Possession of a Controlled Substance in California

Health and Safety Code 11350 HS Explained

In California, it is illegal to possess a controlled substance without a valid prescription. Possession of drugs such as heroin, cocaine, or prescription medications without authorization is prosecuted under California Health and Safety Code 11350 HS.

Since the passage of Proposition 47, simple possession for personal use is typically charged as a misdemeanor, punishable by up to one year in county jail and a fine of up to $1,000.

However, even misdemeanor convictions can carry serious collateral consequences, including:

  • Loss of professional licenses

  • Immigration consequences

  • Difficulty finding employment or housing

In certain circumstances, possession charges may still be filed as felonies, exposing defendants to significantly harsher penalties. The Hedding Law Firm is here to help. Schedule your consultation at (866) 986-2092 or contact us here.

What Is a “Controlled Substance” Under California Law?

A controlled substance is a drug regulated by the government because of its potential for abuse, addiction, or harm. California classifies controlled substances into five schedules, based on medical use and abuse potential.

Controlled Substance Schedules in California

  • Schedule I – No accepted medical use (e.g., heroin, cocaine, mescaline)

  • Schedule II – High abuse potential (e.g., opium, morphine)

  • Schedule III – Moderate abuse potential (e.g., anabolic steroids)

  • Schedule IV – Prescription medications (e.g., diazepam, zolpidem)

  • Schedule V – Lower abuse potential prescription drugs

Some drugs, such as methamphetamine, are prosecuted under related statutes, including Health and Safety Code 11377(a), but are treated similarly for sentencing purposes.

What Is “Drug Possession” Under California Law?

To secure a conviction under HS 11350, prosecutors must prove that you were in possession of the controlled substance. California law recognizes three types of possession:

Types of Drug Possession

  • Actual possession – The drug is found on your person (e.g., pocket, bag, hand)

  • Constructive possession – You have control or access to the drug, even if it is not physically on you

  • Joint possession – Two or more people share control over the substance

Constructive and joint possession cases are often highly defensible, especially when multiple people had access to the location where the drugs were found.

What Must the Prosecutor Prove to Convict You?

To convict you of possession of a controlled substance, the district attorney must prove each element beyond a reasonable doubt, including:

  • The substance was a controlled substance

  • You unlawfully possessed the substance

  • You knew of the substance's presence

  • You knew the substance was a controlled substance

  • You possessed a usable amount, not mere residue

  • You did not have a valid prescription

Failure to prove any one element requires dismissal or acquittal.

What Are the Penalties for Possession of a Controlled Substance?

Misdemeanor Possession (Most Common)

  • Up to 1 year in county jail

  • Up to $1,000 in fines

Felony Possession (Limited Circumstances)

Felony charges may apply when aggravating factors exist, such as:

  • Certain prior convictions

  • Possession connected to another felony

  • Quantity suggesting non-personal use

Felony convictions may result in exposure to state prison and enhanced penalties.

Can Drug Possession Charges Be Dismissed Through Diversion?

Yes. Many defendants charged with non-violent drug possession qualify for drug diversion programs or drug court, which allow treatment instead of jail.

Benefits of Drug Diversion

  • No jail time

  • Charges dismissed upon completion

  • No conviction on your record

What Are Common Defenses to HS 11350 Charges?

Being charged is not the same as being convicted. Common defenses include:

  • Lack of knowledge – You did not know the drugs were present

  • Lack of control – You did not have access or control over the substance

  • Illegal search or seizure – Violations of the Fourth Amendment

  • Valid prescription – Lawful possession of prescribed medication

Each case requires a fact-specific defense strategy.

Speak With a California Drug Possession Defense Lawyer

If you are facing drug possession charges, early legal representation can make the difference between dismissal and conviction. Our criminal defense attorneys regularly defend HS 11350 cases and pursue diversion whenever possible.

Contact The Hedding Law Firm for a free case evaluation at 866-986-2092.