Best Home Security
Companies in
St. Louis

Why These Home Security Companies?

Our goal is to connect people with the best local experts. We scored home security companies on more than 25 variables across five categories, and analysed the results to give you a hand-picked list of the best home security companies in St. Louis, MO.

ReviewedCuratedTop Picks855614

Our Selection Criteria:

  • 1. Reputation

    A history of delighted customers and outstanding service.

  • 2. Credibility

    Building customer confidence with licensing, accreditations, and awards.

  • 3. Experience

    Masters of their craft, based on years of practical experience and education.

  • 4. Availability

    Consistently approachable and responsive, so customers never feel ignored.

  • 5. Professionalism

    Providing service with honesty, reliability, and respect.

Arden Technologies

Arden Technologies is a low-voltage electrical installation company in the St. Louis area that specializes in wiring homes and businesses. The company was founded nearly two decades ago and emphasizes its ability to get almost any low-voltage wiring job done. The technicians wire new homes with security systems, access control, fire alarms, central vacuums, and home theaters. Many of the company's customers have expressed satisfaction at the company’s ability to be a one-stop shop for all their electrical wiring needs.

Florissant, MO(314) 393-2903


Assurance Protection

Assurance Protection is a security system company that serves the St. Louis area and has been in business for around three decades. The company specializes mostly in installing custom security systems. Assurance Protection offers alarm system services for homes and businesses, as well as home theaters, fire alarms, intercoms, and many other applications. The company offers free consultation services, and it takes pride in carrying top-rated brands of all products installed. There is a full listing of partner companies on the company's website.

St Peters, MO(314) 236-5910


Burnes Citadel Security

Burnes Citadel Security is a St. Louis security company that offers home and business alarm services that can be controlled from a smartphone. With its Smart Home Technology, it allows clients to remote-control and monitor nearly every part of their alarm system from a smartphone. The service’s features include remotely arming and disarming alarms, controlling lighting and appliances, and locking and unlocking doors. The company allows potential customers to get a live demo of their system on the site to better understand how it works. The company was founded in 1973, and it is UL-listed with an A+ rating with the BBB.

St. Louis, MO(314) 771-7275


Butler Durrell Security

Butler Durrell Security is a family-owned security systems company in St. Louis that serves residential and commercial buildings. The head of the company is also an industry leader in several local associations, including the Missouri Electronic Security Association, the Alarm Association of St. Louis, and the Electronic Security Technology Association. The company offers video security and security systems for both homes and businesses and offers access control and fire detection for businesses. Butler Durrell Security also has regular specials for individual security systems only available on the website.

Wildwood, MO(636) 324-2002


Central District Alarm

Central District Alarm is a family-owned security system company in St. Louis that was founded in 1953. The company is well-regarded, having won a Dealer of the Year industry award for its professionalism. The company offers a variety of services for residents and businesses, including allowing customers to control their security systems remotely. Central District Alarm installs central vacuum systems to purify indoor air, as well as intercoms and fire and life safety. CDA also allows customers to switch to their service from an existing system, at no extra charge or equipment installation.

St. Louis, MO(314) 647-2001


Citywide Alarms

Citywide Alarms is a home security company in St. Louis that specializes in high-tech security solutions for business, residential, and commercial buildings. The company has been in business since 2012, and it earned the Angie’s List Super Service Award for 2015. The company has an A+ rating with the BBB and a five-star rating on Yelp. The company’s specialty is to help clients take their home security into the future, and it offers devices and installation for automated doorbells, thermostats, and garages. The company website frequently advertises special deals, service packages, and free estimates.

St. Louis, MO(314) 266-6760


Gateway Alarm

Gateway Alarm is a security systems company in St. Louis that has been in business for 30 years. The company is bonded and insured, and it operates an in-house monitoring system to pass savings on to the customer. The company offers a whole suite of security monitoring systems, including video surveillance, access control, intercom, and fire alarms. The company occasionally has specials on equipment, and it provides free estimates.

St. Louis, MO(314) 487-2224


Guardian Security Solutions

Guardian Security Solutions is a locally owned, independent security systems company in St. Louis that has been in business for five years. The company services commercial, residential, and medical alert systems and allows customers to create custom text alerts for certain actions taken. The technology Guardian Security Solutions installs also allows customers to create customized energy schedules for their homes. The company offers many security packages to fulfill every potential client’s need, from basic plans to full service with automation. Because it is independently owned, the company prides itself on its ability to offer the best products to its customers without any limits.

St. Louis, MO(314) 675-0405


KnightWatch Security Systems

KnightWatch Security Systems is a security systems company in St. Louis. The company offers a full complement of services for commercial buildings including burglary, fire alarms, CCTV systems, access control, and satellite transmission. It also handles programming for computer networks, phone systems, point of sale, and employee time systems. The company also offers site surveys and security consultations, and is licensed, bonded, and insured for installation of all the systems it offers. The company’s staff has around 30 years of experience and an extensive portfolio of clients, including Mobil, Dollar General, Sports Authority, and AMC Theatres.

St. Louis, MO(636) 861-0001


Life Media

Life Media is a custom media design and installation company in Kirkwood that also installs security systems. The company installs whole-house audio and video systems, home theaters, home automation, security and surveillance systems, and home and office networks. Life Media serves clients throughout the Midwest, and it has been in business for over 20 years. The company can also allow customers to control many of the systems in their home from a single app and the push of a button with smart home systems.

Kirkwood, MO(314) 966-3775


PAC Armor Security

PAC Armor Security is a St. Louis security systems company that has been in business for nearly three decades. The company serves commercial, residential, and industrial buildings with a full complement of services. The company serves customers in St. Louis and within 200 miles of the city. PAC Armor Security has an A+ ranking on BBB, and it offers a full complement of services to its customers, including panic buttons and carbon monoxide, motion, and glass break detection. If a customer already has an alarm system with another company, PAC Armor Security will take over monitoring that system.

St. Louis, MO(314) 772-0070



PrepSecurity is a national security system company with franchises in the St. Louis and St. Charles areas. The company offers interactive security systems for homes and businesses that can be controlled from one user interface, and it also offers central monitoring from a station. PrepSecurity carries security DVRs, IP systems, cameras, and complete alarm systems with integrated video monitoring. The company offers video surveillance, childcare cameras, and commercial alarm systems for commercial clients, as well as private security cameras and alarms, for homes.

St Charles, MO(636) 493-0514



Pro-Guard is a family-owned and operated security systems company in Ellisville that was founded in 1978. The company offers custom-designed services for residential, commercial, and industrial buildings, including security systems, environmental monitoring, home theaters, phone lines, and sound systems. Pro-Guard relies almost solely on word of mouth for advertising and references.

Ellisville, MO(636) 227-0152


St. Louis CCTV and Alarms

St. Louis CCTV and Alarms is a security systems company that serves several dozen cities around the St. Louis area. The company offers security camera systems, access control, and burglar alarms for homes and businesses. The company is committed to using the best equipment and top-of-the-line security cameras, and the positive reviews that customers have given reflect that commitment. Customers especially like the fact that St. Louis CCTV and Alarms allows them to see their security camera video feed directly from a smartphone app.

St. Louis, MO(636) 465-9805


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