction.

Note: This article is for informational editorial purposes only and should not be treated as legal advice. Project teams, agencies, and property owners should consult qualified California land-use counsel before relying on SB 415 or AB 98 for a specific development decision.