Catalyst Security Group Inc
Verified Pro
4.9(44)
Alarm System Installation in Denver, CO
Compare 24 alarm system installation contractors near you in Denver and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 22, 2026
Most pros respond within 2–24 hours
Verified Pro Installers
Other Businesses in This Area
Respond Security
5.09 mo onlineSecurity One: Denver, Colorado Home Security Systems
5.020+ years onlineAccent Alarms
4.919+ years onlineSafeStreets Home Security Denver
4.923½+ years onlineScout Security
4.9Secure All Security Doors
4.926+ years onlineSecurity Central Inc. | Denver Home Security Systems | Business Alarm Systems Denver | Home Alarm System Monitoring
4.924½+ years onlineVivint
4.920½+ years onlineColorado Security Company
4.811+ years onlinePye-Barker Fire & Safety, formerly Mountain Alarm
4.7~4 years onlineREM AUDIO INC.
4.67 mo onlineAction Security Iron
4.411½+ years onlineAlarm Detection Systems, Inc. Colorado
4.329½+ years onlineReliable Home Technology
4.1~16 years onlineAlarm System Installation in Nearby CO Cities
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Alarm System Installation in Denver, CO
Denver alarm system installers in this directory cover Highlands, Cherry Creek, Wash Park, Stapleton-adjacent, and surrounding Denver County. A typical 3-bedroom Denver home with door/window contacts, motions, glass-break, and 24/7 monitoring runs $1,800-$3,500 installed plus $35-$60/month for monitoring.
Denver Police charges for false-alarm response after the second event. Most monitored systems use cellular over LTE. Colorado tornado/hailstorm exposure makes battery-backed panels essential.
Frequently Asked Questions
- Do I need a permit for a Denver alarm?
- Denver Police requires alarm registration ($50-$100/year).
- Will my alarm work during a hailstorm?
- Battery-backup panels with cellular monitoring ride through wind/hail-related power outages.
- Should my alarm integrate with cameras?
- Most modern systems do — Alarm.com, Honeywell, and Qolsys all integrate.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Denver and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.