Sites usually end up with whichever option they were sold first. That is not the same as the option that fits the risk.
The useful way to choose is to stop comparing them on price and start with a much narrower question: when something happens at two in the morning, what do you want to occur in the next ten minutes? The answer points at one of these four fairly quickly.
What each one is actually good at
- Monitored alarm. Cheapest per month, and genuinely effective at detection. It tells someone that a door opened or a sensor triggered. What it cannot do is tell you whether that was an intruder, a possum, or your own operations manager who forgot the code. Response depends entirely on whoever the monitoring centre is instructed to call.
- Static guard. A person on site for the whole period. Deters, observes, controls access, responds immediately, and can handle the situations no camera can - a contractor wanting entry, a dispute at the gate, a fire panel in alarm. The most expensive option per hour, and the only one that provides continuous presence.
- Mobile patrol. A licensed operative attends at intervals through the night, checks the perimeter and access points, and reports. Costs a fraction of a static guard, gives real physical presence, and leaves gaps between visits by design.
- CCTV with remote monitoring. Cameras watched off-site, often with analytics that flag movement in defined zones. Very strong on verification - it turns "an alarm went off" into "there are two people at the northern roller door" - which is what escalates a response from a phone call to an attendance.
The real question is the first ten minutes
Run the scenario honestly for your own site. An alarm activates at 2am.
With monitoring alone, the centre calls the key holder list. If the first name does not answer, they work down. Somebody eventually drives in from home. The realistic elapsed time from activation to a person on site is rarely under thirty minutes and is often much longer, and by then whatever was going to happen has happened.
With patrols, an operative is already mobile and typically closer, and attendance is part of the service rather than a favour. With a static guard, the response time is zero because somebody is already standing there. With remote CCTV, the response may still take time but it starts with confirmation, which changes both the urgency and the police priority.
Nothing here says the fastest response is worth the cost. It says the cost should be weighed against what ten, thirty or ninety minutes of unobserved access to your site would actually mean.
When a static guard earns its cost
- High-value or easily moved stock. Electronics, tools, copper, alcohol, tobacco, pharmaceuticals - anything with a fast resale market.
- Access control is part of the job. Sites with contractors, deliveries or multiple tenants outside business hours need a person to make decisions, not a sensor.
- Construction and fit-out. Open perimeters, valuable plant and a changing site that no fixed system was designed around.
- Events and after-hours trading. Crowd presence, incident management and a licensed point of authority.
- Following an incident. After a break-in, a visible presence while the perimeter is repaired and while whoever attended is still interested in returning.
- Where staff safety is the concern. Late finishes, isolated car parks and lone workers. This is a duty-of-care question rather than a stock-loss one, and it is the reason many offices engage guards at all.
When patrols are the better value
For most warehouses and industrial sites in the western suburbs, patrols plus monitoring is the sensible middle. The site is empty, the risk is opportunistic rather than targeted, and the deterrent value of a marked vehicle attending at unpredictable intervals is high relative to the cost.
Two things make the difference between a patrol service that works and one that is decorative. First, the intervals must be irregular - a patrol that arrives at eleven and two every night is a timetable for anyone watching. Second, insist on reporting: attendance times, what was checked, and anything found. Without a report you are paying for something you cannot verify happened.
Where they work together
The combinations tend to outperform any single measure, and they are usually cheaper than the option people assume they need.
- Monitoring plus patrols. Detection with a real response. The most common sensible baseline for an empty commercial site.
- CCTV plus monitoring. Verification before escalation, which cuts false-alarm callouts substantially.
- Static guard on the highest-risk window only. A guard from close of business until midnight, then patrols overnight, costs a fraction of a full static roster and covers the period when most opportunistic entry occurs.
- Lighting and physical hardening first. Not a service anyone sells you monthly, but bollards, better locks, lighting and clear sightlines reduce risk permanently and cost nothing to run.
Check the licensing before you sign
In Victoria, private security businesses and the individuals working for them are licensed by Victoria Police under the Private Security Act. This is not optional and it is straightforward to verify.
- Ask for the business licence number and the entity it is issued to, and check the name matches the business you are contracting with.
- Ask whether operatives are employed or subcontracted, and confirm individual operatives hold their own licences.
- Ask for the certificate of currency for public liability, and check the expiry date.
- Ask what the reporting looks like before you sign, not after. Request a sample patrol report.
- Ask what happens on escalation - who is called, in what order, and at what point police are contacted.
If you would like this worked through against your own site rather than in the abstract, tell us the address and the hours you are worried about and we will usually call you back within a couple of hours.