The most common drug crime charged in San Francisco is the simple possession of a controlled substance. The elements of Simple Possession of Controlled Substance that must be proven at trial include:

  • The defendant unlawfully possessed a controlled substance;
  • The defendant knew of the presence of the substance;
  • The defendant knew of the substance’s nature or character as a controlled substance;
  • The substance was either a “controlled substance” under California law or an analog of a controlled substance;and
  • The controlled substance was in a usable amount.

Possession can involve either “actual” or “constructive” possession. In some cases, the prosecutor may attempt to prove that the drugs were possessed jointly.