Drug Possession Lawyers in Bay Area (HS 11350)

A single pill in your pocket, a forgotten prescription in your glove box, or someone else’s stash in a shared apartment. That’s how quickly a drug possession charge can upend your career, your reputation, and your peace of mind.

Most people charged under Health & Safety Code 11350 have never been in trouble before. They’re professionals, parents, students, and community members who suddenly find themselves navigating a system they never expected to encounter. The fear is real, but so is this: California law provides powerful pathways to get drug possession charges dismissed entirely, and most people never learn about them until they talk to a defense attorney.

Our team at The Nieves Law Firm Criminal Defense Attorneys has guided hundreds of Bay Area residents through HS 11350 cases. We know which diversion programs Alameda County judges approve, how to challenge the search that led to the arrest, and when the prosecution’s evidence doesn’t hold up under scrutiny. If you’re facing a drug charge in the Bay Area, the most important thing you can do right now is understand your options.

Talk to our team about your case today

What Health & Safety Code 11350 Actually Prohibits

Health & Safety Code 11350 makes it illegal to possess certain narcotic controlled substances without a valid prescription from a licensed physician, dentist, podiatrist, or veterinarian.¹ This is a critical distinction that many people miss: HS 11350 specifically covers narcotics, not all controlled substances.

Substances that fall under this statute include:

• Cocaine and crack cocaine
• Heroin
• Fentanyl and other opiates or opiate derivatives
• Prescription narcotics possessed without a valid prescription (oxycodone, hydrocodone, codeine)
• Psilocybin

Non-narcotic substances like methamphetamine, MDMA (ecstasy), and certain hallucinogens are prosecuted under a separate statute, Health & Safety Code 11377.² Cannabis possession for personal use is governed by Health & Safety Code 11357 and has been largely decriminalized under Proposition 64.³

This distinction matters for your defense. If the substance in question doesn’t qualify as a narcotic under HS 11350, the charge itself may be improper.

How Prosecutors Build an HS 11350 Case

Under CALCRIM No. 2304, the prosecution must prove every one of the following elements beyond a reasonable doubt to secure a conviction for simple drug possession.⁴

You possessed a controlled substance

Possession doesn’t mean the drugs were in your hand or your pocket. California law recognizes three types of possession: actual (on your person), constructive (in a location you control, like your car or home), and joint (shared control with someone else).⁵ The prosecution only needs to prove one of these, which is why people get charged even when the substance was found in a shared space.

You knew the substance was present

This is where many cases fall apart. If someone left drugs in your car without your knowledge, or a roommate stored something in a common area, the prosecution has to prove you actually knew the substance was there. Suspicion isn’t enough.

You knew the substance was a controlled substance

You don’t need to know the exact type of drug, but you must have known it was a controlled substance.⁶ If you genuinely believed you were holding a legal supplement, vitamin, or over-the-counter medication, this element isn’t satisfied.

The substance was a specific controlled substance covered by HS 11350

The prosecution must identify the exact substance through laboratory testing. A field test alone is insufficient for conviction. The lab results must confirm the substance is a narcotic controlled substance covered by the statute.

The substance was in a usable amount

Residue, trace amounts, and debris don’t count. CALCRIM 2304 specifies that a “usable amount” is enough to actually be used as a controlled substance, though it doesn’t need to be enough to produce a narcotic effect.⁷ If the crime lab report shows only trace quantities, this element may be unmet.

Penalties for Drug Possession in California

Since Proposition 47 passed in 2014, simple possession under HS 11350 is classified as a misdemeanor for most defendants.⁸ This was a major shift. Before Prop 47, this offense was a wobbler that prosecutors could charge as a felony.

Felony charges under HS 11350 are now rare. They require the defendant to have a prior conviction for a serious violent felony listed in Penal Code 667(e)(2)(C)(iv), such as certain sex offenses or murder, or to be subject to sex offender registration requirements.⁹

In practice, most HS 11350 cases result in probation, diversion, or treatment rather than jail time. Fines can reach up to $1,000 for a misdemeanor, but penalty assessments can multiply that base amount significantly.

Diversion Programs That Lead to Dismissal

This is the section that matters most for the majority of people reading this page. California offers several diversion pathways that can result in your HS 11350 charge being completely dismissed, leaving no conviction on your record.

Deferred Entry of Judgment (PC 1000)

Penal Code 1000 is the primary diversion program for first-time drug offenders.¹⁰ If you qualify, you plead guilty, but the court defers entry of judgment while you complete a drug education or treatment program. Once you finish the program successfully, the charges are dismissed.

Eligibility generally requires:

• No prior drug diversion participation
• No violent felony history
• The current charge involves simple possession (not sales or trafficking)
• No other non-drug charges in the same case

PC 1000 completion typically takes 12 to 18 months and involves drug education classes, possible counseling, and periodic check-ins.

Proposition 36 (PC 1210)

For defendants who may not qualify for PC 1000, Proposition 36 provides another treatment-over-incarceration pathway.¹¹ This program is available to nonviolent drug possession offenders and emphasizes substance abuse treatment. Successful completion results in dismissal.

Drug Court

Alameda County operates a collaborative drug court program that provides intensive supervision combined with treatment services. Drug court is typically reserved for defendants with more significant substance use issues and involves frequent court appearances, drug testing, and structured treatment. Completion can lead to dismissal.

Why Diversion Should Be the First Conversation

When a client comes to us with an HS 11350 charge, the first question our team asks is whether they qualify for diversion. Not because we can’t fight the case at trial, but because diversion offers something a trial acquittal cannot: guaranteed dismissal with a structured timeline. For working professionals concerned about their careers and reputations, that certainty is invaluable.

The Constructive Possession Doctrine

One of the most frequently litigated issues in drug possession cases is constructive possession, and it’s where many HS 11350 prosecutions are weakest.

The prosecution doesn’t need to prove the drugs were on your person. Under California law, you “possess” a substance if it’s in a place you have the right to control and you intended to control it.¹² This sounds straightforward, but in practice it creates enormous problems for prosecutors.

Consider these common scenarios:

Drugs found in a shared vehicle. You’re a passenger in a friend’s car. Police find cocaine under the seat. Does that mean you possessed it? Not necessarily. The prosecution must prove you knew the drugs were there and that you exercised dominion and control over them. Mere proximity is legally insufficient.

Drugs found in a shared apartment. Your roommate keeps drugs in a common area. You may not have even known they were there. The prosecution cannot simply point to the fact that you lived in the apartment. They need evidence connecting you specifically to the substance, such as your fingerprints on the packaging, the drugs being in your personal space, or statements demonstrating your knowledge.

Drugs found during a traffic stop. You’re driving a borrowed car. Drugs are discovered in the center console. Whose drugs are they? Without additional evidence tying the substance to you (text messages, your DNA, your fingerprints), the prosecution’s constructive possession argument has significant gaps.

Our team regularly challenges constructive possession theories, particularly in multi-occupant situations. The question we push prosecutors to answer is simple: what evidence do you have that our client, specifically, knew about and controlled this substance? When they can’t answer that convincingly, the case weakens considerably.

Defense Strategies for HS 11350 Charges

Challenging the Search (Fourth Amendment / PC 1538.5)

Drug possession cases begin with a search. If that search violated your Fourth Amendment rights, the drugs discovered may be suppressed entirely under Penal Code 1538.5.¹³ Without the physical evidence, the prosecution typically has no case.

Common search issues we evaluate include:

• No probable cause for the traffic stop. Officers need a legitimate reason to pull you over. If the stop was pretextual or lacked reasonable suspicion, everything discovered afterward may be inadmissible.
• Warrantless searches without valid exception. Police generally need a warrant to search your vehicle, home, or person. Exceptions exist (consent, plain view, search incident to arrest, inventory search), but officers frequently overreach.
• Exceeding the scope of consent. If you consented to a search of your trunk and officers searched your glove box instead, they exceeded the scope of your consent.
• Invalid search warrants. Warrants based on stale information, unreliable informants, or insufficient probable cause can be challenged.

Filing a suppression motion under PC 1538.5 is one of the most effective tools in drug possession defense. In our experience, this is the motion that prosecutors least want to face because it forces them to justify every step of the encounter.

Lack of Knowledge

If you genuinely did not know the substance was in your possession, or did not know it was a controlled substance, the prosecution cannot satisfy elements two and three of CALCRIM 2304.¹⁴ This defense arises naturally in situations involving borrowed clothing, shared vehicles, or items left behind by others.

Not a Usable Amount

Crime lab results sometimes reveal only trace quantities or residue. If the amount recovered doesn’t qualify as a “usable amount” under California law, the charge cannot stand. We review every lab report carefully because the difference between a usable amount and residue can determine the outcome of the entire case.

Valid Prescription Defense

HS 11350 itself provides an exception for controlled substances possessed pursuant to a valid prescription from a licensed medical professional.¹⁵ If you had a legitimate prescription for the substance at the time of possession, this is a complete defense to the charge.

Chain of Custody and Lab Challenges

The prosecution must establish an unbroken chain of custody from the moment the substance was seized to the moment it was tested. Any gap in that chain, any question about contamination, or any issue with testing methodology creates reasonable doubt about whether the substance tested is actually the substance found in your possession.

Immigration Consequences of a Drug Conviction

For non-citizens, a drug possession conviction carries consequences that can be more severe than any criminal penalty. A conviction for possession of a controlled substance is generally a deportable offense and a ground of inadmissibility under federal immigration law.¹⁶ This applies even to misdemeanor convictions under HS 11350.

There are critical nuances that every non-citizen defendant must understand:

Diversion may not protect you. While PC 1000 completion results in a dismissal under California state law, federal immigration authorities may still treat the original guilty plea as a “conviction” for immigration purposes. This is one of the most dangerous traps in drug possession cases for non-citizens. An outcome that looks like a win in state court can trigger removal proceedings in immigration court.

A motion to vacate may be available. Under Penal Code 1473.7, individuals who entered a guilty plea without understanding its immigration consequences can petition to have that conviction vacated.¹⁷ This is a high-priority area for our firm, and we work closely with immigration attorneys who refer clients to us specifically for this type of relief.

The stakes require specialized attention. If you are not a U.S. citizen and you’re facing an HS 11350 charge, your defense strategy must account for immigration consequences from the very beginning, not as an afterthought. Our team evaluates immigration exposure as part of every initial case review for non-citizen clients.

Proposition 47 and Resentencing

If you were convicted of felony drug possession under HS 11350 before Proposition 47 took effect in November 2014, you may be eligible to have that conviction reduced to a misdemeanor.¹⁸

Under Penal Code 1170.18, individuals who are currently serving a felony sentence for HS 11350 can petition for resentencing.¹⁹ Those who have already completed their sentence can petition to have the conviction redesignated as a misdemeanor. This retroactive relief has helped thousands of Californians reduce the collateral impact of old drug possession convictions on employment, housing, and professional licensing.

The exceptions are narrow: defendants with prior convictions for certain serious violent felonies (“super strikes”) or those required to register as sex offenders may not qualify.²⁰

Collateral Consequences Beyond the Courtroom

Even a misdemeanor drug possession conviction can ripple through your life in ways the criminal code doesn’t fully capture.

Employment. Many employers conduct background checks, and a drug conviction can disqualify you from positions in healthcare, education, law enforcement, finance, and government. Professional licensing boards in California may deny or revoke licenses based on drug convictions.

Housing. Landlords frequently screen for criminal history, and drug convictions can make it significantly harder to secure rental housing, particularly in the competitive Bay Area market.

Firearms. While a misdemeanor HS 11350 conviction does not automatically prohibit firearm ownership under California law, the circumstances surrounding the conviction (such as a related domestic violence charge or probation conditions) may create restrictions.

Financial aid. Federal student financial aid eligibility can be affected by drug convictions, though recent changes have narrowed this impact.

Professional licensing. If you hold or are pursuing a professional license (nursing, law, real estate, teaching, pharmacy), a drug conviction triggers reporting obligations and potential disciplinary proceedings.

These consequences reinforce why pursuing dismissal through diversion or fighting the charge outright is so important. A conviction, even a misdemeanor, creates lasting obstacles that extend far beyond any sentence the court imposes.

How Our Team Handles HS 11350 Cases in Alameda County

Drug possession cases at the Rene C. Davidson Courthouse in Oakland follow patterns our attorneys know well. We understand which judges are receptive to diversion arguments, how the Alameda County District Attorney’s office typically handles first-time possession cases, and what documentation strengthens a PC 1000 application.

Our approach to every HS 11350 case follows a consistent sequence:

1. Evaluate diversion eligibility immediately. If you qualify for PC 1000, Prop 36, or drug court, we pursue that pathway aggressively because it leads to dismissal.

2. Scrutinize the search. We obtain and review every piece of evidence related to how law enforcement discovered the substance. If there’s a Fourth Amendment issue, we file a suppression motion.

3. Challenge the prosecution’s evidence. We review lab reports, chain of custody documentation, and the specific facts supporting each element of CALCRIM 2304.

4. Account for collateral consequences. For clients with immigration concerns, professional licenses, or career considerations, we build a defense strategy that addresses the full picture.

Quick Reference

Take the Next Step Toward Getting This Behind You

A drug possession charge does not have to follow you for the rest of your life. With the right defense strategy, many HS 11350 cases end in complete dismissal through diversion or successful suppression of evidence. Our team has the resources, the courtroom experience, and the familiarity with Bay Area courts to fight for that outcome.

If you’re facing an HS 11350 charge anywhere in the Bay Area, call The Nieves Law Firm Criminal Defense Attorneys for a consultation. We’ll review the facts of your case, evaluate your diversion eligibility, and give you an honest assessment of where your defense stands.

Schedule your consultation now