CEQA in California: Triggers, Review Tracks, and Deadlines

The California Environmental Quality Act, known as CEQA in California, requires every state and local agency to study and disclose the environmental effects of a project before approving it. Enacted in 1970, the law reaches almost any activity that needs a discretionary government sign-off, from highway expansions and shopping centers to zoning changes and new housing. The review you face can be as light as a one-page exemption notice or as heavy as an Environmental Impact Report that takes years and costs over a million dollars. Which track applies depends on what the project is, who has to approve it, and whether it could harm an environmental resource.

What Triggers CEQA

CEQA applies when a public agency takes an action that qualifies as a “project.” A project is any activity that could cause a direct or reasonably foreseeable indirect physical change in the environment and involves a public agency in one of three ways: the agency carries out the activity itself, the agency funds it, or the agency issues a permit or other approval that lets a private party proceed.1California Legislative Information. California Code PRC 21065 – Project For private developers, that third category is usually the entry point. A conditional use permit, subdivision map, or any approval that calls for agency judgment pulls the activity into CEQA.

The definition is broad on purpose. Government construction, park development, general plan amendments, zoning ordinance changes, and privately-run activities that receive public grants or loans all qualify.2New York Codes, Rules and Regulations. 14 CCR 15378 – Project The rule looks at “the whole of an action,” so an agency cannot carve a large development into smaller pieces to shrink the review.

Discretionary vs. Ministerial Approvals

CEQA only applies to discretionary actions, where an official uses judgment to decide whether and how to approve something. Ministerial actions, where the official just checks the application against fixed objective standards, are exempt.3Legal Information Institute. 14 CCR 15369 – Ministerial A building permit issued because the plans meet every code requirement is ministerial. A conditional use permit decided on neighborhood compatibility is discretionary.

This line matters for housing. Qualifying affordable housing projects on eligible infill sites can be approved ministerially under SB 35, bypassing CEQA entirely, but the eligibility rules are strict. Sites in coastal zones, high fire hazard areas, wetlands, or flood plains do not qualify, and the project has to meet every objective zoning and design standard. If you are not inside a ministerial pathway, you are inside CEQA.

Who Runs the Review

When a project needs approval from more than one agency, CEQA designates one as the “lead agency” responsible for the environmental review. For private developments, that is typically the city or county with primary land-use jurisdiction. For government-initiated projects, it is the agency doing the work. The Governor’s Office of Planning and Research resolves any dispute over which agency leads.

Every other public agency with approval authority becomes a “responsible agency.” Responsible agencies rely on the lead agency’s environmental documents instead of preparing their own, but they decide independently whether the analysis addresses the issues within their jurisdiction.

The Three Review Tracks

Once CEQA applies, the lead agency chooses among three paths based on the project’s likely environmental effects: an exemption, a Negative Declaration (or Mitigated Negative Declaration), or a full Environmental Impact Report.

Exemptions

Many projects never go through formal review because they fit an exemption. Statutory exemptions are written into the Public Resources Code and cover things like emergency repairs, actions during a governor-declared state of emergency, rejected projects, and ministerial approvals. Because the Legislature created them, agencies cannot override them.

Categorical exemptions cover classes of projects the Secretary for Natural Resources has determined do not normally have a significant environmental effect.4Legal Information Institute. 14 CCR 15300 – Categorical Exemptions Common examples include minor alterations to existing buildings, small land divisions in urbanized areas, and replacement of a commercial structure with one of substantially the same size and purpose. When an agency uses an exemption, it may file a Notice of Exemption as a public record.5Legal Information Institute. 14 CCR 15062 – Notice of Exemption Filing is optional, but it cuts the window to sue from 180 days to 35.

The Initial Study and Negative Declarations

If no exemption applies, the lead agency conducts an Initial Study to decide whether the project could cause significant environmental harm.6Legal Information Institute. 14 CCR 15063 – Initial Study The study runs a checklist across roughly 20 topic areas, including air quality, biological resources, cultural resources, greenhouse gas emissions, hazardous materials, hydrology, noise, transportation, tribal cultural resources, and wildfire risk.

If the Initial Study finds no significant impacts, the agency prepares a Negative Declaration.7New York Codes, Rules and Regulations. 14 CCR Article 6 – Negative Declaration Process If it finds impacts the applicant agrees to address through project changes or conditions, the agency issues a Mitigated Negative Declaration. The mitigation measures become legally binding conditions of approval. Typical measures include sound barriers during construction, scheduling work outside nesting season, or relocating a drainage channel to protect a wetland. If every identified impact drops below the significance threshold, the project avoids a full EIR.

Environmental Impact Reports

When a project could cause significant effects that cannot be fully mitigated, CEQA requires an Environmental Impact Report. The EIR describes the project, analyzes existing conditions, identifies every significant impact, proposes feasible mitigation, and evaluates a range of alternatives that could achieve most of the project’s goals with less environmental harm.8Legal Information Institute. 14 CCR 15126.6 – Consideration and Discussion of Alternatives to the Proposed Project Every EIR must include a “no project” alternative.

Preparing an EIR is expensive. Depending on scale and controversy, the process typically takes one to three years and costs anywhere from tens of thousands of dollars for a focused supplement to well over a million for a large development. The document moves through a draft, a public comment period, and a final version in which the agency responds in writing to every substantive comment. Inadequate EIR analysis is the most common basis for CEQA lawsuits.

When an Exemption Can Still Fail

Categorical exemptions are not bulletproof. Six exceptions can disqualify an otherwise-exempt project, and opponents raise them often:9Legal Information Institute. 14 CCR 15300.2 – Exceptions

  • Sensitive location: a project near an officially mapped and designated hazardous or critical environmental resource.
  • Cumulative impact: successive similar projects in the same area that together produce a significant cumulative effect.
  • Unusual circumstances: a reasonable possibility that unusual circumstances will cause a significant effect. This is the most heavily litigated exception.
  • Scenic highways: damage to scenic resources along an officially designated state scenic highway.
  • Hazardous waste sites: sites listed under Government Code Section 65962.5, the Cortese List.
  • Historical resources: substantial harm to the significance of a historical resource.

If any of these applies, the agency has to conduct an Initial Study even if the project otherwise fits an exempt category. Assuming an exemption will hold without analyzing these exceptions is one of the fastest ways to invite a lawsuit.

Public Comment Periods

Public participation is built into every stage of CEQA, but the formal comment period is the part that matters most for anyone considering a legal challenge. Minimum review periods are set by document type:

Agencies give notice by posting at the county clerk’s office, publishing in a newspaper of general circulation, and mailing nearby property owners. Written comments submitted during the window become part of the official administrative record, and the lead agency has to respond in writing to every substantive comment. If you plan to challenge a CEQA decision in court, commenting during this period is critical. Courts generally will not consider issues that were not raised during the public comment process.

Tribal Consultation

Since July 2015, lead agencies have had to consult with California Native American tribes before completing environmental review for any project that requires a Negative Declaration, Mitigated Negative Declaration, or EIR. A tribe traditionally and culturally affiliated with the area first has to request, in writing, that the agency notify it of proposed projects. Once an application is complete, the agency has 14 days to notify any tribe that made such a request. The tribe then has 30 days to request consultation, and the agency has 30 days from that request to begin.

Consultation focuses on tribal cultural resources: sites, features, places, objects, and landscapes with cultural value to the tribe. It continues until the parties agree on protective measures or until one side, acting in good faith, concludes that agreement is not possible. Skipping or rushing this process is a procedural defect that can invalidate the entire environmental review.

Approving a Project Despite Significant Impacts

An EIR that identifies significant and unavoidable impacts does not automatically kill a project. The lead agency can still approve it, but only after making specific findings for each significant effect: that the project has been changed to avoid the effect, that the needed changes belong to another agency’s authority, or that specific considerations make the remaining mitigation or alternatives infeasible.11California Legislative Information. California Code PRC 21081

For impacts that remain significant after all feasible mitigation, the agency has to adopt a Statement of Overriding Considerations. This is a formal finding that the project’s economic, social, technological, or other benefits outweigh the unavoidable harm. The benefits have to be identified with specificity. A vague claim that the project will “help the economy” will not survive judicial review. Agencies invoke overriding considerations for projects they view as essential despite the environmental cost, such as major infrastructure, affordable housing, or job-creating developments.

Deadlines to Sue

Once the project is approved, the lead agency files a Notice of Determination (NOD). State agencies file with the Governor’s Office of Planning and Research within five working days. Local agencies file with the county clerk within the same window.12New York Codes, Rules and Regulations. 14 CCR 15094 – Notice of Determination Since January 2024, local agencies must also electronically file their NODs with the state Office of Land Use and Climate Innovation.13Office of Land Use and Climate Innovation. Environmental Document Submission

The filing drives the statute of limitations:14California Legislative Information. California Code PRC 21167

  • Notice of Determination filed: 30 days from filing to challenge the adequacy of an EIR or Negative Declaration.
  • Notice of Exemption filed: 35 days to argue the project was not properly exempt.
  • No notice filed: 180 days from project approval, or from the start of the project if there was no formal decision.

The gap between 30 days and 180 days is the single most practical reason to file a notice promptly. For applicants, confirming that the lead agency actually filed the notice is worth a call to the county clerk.

Filing Fees

CEQA filings are not free. The bulk of the cost is a state environmental filing fee set by the California Department of Fish and Wildlife, which funds the department’s role in reviewing environmental documents. For 2026 the CDFW fees are:

  • Projects with a Negative Declaration or Mitigated Negative Declaration: $3,043.75
  • Projects with an Environmental Impact Report: $4,227.50
  • Projects with a certified regulatory program document: $1,437.25
  • Notice of Exemption: no CDFW fee, though a county clerk posting fee applies

County clerks charge a separate posting fee on top of the CDFW amount. Fees are due when the Notice of Determination is filed. If CDFW issues a “no effect” determination, only the county clerk’s posting fee applies. These amounts change annually, so check with your county clerk or CDFW before filing.

When Federal Review Also Applies

Projects that need both federal and state approvals may trigger the National Environmental Policy Act alongside CEQA. This usually happens when a project needs a federal permit, such as a Clean Water Act Section 404 permit from the Army Corps of Engineers, uses federal funding, or sits on federal land. Both statutes encourage a joint review to avoid duplicating the analysis.15Governor’s Office of Planning and Research. NEPA and CEQA: Integrating Federal and State Environmental Reviews

Joint review does not mean identical requirements. NEPA requires disclosure but not mitigation; CEQA requires agencies to adopt all feasible mitigation measures. A joint document has to satisfy the stricter of the two, which in practice means meeting CEQA’s mitigation and alternatives standards. If your project has a federal nexus, expect a longer timeline and additional coordination between agencies.