Professional Armed Security & Investigative Services in Pennsylvania

Trusted. Experienced. Always Prepared.

Central PA, Greater Philadelphia, Montgomery County, Chester County, Delaware County, Main Line, and King of Prussia

Partner With The Best

At Commonwealth Protective Services, we deliver top-tier armed security and investigative solutions for businesses, law firms, and institutions across Pennsylvania. Whether you’re managing risk at a corporate site, securing an event, or conducting sensitive legal work, our licensed, insured, and highly trained officers are here to protect what matters most.

We serve clients throughout Pennsylvania, with a reputation for rapid response, unmatched professionalism, and service you can count on.

How We Help

Why Choose Commonwealth Protective Services?

Guard Overlook

Armed Security Experts

Our officers are vetted, licensed under Act 235, and rigorously trained to provide reliable protection for commercial properties, high-profile individuals, and public institutions.

Cyber Security

Private Investigations & Legal Support

We support attorneys and clients with discreet, accurate investigations, including background checks, witness interviews, and surveillance.

Phila Water Works

Local. Experience. Committed to Excellence.

As a licensed, insured, we combine local knowledge with elite-level professionalism, raising the bar for private security in PA.

Crowd Control

Customized Security Plans

No two clients are alike. We tailor every engagement to your specific needs, with a clear process and a commitment to transparency and responsiveness.

Our Security & Investigative services

Armed Security Services

Protect your people, property, and reputation with our armed guard services. Ideal for businesses, construction sites, apartment complexes, retail centers, and more. Available throughout Philadelphia, Bucks County, Montgomery County, and Central Pennsylvania.

Executive Protection

Discreet, close protection for high-net-worth individuals, corporate leaders, and public figures. Our executive protection specialists are trained in risk mitigation, situational awareness, and emergency response.

Private Investigations

Licensed investigators delivering actionable intelligence, whether you’re conducting a pre-employment check or gathering evidence for court. We handle everything from background screenings to covert surveillance.

Legal Support for Attorneys

Working with legal teams across PA, we provide essential support for criminal and civil cases, including witness interviews, evidence documentation, and investigative research.

EP Work

How It Works

Request a Consultation

Tell us what you need.

We Build Your Plan

Get a custom proposal with clear next steps.

Stay Protected

Trust us to show up, follow through, and deliver results.

What Our Customers Are Saying

Ready to Secure What Matters Most?

Whether you need ongoing armed security or one-time investigative support, we bring the experience, responsiveness, and professionalism your business deserves.