Since 2004.
Looking for a home security company you can actually count on in Marietta? J&J Security Systems has spent over 20 years designing and installing smart security systems for homes across Marietta, near Kennesaw Mountain, not one-size-fits-all packages.From burglar and intrusion alarms to indoor and outdoor security cameras, smart home automation, and 24/7 professional monitoring, our local technicians design a system around how you actually live, then install, configure, and service it themselves.We’re an A+-rated, BBB-accredited company based nearby in Snellville, GA, so a local technician, not a call center, answers when you call. Every installation comes with transparent, upfront pricing and a lifetime limited warranty.Ready to protect your home? Request a free quote or call (770) 771-5502 to talk to a Marietta security specialist today.
Every Marietta system starts with a monitored security alarm system. From there, most homeowners add professionally installed security cameras and smart home automation so locks, lights and cameras work from one app. Own a business in Marietta? See our commercial security systems, or browse all the Georgia communities we serve.
Marietta sits in Cobb County, about 45 minutes northwest of Snellville via I-285 and I-75. Here is what we see most often in Marietta homes and how we approach it.
Marietta stretches from the historic homes around Marietta Square and Whitlock Avenue to the large-lot neighborhoods of East Cobb along Roswell Road and Johnson Ferry, and out to Powder Springs Road and the neighborhoods near Kennestone Hospital. Each of those areas asks for something different: intown homes need discreet sensors on original doors and windows, East Cobb properties need outdoor camera coverage across long driveways and rear yards, and townhome communities near the Big Chicken want compact systems that still catch a package thief.
We install monitored alarms, indoor and outdoor cameras, video doorbells and smart locks throughout Marietta, and because much of Cobb County has strong cellular coverage, the IQ4 panel’s built-in LTE keeps monitoring live even when Wi-Fi drops. Homeowners with pools, detached garages or workshops can add gate sensors, outdoor motion detectors and water and freeze sensors on the same system.
The City of Marietta and Cobb County both use false-alarm ordinances, so we register your system properly where required and set entry delays and pet-immune motion sensors to keep dispatches to real events.
A proven process that takes you from first call to full protection in Marietta, GA.
We walk your Marietta property, listen to your concerns, and map out the entry points and blind spots that matter most.
We design a system around your home, not a generic package, choosing the right mix of alarms, cameras, and automation for your budget.
Our local technicians handle mounting, wiring, and testing in a single visit, then walk you through everything before we leave.
Once installed, your system is backed by around-the-clock monitoring and a local team that answers when you call.
Protecting homes across Georgia since 2004, we bring over 20 years of hands-on experience designing, installing, and maintaining customized residential security systems.
Your home is different, and your security system should be too. We recommend alarms, cameras, and automation based on your layout, risks, and budget, not a generic package.
Correct sensor placement, camera angles, system configuration, and testing help ensure your security system performs the way it should from day one.
We focus on solving your home's security needs, not selling you equipment you don't need.
J&J is locally based in Snellville and installs and services home security systems throughout Marietta and Georgia.
EXCELLENT
Based on 641 reviews
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Ariel CohenVery happy with the service we received.Posted on Google
MartyThe owner went above and beyond and was very accommodating. Highly recommend!Posted on Google
Lisa WindomNo notice of eta, but the trch was very knowledgeable and polite and had my problem resolved in a timely manner.Posted on Google
Doug Blevins Agency & AssociatesJ&J handles all of our security needs and we highly recommend. We recommend them to all our of our policy holders!Posted on Google
Leo DanielsJohnny showed up on time. He got right to work enabled my system to be functional again. I found me a new friend ThanksPosted on Google
Benjamin CooperMy installation was a little tricky but they worked it out great. They are very.very professional, knowledge, and displayed a wonderful sense of humor. I will definitely continue to use them. ThanksPosted on Google
Esther CarsonJ&J Security did a fantastic job putting up cameras in our community. They are reliable, skilled, proffessional yet friendly and affordable. I highly recommend them for your security needs.Posted on Google
Sharon YoungJohnny has been extremely professional, reliable, and personable throughout all of our interactions. He is responsive when contacted, shows up on time for appointments, and consistently goes above and beyond to ensure the job is completed thoroughly and correctly. I would highly recommend Johnny for any security needs. His dedication and attention to detail truly set him apart.
Pricing depends on your home’s size, how many entry points you want covered, and whether you add cameras or professional monitoring. Instead of a one-size-fits-all package, we walk your property and give you a transparent, upfront quote with no high-pressure sales pitch.
Most single-family homes in Marietta and the surrounding Cobb County area are completed in a single day. We’ll give you a clear installation window during your free consultation and work around your schedule.
Yes. Every system we install integrates with an intuitive mobile app, so you can arm or disarm your system, view live camera feeds, and get instant alerts wherever you are.
Yes. Our monitoring team watches for triggered alarms around the clock and can dispatch local emergency responders the moment a break-in, fire, or other emergency is detected, even if you can’t be reached right away.
In most cases, yes. Our technicians can evaluate your current panel, sensors, and wiring to determine what’s reusable, then upgrade you to a modern smart system, often without tearing everything out.
Yes. Most Marietta customers combine a monitored alarm system with indoor and outdoor cameras for full coverage, all controlled from one mobile app. We’ll help you decide what makes sense for your property.
Yes. We cover the City of Marietta and unincorporated East Cobb, including the Roswell Road, Johnson Ferry, Sandy Plains and Post Oak Tritt corridors, plus Kennesaw and Smyrna on the same routes.
Cobb County and the City of Marietta have false-alarm reduction ordinances. We walk you through any registration that applies to your address at installation and configure the system to minimize false dispatches.
Based in Snellville, J&J Security Systems installs and services residential security systems throughout Marietta and the surrounding Cobb County communities.
