The CEQA process in California is the environmental review that state and local agencies must run before approving most projects, and it moves through a predictable sequence: decide whether the activity is a project, check for an exemption, conduct an Initial Study if none applies, then prepare either a Negative Declaration or a full Environmental Impact Report depending on what the study finds. How long that takes and what it costs depends on the project. An exemption can be resolved in days. An Environmental Impact Report can run one to three years and cost anywhere from tens of thousands of dollars to well over a million.
When CEQA Applies to Your Project
CEQA defines a project as 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 it out, funds it, or issues a discretionary permit or approval that lets a private party proceed.1California Legislative Information. California Code PRC 21065 – Project Most private developers hit CEQA through that third route. A conditional use permit, a subdivision map, a grading permit involving agency judgment, a zoning change, a general plan amendment — any of those pulls the activity in.2New York Codes, Rules and Regulations. 14 CCR 15378 – Project
The rule looks at “the whole of an action.” Agencies cannot slice a large development into smaller pieces to dodge review. If multiple approvals are needed, everything gets treated as one project.
The line that decides whether CEQA runs at all is discretionary versus ministerial. Discretionary means an official weighs judgment about whether or how to approve. Ministerial means the official checks the application against fixed, objective standards and issues the permit if the boxes are checked.3Legal Information Institute. 14 CCR 15369 – Ministerial A by-right building permit is ministerial. A conditional use permit where a planning commission weighs neighborhood compatibility is discretionary. Ministerial actions are exempt by statute — no CEQA review at all. SB 35 uses this: qualifying affordable housing on eligible infill sites gets a streamlined ministerial approval, but only if the site avoids coastal zones, high fire hazard areas, wetlands, and flood plains, and the project meets every objective zoning and design standard at the time of application.
Exemptions and Where They Fail
Many projects never see an Initial Study because they fit an exemption. There are two kinds, and they behave differently.
Statutory exemptions are written directly into the Public Resources Code. They cover ministerial projects, emergency repairs, disaster response during a governor-declared emergency, and rejected or disapproved projects. The Legislature created these carve-outs, so agencies cannot override them regardless of the environmental effects at stake.
Categorical exemptions cover classes of projects that the Secretary for Natural Resources has determined do not normally have a significant environmental effect.4Legal Information Institute. 14 CCR 15300 – Categorical Exemptions Common ones include minor alterations to existing buildings, small land divisions in urbanized areas, and replacement of an existing commercial structure with one of substantially the same size and purpose. When an agency decides a project qualifies, it can file a Notice of Exemption.5Legal Information Institute. 14 CCR 15062 – Notice of Exemption Filing is optional, but doing it shrinks the lawsuit window from 180 days to 35.
Categorical exemptions can be lost. Six exceptions disqualify a project, and opponents lean on them hard in litigation:6Legal Information Institute. 14 CCR 15300.2 – Exceptions
- The site sits near a hazardous or critical environmental resource that has been officially mapped and designated.
- Successive similar projects in the same area would produce a significant cumulative effect.
- Unusual circumstances create a reasonable possibility of a significant effect. This is the most litigated of the six.
- The project could damage scenic resources along an officially designated state scenic highway.
- The site appears on the hazardous waste list under Government Code Section 65962.5, known as the Cortese List.
- The project could substantially harm the significance of a historical resource.
If any exception applies, the agency must run 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 attract a lawsuit.
The Initial Study
When no exemption applies, the lead agency conducts an Initial Study to determine whether the project could cause significant environmental harm.7Legal Information Institute. 14 CCR 15063 – Initial Study It follows a standardized checklist covering roughly 20 topic areas, from air quality and biological resources to greenhouse gas emissions, hazardous materials, noise, transportation, tribal cultural resources, and wildfire risk. For each topic, the agency marks the impact as potentially significant, less than significant with mitigation, less than significant, or nonexistent.
The result of the Initial Study picks the next document. If the agency already knows a full Environmental Impact Report is coming, it can skip the study and go straight there, though most agencies still prepare one to narrow the analysis.
Negative Declaration or Environmental Impact Report
Three outcomes flow from the Initial Study.
If the study identifies no significant impacts, the agency prepares a Negative Declaration. Nothing rises to the significance threshold, no mitigation is required, and no further study is needed.8New York Codes, Rules and Regulations. 14 CCR Article 6 – Negative Declaration Process
More often, the study finds some potentially significant effects that the applicant agrees to address through project changes or specific conditions. That produces a Mitigated Negative Declaration. The mitigation measures become legally binding conditions of approval. Typical examples: installing sound barriers during construction, relocating a drainage channel to protect a wetland, or scheduling work outside of nesting season. If the measures cut every identified impact below significance, the project avoids a full Environmental Impact Report.
When a project could cause significant environmental effects that cannot be fully mitigated, the agency must prepare an Environmental Impact Report. The document must describe the project in detail, analyze existing environmental conditions, identify every significant impact, and propose feasible mitigation. It must also evaluate a range of reasonable alternatives that could achieve most of the project’s goals with less harm, including a mandatory “no project” alternative.9Legal Information Institute. 14 CCR 15126.6 – Consideration and Discussion of Alternatives to the Proposed Project
An Environmental Impact Report goes through a draft stage, a public comment period, and a final stage where the agency responds in writing to every substantive comment. Preparing one typically takes one to three years and can cost from tens of thousands of dollars for a focused supplement to well over a million for a large development. Courts scrutinize these documents closely, and inadequate analysis is the most common basis for CEQA lawsuits.
Approving a Project With Unavoidable Impacts
An Environmental Impact Report that identifies significant and unavoidable impacts does not automatically kill the project. The agency can still approve, but only after making specific findings for each significant effect: that the project has been changed to avoid the effect, that the necessary changes fall under another agency’s authority and should be adopted there, or that specific considerations make additional mitigation or alternatives infeasible.10California Legislative Information. California Code PRC 21081
For impacts that remain significant after all feasible mitigation, the agency must adopt a Statement of Overriding Considerations. That is a formal finding that the project’s economic, social, technological, or other benefits outweigh the unavoidable environmental harm. The statement must identify those benefits with specificity. A vague assertion that the project will “help the economy” will not survive judicial review. Agencies use overriding considerations for projects they view as essential despite the environmental cost, such as major infrastructure, affordable housing, or job-creating developments.
Public Comment Timelines
Public participation runs through every stage, but the formal comment period is what shapes the schedule and the administrative record. Minimum review periods depend on the document:
- For a Negative Declaration or Mitigated Negative Declaration: at least 20 days, extended to 30 days if the document goes to the State Clearinghouse for state agency review.11Legal Information Institute. 14 CCR 15073 – Public Review of a Proposed Negative Declaration or Mitigated Negative Declaration
- For a Draft Environmental Impact Report: at least 30 days, no longer than 60 except in unusual circumstances, and at least 45 days when the document goes to the State Clearinghouse.
Notice goes out through multiple channels: posting at the county clerk’s office, publishing in newspapers of general circulation, and mailing to nearby property owners. Anyone can submit written comments during the window, and comments enter the official administrative record. The lead agency must respond in writing to every substantive comment before finalizing the document. 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 public comment.
Tribal Consultation Under AB 52
Since July 2015, lead agencies have been required to consult with California Native American tribes before completing environmental review on any project that will need a Negative Declaration, Mitigated Negative Declaration, or Environmental Impact Report. A traditionally and culturally affiliated tribe must first ask, in writing, to be notified of proposed projects. Once the agency determines an application is complete, it has 14 days to send formal written notice to any tribe that made such a request. The tribe then has 30 days from receiving notice to request consultation, and the agency must begin the consultation within 30 days of that request.
Consultation focuses on whether the project could affect tribal cultural resources, including sites, features, places, objects, and landscapes with cultural value to the tribe. It continues until the parties agree on protective measures or until one party, acting in good faith, concludes that agreement cannot be reached. Skipping or rushing this step is a procedural defect that can invalidate the entire environmental review.
Certification, Notice of Determination, and the Lawsuit Clock
After the comment period closes and the agency responds to comments, the decision-making body certifies the final document. Certification means the agency has determined that the document was completed under CEQA, that the decision-makers reviewed and considered it, and that it reflects the agency’s independent judgment.
Once the project is approved, the lead agency files a Notice of Determination. State agencies file with the Governor’s Office of Planning and Research within five working days. Local agencies file with the county clerk of the county where the project is located, also within five working days.12New York Codes, Rules and Regulations. 14 CCR 15094 – Notice of Determination Since January 2024, local agencies must also electronically file their Notices of Determination with the state Office of Land Use and Climate Innovation.13Office of Land Use and Climate Innovation. Environmental Document Submission
Filing the right notice at the right time is not a formality. It sets the deadline for anyone to sue:14California Legislative Information. California Code PRC 21167
- Notice of Determination filed: challengers have 30 days from the filing date to sue over the Environmental Impact Report or Negative Declaration.
- Notice of Exemption filed: challengers have 35 days to argue the project was not properly exempt.
- No notice filed: the statute of limitations stretches to 180 days from project approval or, if there was no formal decision, from the date the project began.
The gap between 30 days and 180 days is the reason to file promptly. Six months is long enough for organized opposition to materialize, secure funding, and retain counsel. For project applicants, confirming that the lead agency actually filed the notice is worth a phone call to the county clerk.
Filing Fees
CEQA filings carry real cost. The main charge 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:
- 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 Department of Fish and Wildlife fee, though a county clerk posting fee applies
County clerks charge a separate posting fee on top of the state amount. Fees are due when the Notice of Determination is filed. If the lead agency obtains a “no effect” determination from the Department of Fish and Wildlife, meaning the project has been found to have no impact on fish and wildlife, only the county clerk’s posting fee applies. Amounts change annually, so confirm current figures with the county clerk or the department before filing.
When Federal Review Also Applies
Projects that need both federal and state approvals can trigger the National Environmental Policy Act alongside CEQA. That happens most often when a project requires a federal permit, such as a Clean Water Act Section 404 permit from the Army Corps of Engineers, uses federal funding, or occupies federal land. Both statutes encourage a joint review to avoid duplicating analysis, outreach, and documentation.15Governor’s Office of Planning and Research. NEPA and CEQA: Integrating Federal and State Environmental Reviews
Joint review does not mean identical requirements. The National Environmental Policy Act does not require mitigation, only disclosure, while CEQA requires agencies to adopt all feasible mitigation. The federal law applies to federal agencies; CEQA applies to state and local agencies. A joint document must satisfy the more demanding requirements of both, which in practice means meeting CEQA’s stricter mitigation and alternatives standards. A federal nexus adds time to the schedule and budget for the coordination between agencies.