CEQA vs. NEPA comes down to who is approving the project: the California Environmental Quality Act governs discretionary approvals by California state and local agencies, while the National Environmental Policy Act governs major actions by federal agencies. Both were enacted in 1970 and both require decision-makers to study environmental consequences before approving a project, but they cover different actors, follow different timelines, and produce different documents.1US EPA. What Is the National Environmental Policy Act In California, many projects trigger both at once, because a state or local approval can coincide with federal funding, federal land, or a federal permit.
Which Law Applies to Your Project
CEQA is triggered by a “discretionary” action of a California state or local agency that could cause physical changes to the environment. Discretionary means the agency actually exercises judgment: granting a zoning change, issuing a conditional use permit, approving a development plan.2Governor’s Office of Land Use and Climate Innovation. CEQA: The California Environmental Quality Act Ministerial actions, where the agency has no room to say no if the project meets every objective standard in the code, sit outside CEQA entirely. A code-compliant interior remodel, roof replacement, or small addition needs no environmental review. Add a request for a variance and the same project may become discretionary and pull into CEQA.
NEPA applies to “major Federal actions significantly affecting the quality of the human environment.” Under 42 U.S.C. § 4332, federal agencies must prepare a detailed statement covering reasonably foreseeable environmental effects, unavoidable adverse impacts, a reasonable range of alternatives, the relationship between short-term use and long-term productivity, and any irreversible commitments of federal resources.3Office of the Law Revision Counsel. 42 USC 4332 – Cooperation of Agencies; Reports; Availability of Information In practice, that means federal funding, use of federal land, or a federal permit from an agency like the Army Corps of Engineers or the Federal Highway Administration.
The overlap is common in California. A highway expansion that takes federal transportation dollars, or a coastal project that needs a federal wetlands permit, triggers both laws.
The Three Levels of Review, Side by Side
Both statutes use the same basic structure: a fast track for low-impact projects, a middle track when impacts can be mitigated, and a full study when impacts may be significant. The labels differ, and so do some of the mechanics.
Exemptions and Exclusions
Projects in pre-approved low-impact categories can skip detailed study. CEQA calls these categorical exemptions and recognizes more than 30 classes, covering things like minor alterations to existing facilities, small structures, minor land divisions, and qualifying infill development. NEPA calls the same concept a categorical exclusion.4Council on Environmental Quality. Categorical Exclusions
Neither is absolute. Under NEPA, a categorical exclusion cannot be used when “extraordinary circumstances” are present, such as significant impacts on endangered species, wetlands, historic properties, public health, or Indian sacred sites.5eCFR. 43 CFR 46.215 – Categorical Exclusions: Extraordinary Circumstances CEQA has parallel exceptions that block reliance on a categorical exemption where unusual circumstances create a reasonable possibility of significant effects.
The Middle Tier: Negative Declaration vs. Finding of No Significant Impact
When a project does not qualify for an outright exemption but the initial analysis shows impacts can be avoided or reduced below the significance threshold, the agency prepares an intermediate document. Under CEQA, that is a Negative Declaration, or a Mitigated Negative Declaration when the applicant agrees to specific changes to eliminate significant effects. Under NEPA, the equivalent is a Finding of No Significant Impact, issued after an Environmental Assessment.6Environmental Protection Agency. National Environmental Policy Act Review Process
The Mitigated Negative Declaration is where most mid-sized California projects land. The agency identifies potential problems, the applicant commits to mitigation, and the record documents why those measures reduce impacts below the significance line. It avoids the cost and delay of a full impact report, but only if the record genuinely supports the finding.
The Full Study: EIR vs. EIS
When a project may cause significant environmental effects that cannot be mitigated to less-than-significant levels, the agency must prepare the most rigorous document available. CEQA calls it an Environmental Impact Report (EIR). NEPA calls it an Environmental Impact Statement (EIS). Both examine the project’s impacts, evaluate a range of alternatives (including no action), and identify mitigation for unavoidable harm. When both a federal and a state agency are involved, they can prepare a single joint EIS/EIR that satisfies the stricter requirements of both laws.7Bureau of Reclamation. What Is an EIS/EIR
Timelines, Page Limits, and Public Comment
The clock and the length of the document are where the two laws diverge most sharply.
On the NEPA side, the Fiscal Responsibility Act of 2023 imposed hard deadlines for the first time. An EIS must be completed within two years, and an EA within one year, measured from the date the agency decides the document is required, the application is complete, or a Notice of Intent is published, whichever comes first.8Congress.gov. Fiscal Responsibility Act of 2023 Page limits are equally firm: an EIS cannot exceed 150 pages, or 300 pages for projects of “extraordinary complexity,” and an EA is capped at 75 pages. Citations, appendices, maps, graphs, and tables are excluded from the count.9Council on Environmental Quality. NEPA Amendments in Fiscal Responsibility Act of 2023
CEQA does not impose an equivalent overall page cap or fixed multi-year deadline for finishing the document, but it sets firm minimums on public review. A proposed Negative Declaration or Mitigated Negative Declaration must be available for at least 20 days, extending to 30 days when the State Clearinghouse is involved. A draft EIR requires at least 30 days, extending to at least 45 days when routed through the State Clearinghouse. Under NEPA, a draft EIS must be available for a minimum of 45 days, and the agency must wait 30 days after publishing the final EIS before issuing a decision.6Environmental Protection Agency. National Environmental Policy Act Review Process
Agencies must provide written responses to substantive comments that raise specific environmental or procedural issues under both laws. Those responses become part of the administrative record, and courts review them when deciding whether the agency took a “hard look” at the project’s impacts.7Bureau of Reclamation. What Is an EIS/EIR
When Both Laws Apply: Joint Documents
Preparing two separate documents for a single project is expensive and slow. Agencies can enter a Memorandum of Understanding to produce a joint EIS/EIR. In a joint review, the federal and state agencies act as co-leads on the NEPA side, while CEQA still requires a single designated lead agency on the state side. The joint document must meet the stricter of the two frameworks on any given point, and where the two laws conflict on methodology or conclusions, the agencies disclose and explain the differences rather than paper over them.10Council on Environmental Quality. NEPA and CEQA: Integrating Federal and State Environmental Reviews
The 2026 Change to NEPA Regulations
NEPA compliance looks different in 2026 than it did the year before. On January 8, 2026, the Council on Environmental Quality finalized a rule removing all of its centralized NEPA implementing regulations from the Code of Federal Regulations. CEQ concluded it may lack the authority to bind other agencies through rulemaking without the executive order that originally granted that power. NEPA itself did not change, and neither did any agency’s individual NEPA procedures.11Federal Register. Removal of National Environmental Policy Act Implementing Regulations
What did change is uniformity. Each federal agency now follows its own NEPA implementing procedures. CEQ directed agencies to continue applying their existing procedures to the extent consistent with the statute, and it is developing revised guidance and a template. During the transition, agencies may voluntarily look to the version of CEQ’s regulations that was in effect when a specific project review was completed. If your project needs a federal permit or federal funding, check that specific agency’s current NEPA procedures rather than the old centralized rules.
Tribal Consultation Under CEQA
Since 2015, CEQA has required lead agencies to consult with California Native American tribes before releasing an environmental document for a project within a tribe’s traditional territory. Under Public Resources Code § 21080.3.1, the agency has 14 days after finding the application complete to notify any tribe that has previously requested notice in that area. The tribe then has 30 days to request consultation in writing, and the agency must begin consultation within 30 days of that request.12California Legislative Information. California Public Resources Code 21080.3.1
Consultation must occur in good faith to reach agreement on measures protecting tribal cultural resources, and it must be completed before the agency releases a negative declaration, mitigated negative declaration, or EIR. Skipping or shortcutting it is one of the more common grounds for CEQA litigation. NEPA has its own tribal consultation obligations, but the CEQA process is procedurally tighter and more prescriptive.
Filing Fees on the CEQA Side
California charges filing fees to the Department of Fish and Wildlife when environmental documents are submitted. For 2026, the fee for an Environmental Impact Report is $4,227.50, and the fee for a Negative Declaration or Mitigated Negative Declaration is $3,043.75.13California Department of Fish and Wildlife. 2026 Environmental Document Filing Fee Cash Receipt These fund the department’s review of projects affecting biological resources and are separate from consultant costs, agency processing fees, and permit application fees. The county clerk will not accept a Notice of Determination without proof of payment or an approved exemption.
The Litigation Window
CEQA is one of the most litigated environmental laws in the country. Courts can vacate a project approval, require the agency to redo portions of the environmental document, or allow the project to continue under conditions while deficiencies are corrected. The critical filing is the Notice of Determination. Under CEQA, the lead agency must file it within five working days of approval. State agencies file with the Office of Planning and Research; local agencies file with the county clerk.14Cornell Law Institute. California Code of Regulations Title 14 15094 – Notice of Determination
A properly filed Notice of Determination triggers a 30-day statute of limitations for court challenges to the project approval. Miss that window and the claim is generally barred. Opponents who did not raise an issue during the public comment period may also be barred from raising it in court. If an agency fails to file a proper Notice of Determination, the limitations period may never start running at all. From the applicant’s side, the best defense is a thorough record: a defensible initial study, documented tribal consultation, and substantive responses to every substantive comment.