Security Guard vs. Police Officer in California — Know the Difference

Understand the legal authority differences between California security guards and police officers — arrest powers, jurisdiction, force rules, and impersonation consequences.

Both security guards and police officers work to protect people and property — but their legal authority, training requirements, and protections are fundamentally different under California law. Understanding these differences is essential for guards, employers, and the public.

Legal Authority

Security Guards

Authority comes from the **property owner** who hires them

Can only exercise **citizen's arrest** powers under Penal Code 837

Authority is limited to the **property they're assigned to protect**

Must have a valid **BSIS Guard Card** to work legally

Regulated by the Bureau of Security and Investigative Services

Police Officers

Authority comes from **the state of California**

Have full arrest authority under **Penal Code 836**

Have jurisdiction within their **city, county, or state boundaries**

Certified through the **California POST** (Commission on Peace Officer Standards and Training)

Can enforce all state and local laws

Arrest Powers

Situation	Security Guard	Police Officer
Witnessed misdemeanor	Can arrest (PC 837)	Can arrest (PC 836)
Suspected felony	Can arrest with reasonable cause	Can arrest with probable cause
Warrant issued	Cannot serve warrants	Can arrest on warrant
Traffic violation	No authority	Full authority
Domestic dispute	Observe and report only	Full intervention authority

Key difference: A security guard must have personally witnessed a misdemeanor to make an arrest. A police officer can arrest based on probable cause even without witnessing the crime.

Use of Force

Security Guards

Must use the **minimum force necessary**

No qualified immunity — **personally liable** for excessive force

Can be sued civilly and charged criminally

Must follow the force continuum taught in BSIS training

Deadly force only when facing imminent threat of death

Police Officers

Follow department use-of-force policies

Protected by **qualified immunity** in many cases

Subject to internal affairs investigation

Have access to additional force tools (Taser, firearm standard)

Can use force to effect a lawful arrest

Training Requirements

Requirement	Security Guard	Police Officer
Initial training	8 hours (pre-assignment)	664 hours (POST academy)
Total first-year	40 hours	664+ hours
Annual continuing	8 hours	24 hours (minimum)
Firearms training	Optional (separate BSIS permit)	Required (POST certified)
Background check	Live Scan (DOJ/FBI)	Extensive background investigation

Impersonation Is a Crime

Penal Code 538d makes it a misdemeanor to impersonate a peace officer. This includes:

Wearing a uniform that says "Police" or "Law Enforcement"

Using badges, patches, or insignia that imply you are law enforcement

Verbally claiming to be a police officer

Using emergency lights or sirens (Vehicle Code 27605)

Penalties: Up to 1 year in county jail and/or $2,000 fine. A second offense can be charged as a felony.

For security guards: Your uniform should clearly identify you as "SECURITY" — not police. Your employer is responsible for providing compliant uniforms.