The best 10 Security Guard Companies near Denver, Colorado - with verified email and phone number owner contact info

Frontier Security Guard & Patrol offers Denver residents 24/7 emergency response, unarmed guard patrols, and vehicle patrols. Their team, with law‑enforcement and military backgrounds, provides tailored security for residential, commercial, and industrial properties. Clients note reliable, respectful service and a free security assessment, plus positive reviews from local businesses and homeowners.

Twin City Security offers Denver businesses a range of security solutions, including armed and unarmed guards, concierge, construction, corporate, dispensary, fire‑watch, manufacturing, property‑management, residential, trailer‑camera, and warehouse services. Their team is trained, licensed, insured, and provides 24/7 monitoring, rapid response, and customized plans for each client’s unique needs.

JCJ National Security delivers 24‑hour, licensed guard services across 50 states, backed by 24 years of experience. Their portfolio includes government, construction, residential, fire‑watch, office, and training solutions, with rapid deployment and 100 % coverage. Clients praise the firm’s professionalism, responsiveness, and reliable, customized security for businesses nationwide today.

True Security offers 24/7 emergency response, licensed, insured, and bonded security services across the Denver metro area. Their team includes uniformed, unarmed, armed, and plain‑clothes guards, plus vehicle patrols, fire watch, and monitoring support. With over 25 years of experience, they provide tailored coverage for businesses, schools, healthcare, and events.

Front Range Patrol offers commercial, residential, and property protection services across Colorado, emphasizing affordable, high‑quality security solutions. Established in 1991, the company highlights licensed and insured status, a reputation for reliability, and a focus on creating safer environments for clients. Their team is trained to address diverse security needs effectively.

Bellator Defense offers Denver security solutions, including armed and unarmed guards, access control, crowd management, event protection, executive escort, fire watch, overnight patrols, and private security. Services cover apartments, banks, construction sites, corporate offices, hotels, schools, and warehouses. Pricing ranges $36‑$65 per hour, with a free quote process and 24/7 support.

Denver Metro Security offers licensed, insured protection across Colorado, covering schools, churches, patrol, and event security. Their services include mobile surveillance and on‑site event coverage. Established in 1983, the firm emphasizes risk reduction and client satisfaction, serving hospitals, industrial parks, museums, and private residences with a focus on community safety and peace of mind.

Off Duty Officers offers a broad range of security solutions, including armed and unarmed guard services, event and construction site protection, fire‑watch patrols, loss prevention, and workplace violence response. Established in 1993, the company serves over 1,000 clients nationwide, providing 24/7 coverage and customized plans for businesses and private events.

Dominus Protection, LLC, operating as Olympian Strategic Group, is a privately held security firm founded in 2019. The company offers security guard services, private investigations, and training programs. It has earned the Quality Business Award for 2024, 2025, and 2026, reflecting consistent recognition for service quality and client satisfaction.