How San Diego Handles Drug Possession Charges: From Arrest to Resolution

Most drug possession cases in San Diego County begin as something else: a traffic stop, a probation check, a disturbance call, or a DUI investigation that turns up a baggie in the console. From there the case follows a path set largely by statute.

This guide walks that path in order. The service pages on this site describe how Marc S. Kohnen defends these cases; this article is a procedural map of the system itself.

How a Drug Possession Case Starts: The Stop and the Search

Because possession is a crime of discovery, the legality of the discovery is the first thing a defense lawyer examines. A traffic stop requires reasonable suspicion, and once its purpose is addressed the officer cannot prolong the detention to look for drugs without a new justification. Searching the car requires probable cause, consent or a recognized exception. People on probation or parole often have a search condition that permits a warrantless search, but officers must know of it beforehand. After Proposition 64, the odor of cannabis alone is no longer automatic probable cause to search a vehicle.

The remedy for an unlawful search is a motion to suppress under Penal Code section 1538.5. If the stop, detention or search violated the Fourth Amendment, the drugs are excluded, and a possession case without the drugs almost always ends in dismissal.

What Prosecutors Must Prove: The Legal Meaning of Possession

The jury instruction for simple possession, CALCRIM 2304, requires proof beyond a reasonable doubt that you possessed a controlled substance, knew it was there, knew what it was, that it was the drug charged, and that the amount was usable. Each element is a place where the case can fail.

Actual possession means physical control. Constructive possession means the right to control the item, alone or with others, even when it sits in a glove box or a shared apartment. Mere presence near drugs is not possession, and in shared-car and shared-house cases prosecutors often cannot tie a specific person to a specific item. Residue in a pipe or traces in an empty baggie are not a usable amount, though they may support a paraphernalia charge.

Misdemeanor or Felony: Health and Safety Code Sections 11350 and 11377 After Proposition 47

Health and Safety Code section 11350 covers most narcotics and Schedule I and II drugs, including heroin, cocaine, fentanyl and prescription medications held without a valid prescription. Section 11377 covers methamphetamine and certain other stimulants and depressants.

Proposition 47 made simple possession a misdemeanor for most people in November 2014, punishable by up to one year in county jail, with probation and treatment terms far more common than custody. The felony option survives only for a defendant with a prior conviction for a serious or violent offense on the super strike list, or who must register under Penal Code section 290; for them the same conduct can be filed as a felony under Penal Code section 1170(h).

The Proposition 36 Treatment-Mandated Felony

Proposition 36, approved in November 2024, added Health and Safety Code section 11395 for possession of specified hard drugs, including fentanyl, heroin, cocaine and methamphetamine, by a person with two or more prior convictions for listed drug offenses. The prosecution may file that third case as a felony. The defendant can plead and elect court-supervised treatment; completion results in dismissal, while failure or refusal exposes the defendant to a felony sentence of up to three years.

Possession for Sale: How Health and Safety Code Sections 11351 and 11378 Are Charged

Proposition 47 did not touch sales offenses. Possession for sale of a section 11350 drug is charged under section 11351, and methamphetamine for sale under section 11378. Both are straight felonies under Penal Code section 1170(h), and no diversion program applies to a sales count.

Intent to sell is rarely proven by a witnessed transaction. Prosecutors rely on circumstantial indicators, each of which has an innocent explanation to test: users buy in bulk, a scale measures purchases as easily as sales, and text messages are read out of context. Reducing a sales charge to simple possession, and back into diversion eligibility, is a common negotiated outcome in San Diego. Every case is different and prior results do not guarantee a similar outcome.

• Quantity beyond what one person would use in a short period
• Individual baggies, bindles or multiple containers of the same drug
• Digital scales, cutting agents or packaging material
• Large amounts of cash, or text messages and pay-owe sheets suggesting transactions
• No paraphernalia for personal use

Marijuana and Paraphernalia: What Is Still a Crime After Proposition 64

Under Proposition 64 an adult 21 or older may possess up to 28.5 grams of cannabis flower and 8 grams of concentrate. Health and Safety Code section 11357 still makes possession by anyone under 21 an infraction, possession above the limit a misdemeanor, and possession on K through 12 school grounds a separate offense. Unlicensed possession for sale under section 11359 is a misdemeanor for most people, and an open container in a vehicle remains a Vehicle Code violation.

Paraphernalia used for a controlled substance is a misdemeanor under section 11364, with an exception for syringes kept for personal use. It is often the count that survives when the usable-quantity element fails, and it is eligible for diversion under Penal Code section 1000.

Who Prosecutes Drug Cases in San Diego County

In San Diego, the prosecutor depends on where the arrest happened and the level of the charge. Misdemeanors arising inside the city limits are prosecuted by the San Diego City Attorney. Misdemeanors elsewhere in the county are prosecuted by the San Diego County District Attorney, which also prosecutes every felony, including all sales cases, wherever they arise.

The case is heard at the branch serving the arrest location: the downtown criminal courthouse for the central region, Vista for North County, El Cajon for East County and Chula Vista for South Bay.

Booking, Release and Bail

For a misdemeanor possession arrest, officers frequently issue a citation with a promise to appear instead of booking the person, as Penal Code section 853.6 allows. Missing the court date on that citation produces a bench warrant.

If the person is booked, men go to San Diego Central Jail or the Vista Detention Facility, and women to Las Colinas in Santee. Most people arrested on a misdemeanor drug charge are released on their own recognizance quickly. A felony sales arrest carries an amount under the county bail schedule, but the court must consider ability to pay. A person in custody must be arraigned within 48 hours of arrest, excluding Sundays and court holidays.

Arraignment and Your Options: Diversion, Drug Court, Plea or Trial

Arraignment is the first court appearance: the charges are read, a plea is entered, and the court addresses release and future dates. A lawyer will normally enter a not guilty plea and reserve every option.

• Pretrial diversion under Penal Code section 1000: for listed possession and paraphernalia offenses when the defendant has no felony conviction and no other drug conviction within five years, no violence was involved and there is no evidence of sales. No guilty plea is required. The program runs 12 to 18 months, and on completion the charge is dismissed and the arrest is deemed not to have occurred.
• Misdemeanor diversion under Penal Code section 1001.95: available for most misdemeanors, including drug possession, for up to 24 months, and the judge may grant it over the prosecutor's objection. Completion results in dismissal and sealing of the arrest.
• San Diego Drug Court and the collaborative courts: a more intensive treatment track, usually requiring a plea with sentencing held open. Veterans Treatment Court and mental health diversion under Penal Code section 1001.36 serve people who qualify.
• A negotiated plea to a reduced charge, or to the original charge with probation and treatment terms in place of custody.
• Trial, or a suppression hearing first, which frequently decides the case without one.

Consequences Beyond the Sentence

The sentence is often the smallest part of a drug conviction. For a non-citizen, almost any controlled substance conviction, other than a single offense involving 30 grams or less of marijuana, is a ground of removal and inadmissibility; diversion under section 1000 without a plea avoids that in a way older deferred-entry-of-judgment pleas did not. Licensed professionals generally must report a conviction to their board.

Some feared consequences do not follow. A simple possession conviction does not trigger a DMV suspension the way a DUI does, because the Vehicle Code sections that once let a court suspend a license for a drug conviction stopped reaching drug offenses on January 1, 2020. Since the 2021 to 2022 aid year, a drug conviction no longer affects federal student aid eligibility.

Cleaning Up the Record

A dismissed diversion case is the cleanest result; the arrest can be denied on most applications. For a conviction, Penal Code sections 1203.4 and 1203.4a allow a petition to withdraw the plea and dismiss the case once probation ends, or a year after conviction if no probation was granted.

A felony possession conviction from before Proposition 47 can be reduced to a misdemeanor by petition under Penal Code section 1170.18. A cannabis conviction for conduct Proposition 64 legalized or reduced can be redesignated, dismissed and sealed under Health and Safety Code section 11361.8.

What to Do Now

If you were cited or arrested for drug possession in San Diego, do not discuss the facts with police and do not consent to any further search. Write down what the officer said about consent. Keep the citation and calendar the court date.

Then talk to a lawyer before arraignment, because diversion eligibility, the strength of a suppression motion and the immigration structure of any deal are decided early. Marc S. Kohnen has defended drug cases in San Diego courts since 2008 and is available 24 hours a day at (619) 398-2500. His office at 425 Tenth Avenue is a few blocks from the downtown courthouse.

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