If you manage a retail store, warehouse, apartment complex, or commercial property in Southern California, this is one of the most practical security questions you will face: is it better to install cameras, hire a guard, or do both?
The honest answer depends on what you are trying to accomplish. More specifically, it depends on understanding the difference between recording crime and actually stopping it before it happens.
Both tools have a real role in a complete security plan. That said, the data tells a clear story about which one does more of the heavy lifting when it comes to deterrence — the single most important outcome for any property owner trying to protect people and assets.
Why This Question Matters More in California Right Now
California’s retail theft environment has changed significantly over the last several years. According to the Public Policy Institute of California (PPIC), shoplifting increased 13.8% in 2024 and is now 47.5% higher than it was in 2019. When you combine shoplifting and commercial burglary, total retail theft in California is 22.8% above pre-pandemic levels.
In response, California voters passed Proposition 36 in November 2024. The measure restored felony charges for certain repeat theft offenses that had been reclassified as misdemeanors under Proposition 47 in 2014.
While the legislation is an important step, stronger consequences after the fact do not replace active deterrence at the property level. Legislative changes respond to crime. A well-deployed security strategy prevents it.
For Los Angeles and Southern California businesses, the combination of high foot traffic, organized retail crime activity, and a commercial real estate landscape that ranges from single-tenant retail to large multi-building campuses means there is no single answer.
However, there is a hierarchy of effectiveness. Understanding it helps you spend your security budget where it will do the most work.
What Security Cameras Actually Do
Surveillance cameras are one of the most widely used security tools available, and for good reason. They are always on, they do not take breaks, and they produce a continuous, time-stamped visual record of everything that happens on your property. That record has real value — for law enforcement investigations, insurance claims, and internal policy enforcement.
The research on deterrence is more nuanced. A 40-year systematic review and meta-analysis published through the Office of Justice Programs found that CCTV surveillance is associated with a “significant and modest” decrease in crime. The strongest and most consistent effects appeared in car parks and residential areas.
The word “modest” matters here. Cameras work, but their effectiveness varies considerably depending on the environment, placement, and whether the footage is actively monitored.
The Displacement Problem
One of the most consistent findings in camera research is the displacement effect. Studies of Chicago’s CCTV program found that while crimes decreased within 250 feet of camera installations, criminals in some cases simply moved their activity one or two blocks away from monitored zones rather than stopping altogether. Put differently, cameras can shift crime rather than eliminate it.
Additionally, research consistently concludes that cameras are least effective in open, high-traffic commercial environments — precisely the settings where most retail and property crime occurs. A University of Southern California study measuring the effect of cameras on crime in Los Angeles found that location and implementation mattered as much as the technology itself, with limited measurable impact in certain high-traffic neighborhoods.
Where Cameras Excel
Despite those limitations, security cameras deliver clear, documented value in several specific contexts:
- Evidence collection — Footage is often the determining factor in prosecutions, insurance claims, and civil liability cases. Law enforcement uses camera footage to build cases against organized retail theft operations across Southern California.
- Employee accountability — Internal theft is a significant contributor to shrinkage. Cameras in inventory areas, loading docks, and point-of-sale zones reduce internal theft by making employee activity visible and documented.
- Coverage at scale — A camera network can monitor multiple areas simultaneously at a fraction of the cost of staffing each location with a guard.
- After-hours documentation — For properties that are unoccupied overnight, cameras provide a record of any activity during the period when no one is physically present.
Cameras are also a psychological deterrent for opportunistic offenders. A 2023 RTI International study found that 60% of convicted burglars said the presence of a visible security camera influenced their decision to target a different property.
That is a meaningful deterrence effect. It is worth noting, however, that it works primarily on opportunistic criminals — not on organized retail crime operations that plan specifically around camera placement.
What Security Guards Actually Do
A camera observes. A security guard intervenes. That distinction is the heart of this comparison, and it matters most when the difference between a crime being recorded and a crime being stopped comes down to seconds.
Researchers at the University of South West England conducted a peer-reviewed randomized controlled trial measuring the effect of uniformed, unarmed security guards on crime at train stations. The study concluded that private security guards are “agents of deterrence.”
Unlike CCTV systems, guards are not passive environmental cues. They actively prevent crime in a manner comparable to uniformed law enforcement. The presence of guards produced a measurable reduction in victim-generated crimes and an increase in crime detections.
That distinction between passive and active deterrence is especially significant in a high-theft environment. Organized retail crime operations conduct advance surveillance of target locations. They assess staffing patterns, identify blind spots in camera coverage, and time their operations accordingly.
A professional security guard conducting randomized patrols on an unpredictable schedule is fundamentally harder to plan around than a fixed camera with a known field of view.
Deterrence Research on Guard Presence
The Loss Prevention Research Council (LPRC) found that visible security measures — including professional guards — reduce theft incidents by up to 30%. A 2020 analysis of Downtown Los Angeles Business Improvement Districts found that vandalism and petty theft dropped by more than 30% after private security patrols were introduced.
The effect in that study was attributed specifically to the patrol presence itself, not to apprehension. Crime was deterred before it happened rather than stopped after it started.
Furthermore, a 2025 analysis of security in the Bay Area found that properties with visible professional security experienced 60% to 80% reductions in opportunistic crimes including theft and vandalism. These are not cases where guards physically stopped crimes in progress — they are cases where the presence of a guard made the property a less attractive target from the start.
What Guards Can Do That Cameras Cannot
Beyond deterrence, there are specific functions that only a human presence can perform:
- Power of arrest — Under California law, all security guards licensed by the Bureau of Security and Investigative Services (BSIS) receive mandatory training in powers to arrest. A guard can legally detain a theft suspect and hold them for law enforcement response. A camera cannot.
- Real-time decision making — Guards can identify pre-theft behavior — loitering, distraction techniques, concealment activity — before a theft occurs and intervene early. Cameras record this behavior after the fact.
- Emergency response — If a medical emergency, fire, or violent incident occurs on your property, a guard can respond immediately. No camera can call 911, perform CPR, direct an evacuation, or physically assist anyone.
- Access control enforcement — Guards verify credentials, manage dock activity, log visitor entries and exits, and enforce procedures for vendors and contractors. This is particularly important for warehouses, logistics operations, and office buildings where delivery procedures create exposure.
- Coverage of blind spots — Even the most comprehensive camera installation has coverage gaps. Guards on patrol cover areas that cameras miss, and unlike cameras, their patrol routes can change dynamically in response to observed risk.
The Cost Comparison
Security camera systems typically involve higher upfront costs — a commercial installation can range from a few thousand dollars for a basic system to significantly more for enterprise-grade multi-camera networks with remote monitoring capabilities. Ongoing costs include maintenance, storage, and monitoring services if active oversight is included.
Professional security guard services in Southern California generally run between $25 and $65 per hour, depending on the type of guard, the assignment requirements, and the hours of coverage. For businesses that need coverage only during peak hours or overnight, guard services can be structured around the highest-risk windows rather than running 24 hours.
At Guardian National Security, every client receives a free on-site assessment before any quote is issued. We match or beat any comparable price from a licensed, insured company.
The cost comparison changes depending on what you need coverage to accomplish. For large properties requiring broad documentation of all activity, a camera network at a lower per-hour equivalent cost makes sense as a baseline layer. For high-risk periods, active deterrence, or environments where a response capability is essential, guard coverage delivers value that cameras cannot replicate regardless of how sophisticated the technology becomes.
California Licensing Requirements — What the Law Requires
In California, any individual working as a security guard must hold a valid individual registration from the Bureau of Security and Investigative Services (BSIS) before their first assignment. This includes mandatory training in powers to arrest, terrorism and WMD awareness, communications, public relations, observe and report, liability and legal responsibilities, patrol, fire watch, and emergency response.
Guards must also complete 32 hours of skills training within their first six months of employment and 8 hours of continuing education annually.
There is no equivalent licensing requirement for operating a security camera. Anyone can install one. Consequently, the quality of guard services varies considerably between companies depending on how seriously each company enforces training standards.
At Guardian National Security, every guard holds a valid BSIS license before their first shift. Each one completes our full training program under retired law enforcement instructors and is supervised by a management team with over 60 years of combined security experience. We hold California PPO License #120268.
When comparing companies, ask for the PPO number directly and verify it on the BSIS website. If a company cannot provide it, that is a significant red flag.
Which Is Better for Your Property Type?
The answer genuinely depends on what you are protecting. Rather than choosing one over the other, most well-secured properties use both — with the right balance determined by the property’s size, occupancy, hours of operation, and primary risk factors.
When Guards Deliver the Greatest Value
- Retail stores and shopping centers with active foot traffic during business hours
- Warehouses and logistics facilities during overnight and weekend hours when staff is minimal
- Construction sites requiring access control and after-hours protection of materials and equipment
- HOAs and gated communities requiring gate management and community rules enforcement
- Events and venues where crowd management and real-time response are the primary needs
- Any property where organized retail crime is a documented risk
When Cameras Deliver the Greatest Value
- Properties requiring continuous documentation across a large number of locations simultaneously
- After-hours coverage of unoccupied facilities where deterrence and evidence collection are the primary goals
- Inventory areas, loading docks, and point-of-sale zones where internal theft accountability matters
- Properties where budget constraints make full guard coverage impractical and cameras provide a baseline layer
The Strongest Approach: Both Together
Multiple research studies have concluded that cameras and guards work best when deployed together. Cameras extend coverage into areas a guard cannot watch simultaneously and provide documentation that supports any incident a guard responds to.
Guards fill the gaps in camera coverage, provide active deterrence that cameras cannot replicate, and respond to incidents before they escalate. Together, the two systems address different dimensions of the same security goal. The combination is consistently more effective than either tool used alone.
As one peer-reviewed study on surveillance camera effectiveness put it: cameras are “not a strategy in and of themselves.” The research is clear that the most effective outcomes come when camera systems are paired with human security presence — not used as a substitute for it.
Get a Free Security Assessment for Your Los Angeles Property
Guardian National Security has been protecting businesses across Los Angeles and Southern California since 1997. Our guards are BSIS-licensed, trained by retired law enforcement officers, and available 24 hours a day.
Every new client receives a free on-site assessment. We visit your property, assess your risks, and build a coverage plan before a single guard is deployed.
Whether you need standing guards, mobile vehicle patrol, fire watch, or a combination of services, our team will put together a plan that fits your operation and your budget. We back every quote with a price match guarantee.
Contact Guardian National Security today to schedule your free assessment and get a quote.
