Construction Site Security Guards in Baltimore and Maryland

A single night of theft or vandalism can cost a project far more than the equipment taken: replacement costs, insurance claims, delays and penalties. Construction sites are open, spread out, full of valuable tools, copper, materials and machinery, and often empty at night and on weekends. On Site Police provides armed and unarmed security officers to contractors, developers and property owners across Baltimore and Maryland.

What a client said

Monumental Paving & Excavating left us a Google review after Vincent arranged last-minute overnight security for their construction site.

Threats we protect against

• Theft of tools, equipment, fuel, copper wire and building materials

• Equipment tampering and vandalism

• Trespassers, scrappers and squatters on unfinished buildings

• People entering the site after hours

• Fire risks during hot work or system outages. We provide fire watch.

Construction security services

• Overnight and weekend guards: coverage when your crews go home

• Gate and access control: checking in workers, subcontractors, deliveries and visitors

• Foot patrols and mobile patrol: perimeter, fencing, laydown yards and equipment storage

• Short-term and project-length coverage: a single weekend, a high-risk phase or the whole build

• Fire watch: for hot work and system impairments

Armed or unarmed?

Many sites are well protected by alert unarmed officers. In high-theft areas, sites with prior incidents or projects storing very high-value equipment, armed officers provide a stronger deterrent. We'll recommend the right level for your site and budget.

Built around your project

Every site changes as the project moves from site work to framing to finishes, and your security can change with it. We'll talk through the site with you and adjust coverage as the project evolves.

What to expect when you call

When you call 410-591-9479, we'll ask about the site address, the gate and fence layout, what's stored on site, when crews arrive and leave, and anything that has happened so far. From there we recommend the number of officers, the hours, and whether the post should be armed or unarmed. When the risky phase passes, coverage can be scaled down so you're not paying for more security than you need.

Why contractors choose On Site Police

• Police-founded, with 25+ years of law enforcement and security experience

• Licensed, insured and bonded, MD License 106-5544

• Team trained in de-escalation, first aid and CPR

• Staffed 24 hours a day

• 5.0-star Google rating

Protect the schedule, not just the equipment

Stolen tools and damaged machinery mean lost days while crews wait on replacements, re-order materials or file claims. A visible security officer at the gate and on patrol overnight is often a cost-effective way to keep a project on schedule.

Frequently asked questions

• How much does construction site security cost? It depends on the hours, the number of officers, armed vs. unarmed and the project length. Request a quote.

• Can you start on short notice? Call 410-591-9479. We're staffed 24 hours a day and have arranged last-minute overnight coverage for a construction client.

• Do you provide fire watch? Yes. See Fire Watch.

Protect your job site Get a Free Quote or Call 410-591-9479