Home & Business Security Systems in St. Peters, MO
Citywide Alarms is a family-owned home security company serving St. Peters and the surrounding St. Charles County area offering service for home and business alarm systems, security cameras, access control, and smart home automation. Schedule your free estimate today.
Our Closest Office Near St. Peters
Home Security Specialists For All Of St. Charles County
For over a decade, Citywide Alarms has been the leader in security system installation for homes and businesses in St. Peters. Our St. Charles County office is just down Jungerman Rd at 965 Sycamore Dr in St. Charles, MO. When you choose Citywide, our team handles everything from alarm and system installation to ongoing monitoring and support. Ready to protect your home or business? Schedule your free estimate today.
A Local Leader In Home & Business Security
Home Alarms
Wireless alarm systems built to catch intrusions right away and alert our 24/7 monitoring center in seconds.
Learn MoreSecurity Cameras
Check in on your property anytime, from anywhere, with HD indoor and outdoor security cameras streaming straight to your phone.
Learn MoreSmart Home Devices
Your video doorbell, smart locks, garage door, thermostat, and lights, all managed from a single app tied into your security system.
Learn MoreBusiness Alarms
Commercial-grade alarm systems designed to keep your property, staff, and inventory protected around the clock, with monitoring that never clocks out.
Learn MoreAccess Control
Access control lets you manage who comes and goes with keyless entry, whether you're securing one door or an entire commercial building.
Learn MoreCloud Storage
Keep your footage backed up offsite, so it's still there and accessible even if something happens to the camera itself.
Learn MoreFire Alarm Systems
Code-compliant fire detection systems that stay monitored around the clock and alert responders the instant smoke or fire is detected.
Learn MoreMonitored Cameras
Real-time video verification gives our monitoring team eyes on what's actually happening, reducing false alarms and speeding up real ones.
Learn MoreWhy Homeowners & Businesses in St. Peters Choose Citywide Alarms
A security system is only as good as the company standing behind it. Citywide Alarms handles your installation, monitoring, and ongoing support directly, so there's no guessing who to call when something needs attention.
Learn More About UsWe've built that reputation as a family-owned company since 2010, with an A+ BBB rating, 4.8+ stars across 100+ reviews, two Angie's List Super Service Awards, and recognition from KSDK Channel 5 as the #1 provider of video doorbells in St. Louis. Every system runs on Alarm.com and installs fully wireless, and we only service equipment we install ourselves, so you always know exactly who to call.
What St. Charles County Thinks Of Us
Frequently Asked Questions
How much does a home security system cost in St. Peters, MO?
It depends on the size of your home, the equipment you choose, and your monitoring plan. A small apartment setup costs less than a full home with cameras, access control, and smart automation. The most accurate way to get a number is a free consultation, where we walk your property and quote based on what you actually need instead of a generic package.
Do you offer smart home installation in St. Peters?
Yes. We install and integrate video doorbells, smart locks, garage door control, thermostats, and lighting, all controllable from a single app, alongside your alarm and camera system.
Is your team local to St. Charles County?
Yes. We have a physical office at 965 Sycamore Dr in St. Charles, and our technicians live and work in the area. You’re not waiting on a crew driving in from out of state.
Do you provide security systems for homes and businesses?
Yes. We install and monitor systems for both, including alarms, security cameras, access control, smart home automation, and fire alarm systems.
Do you serve other cities in St. Charles County?
Yes. Citywide Alarms serves all of St. Charles County, including Cottleville, O’Fallon, Wentzville, and St. Peters, not just the City of St. Charles itself.
Proudly Providing Security Solutions In St. Peters
Citywide Alarms provides trusted security solutions throughout St. Peters & St. Charles County. Whether you’re a home or a business, we’re ready to help you protect what matters most.
- St. Charles965 Sycamore Dr.
St. Charles, MO 63304
Contact Us For A Quote
If we didn’t answer all of your questions, feel free to contact us at anytime.