Construction Site Security Cost Per Night: 2026 Guide
Construction sites are most exposed exactly when no one's there — overnight and on weekends. The cost of theft, copper loss, and vandalism on an unguarded site usually dwarfs the cost of coverage. Here's what construction site security costs per night in 2026, the two main models, and how to protect a site without overspending.
Standing guard vs mobile patrol
There are two main ways to secure a construction site, and they're priced differently. A standing guard is a fixed officer on site for the shift — continuous presence, access control, and immediate response. Mobile patrol means scheduled drive-by or walk-through checks at varied times, with documented rounds, rather than a constant presence.
Standing guards cost more because you're paying for every hour of coverage; patrol costs less because you're paying per check. The right choice depends on the site's value, exposure, and budget.
What a standing guard costs per night
A standing guard is priced per hour, per guard — roughly $40–$120, with most construction coverage using unarmed officers in the $40–$60 range. An overnight shift of 10–12 hours at $50/hour runs about $500–$600 per night for a single officer.
For a large or high-value site that needs more than one officer, multiply accordingly. The four-hour minimum rarely matters here, since overnight shifts are well above it.
What mobile patrol costs
Mobile patrol is usually priced per check or as a nightly package of several visits. Because an officer isn't on site the whole time, it's significantly cheaper than a standing guard — often a fraction of the per-night cost — while still providing a documented, deterrent presence.
Patrol suits sites that are lower-risk or have limited budget but still need a visible, recorded security presence. Many projects use patrol during quieter phases and a standing guard during high-exposure ones.
What drives the cost up or down
Site value and exposure — copper, tools, fuel, and finished materials all attract theft. Location matters; sites in higher-crime areas need more coverage. Hours (overnight and weekend coverage is the core need), number of officers, and whether you need fire watch (for hot work or impaired fire systems) all factor in.
Fire watch is its own line item when required — continuous monitoring with documented patrol rounds — and is often mandated rather than optional.
Getting the most protection for the budget
Match the model to the phase. Use a standing guard when the site is most exposed — valuable materials on site, active high-theft periods — and mobile patrol during lower-risk stretches. The combination protects the site without paying for continuous coverage you don't need every night.
Compare against the real cost of loss: a single copper or equipment theft often exceeds weeks of patrol. Framed that way, security usually pays for itself.
How to protect a site for less without cutting corners
The cost-effective approach is to match coverage to the site's risk phase rather than paying for a standing guard every night by default. During high-exposure periods — valuable materials on site, copper and wiring installed, equipment staged — a standing guard earns its cost. During quieter phases, scheduled mobile patrol provides a documented, deterrent presence for far less.
Two other moves stretch the budget honestly: good lighting and clear signage that a site is patrolled both amplify the deterrent effect of whatever coverage you have, and consolidating valuable materials into a single secured area reduces how much an officer has to watch. None of this replaces licensed coverage — but combined with the right model for each phase, it protects the site without paying for continuous coverage you don't need every single night.
When you are ready to move from planning to booking, Pronto Guards offers construction site security with transparent online pricing — you see the exact total before you pay.
For a full breakdown of mobile patrol and what is included, see our service details.