Find the 21 Best Security Companies in Colorado

Browse 21 security companies serving Colorado, including Denver, Aurora and Lakewood, for home and commercial protection. Review guarding, patrol and security system services, read customer feedback and contact local providers for estimates.
Certified M.E.C.P installer with 18 years of industry experience
Expert car electronics installation in Aurora, CO. Certified M.E.C.P technicians specializing in remote starts, security systems, and premium audio/video equipment with lifetime labor warranty.
Remote Start Installation Car Alarm Systems Audio Equipment
We offer 24 years of proven security system expertise.
With 24 years of expertise, we provide security camera systems and 4K upgrades, delivering handson support to protect Colorado Springs businesses.
Home Security Systems Commercial Surveillance Systems 4K Upgrade
Security Surveillance System
20 Years
Emergency
Open 24/7
Not rated yet
Security Surveillance System
20 Years
Emergency
Open 24/7
Not rated yet
We offer 20+ years of local security expertise in Colorado.
Trusted Colorado security provider since 2006. Offering advanced video surveillance, access control, and burglar alarm systems for homes and businesses. Free site surveys and 24/7 support.
Video Surveillance Access Control Burglar Alarms
We specialize in Honeywell alarm systems with expert installation and 24/7 monitoring.
Trusted security solutions in Aurora, CO. American Security Professionals offers Honeywell alarm systems, CCTV installation, and 24/7 monitoring for homes and businesses across Colorado.
Alarm Monitoring CCTV Installation Access Control
Not rated yet
Trident Security Systems
40 Years
Emergency
Not rated yet
35+ years designing fire alarm systems since 1986
Trusted Colorado fire and security systems since 1986. 24/7 monitoring, fire alarms, intrusion detection, and CCTV surveillance for homes and businesses. Locally owned in Longmont.
Fire Alarm Systems Intrusion Detection CCTV Surveillance
Not rated yet
Master Security Center
50+ Years
Emergency
Not rated yet
We offer 80+ years of security expertise tailored to Denver's unique needs
Denver's premier security provider since 1940, offering cameras, doors, safes, and 24/7 locksmith services. Expert solutions for homes and businesses with guaranteed satisfaction.
Security Cameras Commercial Security Doors Fireproof Safes
We manufacture our own security cameras and equipment for quality control.
Discover top-quality security camera systems and surveillance equipment at 123 CCTV. Factory-direct pricing, expert support, and reliable warranties. Shop advanced security solutions today.
Security Camera Systems Surveillance Equipment DVR Recorders
We offer 12 years of specialized security systems expertise
Denver-based Lomas Security offers expert access control systems, commercial door hardware solutions, and electronic security installations. Certified technicians with over 10 years' experience delivering reliable security solutions across Colorado.
Access Control Door Hardware Telephone Entry
We offer 46 years of proven expertise in self-storage technology.
Discover Sentinel Systems' innovative access control hardware and web-based management software for self-storage facilities. Enhance security, streamline operations, and grow your business with scalable solutions backed by 46 years of industry expertise.
Management Software Access Control Hardware Self-Storage Websites
Not rated yet
Proguard Protection Services
25 Years
Emergency
Not rated yet
We offer 24/7 personalized customer support and emergency response.
Proguard Protection Services offers 24/7 security systems, fire alarms, and CCTV monitoring in the Roaring Fork Valley. Family-owned since 2001, we deliver customized protection with certified expertise.
Security Systems Fire Alarm Installation CCTV Monitoring