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Best Home Security Companies in San Marcos, CA

Our Recommended Top 5

We did the research for you!

  • Licensing
  • User Reviews
  • Mystery Shopping Calls

Our goal is to connect people with the best local professionals. We scored San Marcos Home Security Companies on more than 25 variables across five categories, and analyzed the results to give you a hand-picked list of the best.



5Top Picks

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featured provider = Featured Provider

7940 Silverton Ave., Suite 111, San Diego, CA 92126 Rating

Review Sources

5.0 (1)

Why choose this provider?

CLS Security Electronics is a locally owned and operated company that has been serving the residents of San Marcos and the surrounding areas since 1993. It provides a variety of home security solutions, including custom-designed burglar alarms, fire alarms, and video surveillance systems. It carries products from manufacturers such as Silent Knight, Niles, Samsung, and Sharp. The company's local UL-listed central station provides 24-hour monitoring services. CLS Security Electronics has appeared in the San Diego Source and the San Diego Union-Tribune.

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111 South Marshall, El Cajon, CA 92020 Rating

Review Sources

5.0 (23)
3.7 (15)

Why choose this provider?

Watchlight is an alarm company that strives to meet the safety needs of families and individuals in San Marcos. It renders services such as installation, monitoring, maintenance, and technical support for systems fire alarm, access, and camera systems. Its professionals install technology solutions for protection in panic, intrusion, holdup, and duress situations. Watchlight has been in business since 1972 and is a U.L. Listed Central Station. It has served the Otay Water District and Helix Water District.

  • Pro Installation

2151 N. Mammoth Place, Escondido, CA 92029 Rating

Review Sources

4.5 (92)
5.0 (7)

Why choose this provider?

SoCal Home Theater is a family-run business that provides security solutions for home and business property owners in San Marcos and the surrounding areas. It installs security cameras with IP functionality, allowing clients to watch over their houses or businesses from anywhere. Its system safeguards the property and deters thieves. The company carries day or night cameras from various brands, such as Speco Technologies, DSC, and Honeywell. Additional services include TV installation and removal, home theater hook-up, network installation, and remodeling.

  • Smart Home Installation

4901 Morena Blvd Suite #811, San Diego, CA 92117 Rating

Review Sources

5.0 (1)

Why choose this provider?

Halcyon Alarm & Monitoring delivers custom installation projects for the security goals of homeowners in San Marcos. The company designs home security technologies based on clients' needs and environments. Its technicians install wireless cameras, integrate devices into home automation systems, and troubleshoot and repair system problems. It deploys green energy products such as solar-powered and maintenance-free CCTV trailers and LED lighting. Halcyon has over 20 years of industry experience and is a certified partner of QOLSYS and

  • Free Consultation

San Diego, CA 92101 Rating

Review Sources

4.8 (10)

Why choose this provider?

Since 2006, California Alarm has been providing home security systems to residential and commercial clients in San Marcos and the surrounding areas. Its technicians install new alarm systems without the need for paint or drywall repairs. They also upgrade systems by installing additional features like touchscreen panels and Android and Apple apps that allow users to control their alarms from different locations. For current customers who need repair, they perform the work over the phone through an over-the-air software.

  • Smart Home Installation

Compare our Top Home Security Companies

NameExpertise RatingAddressPromotionsLearn more
CLS Security Electronics
7940 Silverton Ave., Suite 111, San Diego, CA 92126
111 South Marshall, El Cajon, CA 92020
SoCal Home Theater
2151 N. Mammoth Place, Escondido, CA 92029
Halcyon Alarm & Monitoring
4901 Morena Blvd Suite #811, San Diego, CA 92117
California Alarm


  • Introduction

    The phrase "home security system" is a blanket term for all of the hardware and supporting software that creates a network with the purpose of protecting a person's home, possessions, and family. A home security system can include an alarm, a series of cameras, security lights, and anything else used to protect private property.

    To find the best security system for your home, you'll need to consider your preferences. Some options lean more toward easy installation and customization, while others offer comprehensive monitoring and around-the-clock support.
  • How much is a home security system?

    The total price of most home security systems includes a one-time charge for equipment and installation plus a monthly monitoring fee. The installation/equipment charge is typically around $200 but depends on the equipment you select. For monitoring, expect to pay an average of $15 to $35 per month.

  • Who invented the home security system?

    Marie Van Brittan Brown invented an early version of the modern home security system in 1966 with the help of her husband, Albert. Simple yet highly advanced for its time, Brown's system made use of peepholes, a closed-circuit camera system, a two-way microphone, and an emergency alarm.

  • How much does a home security system cost?

    The cost of a home security system depends on the size of your home and the number of features you choose. Installation costs an average of $200, while monitoring can range anywhere from $10 - $15 per month for a doorbell camera. Every option has its own spectrum of prices. It's best to decide what suits your needs and price it out from there.

  • Are home security systems worth it?

    When deciding if a home security system is worth the investment, it's important to consider everything you're getting for the cost. A safer place to live is the obvious benefit, but you may also be able to lower your homeowner's insurance, protect your valuables, and of course — peace of mind.

  • Are wireless home security systems reliable?

    Wireless security systems are only reliable if they have a wired backup option. Because of the relative inconsistency in the connection of a wireless network, a lapse in latency or even a momentary connection drop can cause problems if there isn't a wired system to fall back on.

  • Do you need a permit for a home security system?

    Many municipalities and local governments require a permit to activate a home security system. The primary reason is that many alarm systems can automatically notify police and fire response, and governments have instituted regulations to prevent false alarms. Check with your county to be sure.