California Endangered Species Act: Prohibitions, Penalties & Permits

The California Endangered Species Act (CESA) makes it a crime to import, export, take, possess, purchase, or sell any species the state has listed as endangered or threatened, including any part or product of one. Violating that core prohibition can cost you between $25,000 and $50,000 per offense and up to a year in county jail.¹ The law applies to private landowners, developers, and public agencies alike, and it reaches activity that federal law doesn’t always touch.

What CESA Prohibits

Section 2080 of the Fish and Game Code is the heart of the statute. It bars any person or public agency from importing, exporting, taking, possessing, purchasing, or selling a listed species or any part or product of one.² You don’t need to kill an animal to violate it. Simple possession of a listed species, or selling something made from one, is enough.

“Take” has a specific statutory meaning. Under Fish and Game Code Section 86, it means to hunt, pursue, catch, capture, or kill a species, or to attempt any of those acts.³ That definition is narrower than the federal one. Federal law also covers “harass” and “harm,” and federal “harm” has been read to include habitat modification that injures wildlife by disrupting breeding or feeding. California has no equivalent language.⁴

The practical result: habitat degradation on its own is harder to prosecute under CESA than under federal law unless the destruction directly kills or captures animals. CDFW often addresses that gap through the conditions it attaches to incidental take permits rather than through direct enforcement of Section 2080.

One point that catches people off guard: a species doesn’t have to be fully listed to be protected. The moment the California Fish and Game Commission accepts a listing petition, the species becomes a “candidate species” and receives the same legal protections as a fully listed species while the review runs.⁴ CDFW then has 12 months, extendable by six, to produce a peer-reviewed status report before the Commission votes on listing.⁵ Candidacy protection is one of the biggest differences between CESA and federal law, where candidate species get no legal protection at all.

Penalties for Violations

CESA violations are criminal offenses, and the penalty depends on which provision you violate.

Violations of Section 2080 — the core ban on taking, possessing, importing, exporting, purchasing, or selling a listed species — trigger the enhanced penalty under Section 12008.1. A conviction carries a fine of no less than $25,000 and no more than $50,000, up to one year in county jail, or both.¹ The same enhanced penalty applies to violations involving fully protected species under Section 2085. The $25,000 mandatory minimum is meant to keep noncompliance from being treated as a cost of doing business.

Other CESA violations, such as failing to comply with permit conditions or procedural requirements elsewhere in Chapter 1.5, fall under Section 12008’s base penalty: a fine of up to $5,000, up to one year in county jail, or both.⁶

Each individual act of take or possession can count as a separate violation, so fines stack quickly when multiple animals or repeated conduct are involved. CDFW’s Law Enforcement Division investigates suspected violations and works with district attorneys and the Attorney General’s office to prosecute them. Projects operating without a required incidental take permit are a frequent target. Courts may also order habitat restoration or other remedial measures on top of the fines.

Incidental Take Permits

If your project will result in the take of a listed species as an unintended side effect of otherwise lawful activity, you need an incidental take permit from CDFW. Construction, utility, transportation, and other infrastructure projects are the most common applicants.⁷ Proceeding without one when one is required exposes you to the enhanced penalties under Section 12008.1.

CDFW can issue a permit only when all four statutory conditions in Section 2081 are met:⁸

The take is incidental to an otherwise lawful activity, not its purpose.
Impacts are minimized and fully mitigated, with measures roughly proportional to the harm and capable of successful implementation.
Funding is adequate to carry out all mitigation and monitoring for the life of the permit. If mitigation won’t be complete before project work begins, CDFW typically requires a financial guarantee such as a letter of credit, surety bond, or trust account.⁷
The permit will not jeopardize the continued existence of the species, judged against known population trends, existing threats, and foreseeable related impacts.

Start by contacting the CDFW regional office covering your project location. A CDFW environmental scientist walks applicants through the required contents: a description of the proposed activity, the species and habitat likely affected, proposed minimization and mitigation measures, a monitoring plan, and the funding description. CDFW must complete an initial completeness review within 30 days of receiving an application.⁹ Total processing time beyond that depends on project complexity and the species at issue.

Consistency Determinations

If your project already has federal incidental take authorization, either through a biological opinion with an incidental take statement under Section 7 of the federal ESA or through a federal incidental take permit under Section 10, you may be able to skip the full state permit process. Fish and Game Code Section 2080.1 lets you submit the federal authorization to the CDFW director, who has 30 days to decide whether it is consistent with CESA.¹⁰

A finding of consistency covers the project under CESA without a separate state permit. A finding of inconsistency sends you back to the standard Section 2081 process. The determination is published in the California Regulatory Notice Register. The pathway works only when the federal measures already address what CESA would require.

Safe Harbor Agreements for Landowners

Landowners sometimes avoid improving habitat on their property because doing so might attract listed species and bring new restrictions. California’s Safe Harbor Agreement Program, codified starting at Fish and Game Code Section 2089.2, is designed to remove that disincentive.¹¹

Under a safe harbor agreement, the landowner voluntarily commits to management actions that benefit a listed species. In exchange, CDFW establishes “baseline conditions” documenting the existing population and habitat quality on the property. If the landowner later chooses to exit the agreement, they can return the property to those baseline conditions without facing enforcement for take occurring during the return. The agreement cannot drop species populations below the baseline levels.

CDFW can approve an agreement only when it is reasonably expected to provide a net conservation benefit to the covered species, the authorized take won’t jeopardize the species’ continued existence, the landowner agrees to avoid and minimize incidental take to the greatest extent practicable, and a scientifically grounded monitoring program is in place.¹¹ Programmatic agreements covering multiple landowners are available for larger landscape-level efforts.

Fully Protected Species Are a Separate Category

California also maintains lists of “fully protected” species that predate CESA and carry stricter rules. Fully protected mammals include the Morro Bay kangaroo rat, bighorn sheep (except Nelson bighorn sheep), northern elephant seal, Guadalupe fur seal, southern sea otter, and wolverine, among others.¹² Similar lists exist in other code sections for fully protected birds, reptiles and amphibians, and fish.

Fully protected species generally cannot be taken or possessed at all, and no provision of the Fish and Game Code authorizes a standard incidental take permit for them.¹² Limited exceptions exist for Natural Community Conservation Plans and a few other narrow situations identified in specific code sections. If your project area includes a fully protected species, expect a more restrictive and time-consuming path than a routine CESA permit.

How CESA Differs From the Federal ESA

Many projects face both laws at once. Satisfying one does not automatically satisfy the other. The main divergences:

Definition of take. Federal law reaches harassment and habitat harm. California law does not.⁴
Critical habitat. The federal ESA requires designation of critical habitat and consultation to avoid destroying it. CESA had a similar provision, but it was repealed effective January 1, 1999.⁴
Candidate species. Under CESA they get full legal protection the moment a petition is accepted. Under federal law they get none.⁴
Species covered. CESA covers native birds, mammals, fish, amphibians, reptiles, and plants. The federal ESA reaches any species of fish, wildlife, or plant, including invertebrates and some non-native species.
Permitting. Both laws offer incidental take permits, but the processes differ. The consistency determination described above can bridge them for the state side.

How a Species Gets Listed

Listing starts with a petition to the California Fish and Game Commission, not CDFW. The petition must include scientific information on population trends, range and distribution, habitat needs, and the degree and immediacy of threats.⁵ Commission staff screen for completeness, then forward the petition to CDFW for scientific evaluation. If the Commission accepts the petition, candidacy protection kicks in immediately.¹³

At the end of the review, the Commission may list the species as endangered or threatened if its continued existence is seriously jeopardized by habitat destruction, overexploitation, predation, competition, disease, or other natural occurrences. An “endangered” species is one in serious danger of extinction throughout all or a significant portion of its range; a “threatened” species is one likely to become endangered in the foreseeable future without intervention.¹⁴ The Commission can downlist or delist as conditions change.

For anyone planning work on land where a listed or candidate species might occur, the compliance sequence is practical: identify the species present, decide whether your activity will cause take as the statute defines it, and if it will, choose the right authorization — a Section 2081 incidental take permit, a Section 2080.1 consistency determination, or a safe harbor agreement — before work begins.

1
California Legislative Information. California Code, Fish and Game Code FGC 12008.1
2
California Legislative Information. California Code FGC Division 3 Chapter 1.5 Article 3 Section 2080
3
California Legislative Information. California Code FGC Division 0.5 Chapter 1 Section 86
4
California Department of Fish and Wildlife. Compare CESA to the Federal Endangered Species Act
5
California Fish and Game Commission. Petitions to List Species Under the California Endangered Species Act
6
California Legislative Information. California Code FGC Division 9 Chapter 1 Section 12008
7
California Department of Fish and Wildlife. Incidental Take Permits
8
California Legislative Information. California Code, Fish and Game Code FGC 2081
9
Legal Information Institute. California Code of Regulations Title 14 783.5 Incidental Take Permit Process
10
California Legislative Information. California Code, Fish and Game Code FGC 2080.1
11
California Legislative Information. California Fish and Game Code Article 3.7 California State Safe Harbor Agreement Program Act
12
California Legislative Information. California Code, Fish and Game Code FGC 4700
13
California Department of Fish and Wildlife. California Endangered Species Act Listing Process
14
California Legislative Information. California Code FGC Division 3 Chapter 1.5 Article 1 Section 2062