Security Guard & Private Security Companies in Brooklyn, New York

New York regulates security differently from California: individual security guards are registered and trained under the New York State Security Guard Act, while the company employing them must hold a Watch, Guard or Patrol Agency license issued by the New York Department of State, Division of Licensing Services under General Business Law Article 7. Investigative firms hold a separate private investigator license. Because New York City's handgun licensing is strict, armed work requires an NYC carry license plus armed-guard registration and is uncommon, so most contract security is unarmed. Confirm the company's Watch, Guard or Patrol Agency license and that its guards are state-registered before hiring.

The Brooklyn Navy Yard, the Sunset Park industrial districts, and a relentless construction pipeline drive demand for warehouse and site guards, gate and dock access control, overnight yard patrol, and construction-site security — protecting equipment, materials and copper from theft that concentrates after hours across large sites. A provider with real industrial and construction-site experience is the right fit for these properties.

Barclays Center and other venues drive event and crowd-management work, while Downtown Brooklyn's offices and retail and a large residential-development wave add lobby posts, retail loss prevention, and concierge and building security. Many buyers want a provider that can cover both event staffing and steady residential and commercial posts across the borough, with public-facing, de-escalation-trained officers.

Brooklyn bills among the highest in the country as part of the New York City market, though below Manhattan's peak. A standing unarmed guard post over a 12-hour daily shift runs a monthly rate built on prevailing New York City wages before markup; event, corporate and construction work bills higher, while shared mobile patrol costs far less per property. Request two or three quotes from licensed Watch, Guard or Patrol agencies and compare scope.

Our directory lists 249 security guard and private security companies in Brooklyn. Most hold an active license with their state licensing board (such as California BSIS or Illinois IDFPR) and offer on-site security guards, executive protection, corporate security, mobile patrol and alarm monitoring.

Companies are ranked on merit: those with a verified, active state license come first, followed by verified reviews and track record. Reviews count 7 days after they're published. If you only want to see companies with a verified license, check the list of state licensed security companies in Brooklyn.

Security companies in Brooklyn offer on-site security guards, armed security, mobile patrol, event security, executive protection, corporate security, warehouse and industrial security, residential and HOA security, alarm monitoring, video surveillance and security consulting. Each profile details the specific services each provider offers.

Each profile shows the company's license status and, where available, its license number. You can cross-check it on your state licensing board's public lookup — the Bureau of Security and Investigative Services (BSIS) in California or the Department of Financial and Professional Regulation (IDFPR) in Illinois. If a company doesn't appear in the registry, or its license shows as expired, suspended or revoked, don't hire it.

Use our quote form to describe what you need (type of service, area within Brooklyn, shifts, number of guards) and we share your request with licensed companies so interested providers can contact you with a quote. It's 100% free with no obligation.

For standard services like on-site guards or alarm monitoring, coverage can typically start within 48-72 hours of accepting a quote. For specialized services (executive protection, large events), expect 5-10 business days for personnel selection, screening and site onboarding.

If an incident occurs involving personnel from an unlicensed company, you can face negligent-hiring liability. Unlicensed operators also frequently lack certified training, guard registration (guard cards) and active liability insurance, and states can fine businesses that knowingly use them. Always verify the state license before signing a contract.