TOP RATED LOCAL SECURITY ALARM SYSTEMS
Trusted Home & Business Security in St. Louis — 24/7 Monitoring & Smart Protection
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Toll Free (844) 238-9327
Local (636) 942-5276
At St. Louis Alarm Co, we deliver advanced, reliable security systems tailored to your needs — from single-family homes and apartments to retail stores and warehouses. With 25+ years of IT and security experience, our veteran-owned local team ensures fast installation, transparent pricing, and 24/7 professional monitoring across St. Louis, St. Charles, Lincoln, and Warren Counties.
Fast local response • No high-pressure sales • Installations tailored to your property
✔ Veteran-Owned & Locally Operated
✔ 24/7 Professional Monitoring
✔ Smart Home & Business Integration
Home and Business Security Systems
When it comes to safety and security, there’s no room for compromise. That’s why St. Louis Alarm Co. is dedicated to delivering advanced, reliable home and business security systems designed to provide robust protection and peace of mind. Our expert team crafts and installs security solutions customized to meet your unique needs, ensuring your property stays secure around the clock. Trust St. Louis Alarm Co. to keep you and your property safe 24/7. We’re proud to be ranked among the top commercial and home security companies in St. Louis
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(636) 942-5276
Residential and Commercial Security Alarm Services
Local Expertise. Smart Technology. Real Protection.
We combine decades of IT and low-voltage experience with modern alarm and camera technology
to keep your property protected day and night. Whether you’re a homeowner, renter, or business owner,
we design a system that fits your needs and budget.
- Veteran-Owned & Local
We live and work in the St. Louis area — not a national call center.
You get honest recommendations, fast service, and people who understand local security challenges. - Custom Systems for Your Property
Every home and business is different. We walk your property, identify blind spots,
and build a solution that covers doors, windows, parking lots, warehouses, offices, and more. - 24/7 Monitoring & Smart Alerts
Get round-the-clock monitoring with fast dispatch when it matters most.
Receive instant alerts on your phone for alarms, motion events, and system status. - Smart Home & Business Integration
Control your security system, smart locks, thermostats, garage doors, and cameras from a single app.
Manage access remotely and always know what’s happening on your property.
Home Security Systems for Houses, Condos & Rentals
Protect your family, pets, and valuables with professionally installed home security. From basic intrusion detection to full smart-home automation, we’ll build a system that fits your lifestyle.
Alarms & Sensors
Intrusion Detection
Professionally installed panels, door and window contacts, glass-break sensors, and motion detectors to cover your home’s most vulnerable entry points.
- 24/7 monitored alarm system
- Door, window & glass-break protection
- Pet-friendly motion sensors
Video & Doorbells
Cameras & Video Doorbells
See who’s at your door, watch live video, and review recorded events from anywhere. Ideal for porches, driveways, yards, and interior check-ins.
- High-definition interior & exterior cameras
- Smart video doorbells with two-way audio
- Cloud & local video storage options
Safety & Smart Home
Fire, CO & Smart Home Integration
Add monitored smoke and carbon monoxide detection, plus smart locks, thermostats, and garage control for added convenience and peace of mind.
- Monitored smoke & CO detectors
- Smart locks & garage door control
- Thermostat & lighting automation
For Business & Properties
Commercial Security, Cameras & Access Control
From small offices and retail shops to warehouses and multi-site operations, we design layered security solutions that protect your people, inventory, and property.
Intrusion
Commercial Alarm Systems
UL-listed equipment and professional-grade security tailored to your business,
including partitions for different departments or tenants.
- Door contacts, motions & glass-break sensors
- Back-door, dock & warehouse coverage
- Open/close reporting & user codes
Video Surveillance
HD & AI-Powered Cameras
Monitor entrances, parking lots, loading docks, and interiors with high-resolution cameras and
smart analytics for people, vehicles, and license plates.
- Interior & exterior camera systems
- Parking lot & LPR (license plate) monitoring
- Remote viewing & video search
Access Control
Door Access & Employee Management
Replace keys with smart access control. Control who can enter which doors, and when.
View activity logs and easily add or revoke access.
- Keypad, card, and fob systems
- Schedule-based access rules
- Audit trails & remote management
DIY Smart Alarm System & Cameras For Renters
If you’re renting an apartment or leasing a home, St. Louis Alarm Co. offers flexible, no-contract home security systems designed specifically for renters. Our DIY smart alarm and camera packages include free installation and free activation for qualified customers, making it simple and affordable to secure your space without long-term commitments.
Our no-contract alarm monitoring runs on reliable 4G LTE wireless technology, keeping your home protected even if your internet goes down. When it’s time to move, you can easily take your security system with you and enjoy the same UL-certified 24/7 monitoring in your new location.
With DIY smart alarm systems, you get:
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HD security cameras for live and recorded video
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Smartphone app control for arming, disarming, and alerts
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Portable equipment you can move to your next home
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Professional-grade monitoring with no contracts
Getting Started
How Our Security Process Works
We keep the process simple and transparent — no surprises, no high-pressure sales.
Step 1
Free Security Consultation
We visit your home or business, walk the property, and discuss your goals and budget.
You’ll receive a clear written proposal with line-item details.
Step 2
Professional Installation
Our technicians install, program, and test your system.
We keep wiring clean, labels clear, and ensure your system is easy to use.
Step 3
Training & 24/7 Monitoring
We walk you through the app, keypad, and alerts so you’re confident using your system.
Then our monitoring center watches over your property around the clock.
Providing
IT Services Since
2009
Service Area
Security & Monitoring Across the St Louis Metro Area
St. Louis Alarm Company proudly serves homeowners, renters, and businesses across the greater St. Louis region. If you’re within driving distance, there’s a good chance we can help.
Primary service areas include:
- St. Louis County, MO
- St. Charles County, MO
- Lincoln County, MO
- Warren County, MO
Surrounding communities in the St. Louis metro
Local Installers
Fast On-Site Service
Remote Support Available
Download the App
Stay in Total Control all the Time
You can control everything in your house with our application. Use your phone to monitor your home from any part of the globe all powered by Alarm.com
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