Security Robots vs. Contract Guards: An Overnight Cost Worksheet

Which option costs less overnight?

Neither option wins on the hourly line alone. A contract guard appears on an invoice as a bill rate, while a leased security robot appears as one fixed quote given after a site assessment. The real overnight cost sits in the lines underneath, and most side by side comparisons count only the first.

For most facilities, a patrol robot can lower the cost of covering open, repeatable routes, but only after monitoring, escalation and reporting are priced in. A robot that patrols without a person verifying its alerts is not a guard, and the comparison has to treat it that way.

What does a contract guard's overnight line contain?

The wage is the smallest visible part. The Bureau of Labor Statistics reported a May 2023 median hourly wage of $17.82 for security guards, with the 10th percentile at $13.70 and the 90th at $27.60. Contractors bill above those wages because a bill rate has to cover overhead and margin as well as labor.

Belfry's pricing guide frames it as total labor cost plus overhead plus desired margin equals bill rate. Its worked example puts unarmed hourly cost at $22 to $25 and a 2026 recommended rate at $32 to $36, which is one firm's example and not a market survey.

Contract terms add their own lines. Some invoice templates bill guard hours with a four hour minimum per guard, so a short overnight visit can cost more than the hours it covers. The BLS also projects little or no change in security guard employment from 2022 to 2032, so guard labor is not fading away on its own.

What does a leased patrol robot add to the ledger?

A patrol robot changes the walking, not the judgment. The lease covers the platform, but someone still has to watch its alerts, a place must exist to charge it, and there must be a route from alert to a responder when something real happens.

Robotomated, a robotics pricing guide, says its robot only charge excludes human alert monitoring and incident response, so those lines must come from elsewhere in the budget. The same guide treats charging and integration infrastructure as part of the total cost of ownership, and those items often sit in facilities or IT budgets rather than the security line.

How do escalations and reports differ in practice?

A guard escalates by walking to the door, the alarm panel or the parked truck. A robot escalates by sending an alert, and a person must verify it before anyone dispatches. The gap between alert and verified response is where overnight cost hides, and someone has to price that gap, often at an hour when the office is closed.

Reporting splits the same way. A guard writes the shift log as part of the job. A robot produces event records automatically, but a manager still has to review them, and those review minutes belong on the worksheet alongside the guard's paperwork time.

What do independent reviews say about savings?

Independent evidence is thinner than vendor material. As of November 2026, IPVM's published review of RoboGuard concluded that the robot was unlikely to be cost effective against human guards for its use case. That is one reviewer's judgment on one product in one setting, but it is a useful counterweight to any savings claim without a method behind it.

The research I could check found no independent, audited 2025 deployment data on total savings. Balanced commentary points the same direction: robots tend to work alongside a reduced guard force rather than replace one. Several savings figures I encountered rest on models, such as two robots letting a site cut to one guard per shift, rather than on measured results.

What goes on a worksheet your team can fill in?

Build one annual sheet with a guard column and a robot column, then run both over the same overnight hours. Enter figures from local quotes and your own staff rates, add each column, and compare only when the coverage hours match. The lines below are the minimum that keeps both sides honest.

• Guard coverage hours: nights per year times hours per night, plus any relief or supervision hours the contract adds.
• Guard bill rate, the premium rate for nights, weekends and holidays, and the minimum hours billed per visit.
• Guard escalation charges: callouts, response time commitments and any charge for an alarm that turns out to be false.
• Guard reporting time: hours your team spends reading and filing the shift log.
• Robot lease quote for the year, fixed after site assessment, with the coverage hours it assumes written beside it.
• Robot monitoring time: minutes per robot per shift for a person to verify alerts, priced at your loaded staff rate.
• Robot response cost: who dispatches, from where, and what each real dispatch costs your team.
• Robot support lines: charging power, network or integration work you carry, and backup coverage while a unit is down.

Where does a leased robot fit, and where does a guard still belong?

Some sites are plain patrol problems: open lots, long corridors and repeatable routes with predictable gates. Others need a person on site for every alert, and a robot should not be asked to carry that role alone. The worksheet shows which kind of site you run before anyone signs.

Service Robot Co. is a full service commercial robot integrator for US businesses. We are OEM neutral, so we select robots across manufacturers, then lease, deploy, integrate, train and service each unit through a nationwide US engineer network. Our security patrol robot leases run on a three year term with one fixed quote after a site assessment, and we can help you map the escalation path the worksheet depends on. One partner, one number, from the first site walk through the service call.