California surveillance and recording laws require the consent of every party to a confidential communication before that communication can be recorded, making California a two-party consent state under Penal Code Section 632. For a private investigator working in Riverside, San Diego, Orange, Los Angeles, or San Bernardino County, that single rule shapes nearly every surveillance decision, from whether a conversation can be recorded to whether the resulting evidence can be used in court.

What California Penal Code 632 actually prohibits

California Penal Code Section 632 makes it a crime to use an electronic amplifying or recording device to eavesdrop on or record a confidential communication without the consent of every party to that communication (California Penal Code Section 632). A violation is a wobbler, meaning prosecutors can charge it as a misdemeanor or a felony. A first offense can bring a fine of up to $2,500 and up to a year in county jail, or state prison time when charged as a felony, and repeat violations after a prior conviction can bring fines up to $10,000. The statute applies to in-person conversations and phone calls alike, and it hinges on whether the parties had an objectively reasonable expectation that the exchange would stay private.

That "confidential communication" standard is where most of the real-world judgment calls happen. A conversation shouted across a crowded parking lot or conducted at a public gathering generally is not confidential, because the parties should reasonably expect it could be overheard. A conversation between two people speaking quietly inside a closed office or a parked car almost always is. As a licensed investigator and former President of the California Association of Licensed Investigators (CALI) from 2005 to 2015, I have watched this distinction determine whether evidence holds up or gets thrown out before a case ever reaches a jury.

What is still legal to record in California

California's two-party consent rule governs audio of confidential communications. It does not generally prohibit video-only surveillance of a person's activities in a public place, where there is no expectation of privacy and no audio being captured. Photographing or video recording someone walking into a store, driving on a public street, or attending a public event is a routine and lawful part of licensed investigative work. The line investigators have to watch is audio: a body-worn camera or a phone left recording near a private conversation can turn a lawful observation into an eavesdropping violation the moment it captures audio of a confidential exchange.

Exceptions that matter for investigative work

Penal Code 632 carries narrow exceptions, including for law enforcement officers acting in their official capacity, and for recordings made to gather evidence of extortion, kidnapping, bribery, or a violent felony. These exceptions are deliberately narrow and are not a general license for a private party or an investigator to record without consent whenever they suspect wrongdoing. California courts have consistently read the statute's confidentiality standard broadly, which is exactly why how surveillance actually builds a defensible record so often comes down to lawful observation and documentation rather than covert audio recording.

Why this matters for admissibility, not just avoiding a charge

An investigator who violates Penal Code 632 does not just risk criminal exposure. Evidence gathered through an illegal recording can be excluded from a civil or family law proceeding, and the violation itself can become a liability issue for the client who hired the investigation. California's Bureau of Security and Investigative Services (BSIS), which licenses private investigators under the Department of Consumer Affairs, expects licensees to operate within state recording law as a condition of maintaining their license. A licensed firm builds its surveillance methodology around what is legally admissible from the outset, rather than gathering evidence first and hoping it survives a motion to exclude later.

Where clients get this wrong before they call a professional

We regularly see prospective clients, or their well-meaning family members, attempt to record a spouse, business partner, or employee themselves before ever engaging a licensed investigator. Beyond the legal exposure under Penal Code 632, the risk of skipping licensed investigators altogether shows up in evidence that cannot be used, relationships that are damaged before a case is built, and, in some cases, the amateur investigator becoming the subject of a criminal complaint rather than the person they set out to investigate.

Frequently asked questions

Is it legal to record a phone call in California? Only with the consent of every party on the call. California's two-party consent rule under Penal Code 632 applies to phone conversations the same way it applies to in-person conversations, and recording a California resident's call without their knowledge is generally illegal regardless of where the other party is located.

Can a private investigator record video without audio in California? Generally yes, when the subject is in a public place with no reasonable expectation of privacy. Video-only surveillance of someone's movements and activities in public is a standard, lawful investigative technique that does not trigger Penal Code 632, which specifically targets audio recording of confidential communications.

What happens if illegally recorded evidence is submitted in court? A judge can exclude evidence obtained in violation of Penal Code 632, and the person who made the recording can face separate criminal charges. This is one of the most common reasons illegally gathered evidence never makes it into a family law or civil case.

Does California's consent rule apply to security cameras? Fixed security cameras that record video in areas with no reasonable expectation of privacy, such as a business entrance, generally operate differently from covert audio recording of a private conversation, but audio capture on any camera system still has to meet the same two-party consent standard.

Why does NBI emphasize California law specifically? National Business Investigations was founded in Fullerton, California, in 1967 and is headquartered in Murrieta, California, serving Riverside, San Diego, Orange, Los Angeles, and San Bernardino Counties. California recording law is more restrictive than many other states, and out-of-state guidance on surveillance recording does not reliably apply here.

Work with a licensed California investigator

Surveillance conducted the wrong way can undo an otherwise strong case before it starts. National Business Investigations builds every investigation around what California law actually permits and what will hold up as admissible evidence. Contact National Business Investigations to discuss your case with a licensed Southern California investigator.

About the author

Michael D. Julian has more than 30 years of experience in private investigations and served as President of the California Association of Licensed Investigators (CALI) from 2005 to 2015. Connect with Michael on LinkedIn.