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Metro Detroit’s Best Security Monitoring Systems

Since 1930, Guardian Alarm has been the trusted source of home and commercial security systems for countless Metro Detroit families and business owners.

*FOR A LIMITED TIME, NEW CUSTOMERS CAN GET 60% OFF WITH A FREE $300 SECURITY CAMERA

*New residential customers only. Cannot combine offers. Monitoring agreement required. Some restrictions apply. 

Home Security

See our security packages and specials – all with 24/7 monitoring and no-cost installation.

Business Security

Security and fire protection systems built for your business and monitored 24/7

Home Security

See our security packages and specials – all with 24/7 monitoring and no-cost installation.

Business Security

Security and fire protection systems built for your business and monitored 24/7.


Essentials

A smart starter system that includes door and window sensors plus a motion sensor to catch any unexpected movement. Everything you need to feel secure, right from the start.


Essentials + Video

Stop intruders at key entry points, plus see what’s happening inside or outside from your phone. With live video feeds and real-time alerts you can keep an eye on your home from anywhere.


Essentials + Smart Home

The ultimate in smart home protection. Secure key points of entry with smarter front door security. Live video feeds, alerts and complete control of your home, right from your phone.

Drone shot of a neighborhood protected by Guardian Alarm wireless cameras and security system

Protecting our neighbors

Headquartered in Southfield means that our team lives and works in the Metro Detroit communities that we serve. Making you and your neighborhood our highest priority.

We’re also actively involved with community organizations in the Detroit area to help give back, engage with those living and working around us, and build lasting partnerships.

Discover the Guardian Alarm Difference

Guardian Alarm is the trusted source for countless families looking for comprehensive home security systems in Michigan and Ohio.

Support whenever and wherever with 24/7 monitoring

24/7 Security
Monitoring

With the latest technology, Guardian Alarm will monitor your home to prevent break-ins, fire, or water damage.

Guardian Alarm is close by your community and location.

Locally Owned &
Operated

As a local security company, our team lives and works in the communities that we serve. Making you our highest priority.

Tools

Free Professional
Installation

Our team of security experts is here for you from the first consultation through years of dependable service.

On call support

Complete Maintenance & Support

Whether you need to troubleshoot a signal or need a battery replaced, trust that our team is there when you need us.

Over 90 years of trusted service

Just wanted to share that our Guardian Alarm system install team Michael, TJ and Cameron were all outstanding. The crew had to come out twice because the extremely cold weather initially posed a problem. Michael was so thorough with all the details of our installation and made sure our questions were answered. TJ and Michael also made sure that we were okay with camera positions and alarm device placement before they permanently installed them. They truly worked with us every step of the way and provided great customer service.
Eric was the best tech I have ever had at our home. He was incredibly thorough and professional. Very helpful in explaining what he was doing, never made me feel like I was bothering him.
The past couple days. We have been upgrading our alarm system. New panel. New door bell. New flood lights. New senors. New everything. They been sending tech TJ. Best choice ever. He is always reliable. Friendly. Does the right job every time! I appreciate everything TJ has done!!
Dave Smith was the technician that serviced our system. Very knowledgeable and professional. Thanks
Rudy was awesome! He did a great job installing all of the cameras and was a tremendous help!
Rudy was awesome! He was so helpful getting everything setup and was very friendly!
Your tech Albi was extremely courtesy , knowledgeable and excellent clean up and non-evasive wiring of our additional camera as well as 3 extra sensors. Also, your other tech Andy, who has come out in the past is also great as well.
TJ was great. Went above and beyond to make sure everything was perfect when he left! And is a super nice guy!
Very Professional I Give David Smith 10 ⭐'s Very Great Guy!!!!!
The technician who came to my house was friendly and fixed all issues. He also made some changes to make things work more functionally.
TJ was very professional and knowledgeable of my upgrade. He went through the process of showing me how to operate my new system and explained how it works. Also he was very respectful enough to remove his shoes when he entered my home and I would very much like to thank him for showing me that he cares.
Thank you again!
We had a new security system installed today by Guardian. TJ did the installation. Super nice guy, very knowledgeable and thorough. I love the system and the app is great! Thank you TJ!!
Tim was so very helpful and courteous. He was a great guy and did a great job.
Tim K was out at our business today and got us all set up with a new alarm system. When he was done with the work, he took the time to go over how to arm and disarm the system and how to use the mobile app. It was very helpful. I recommend this service!
Very friendly and knowledgeable. Fast but thorough.
Tim was very quick and efficient and provided the best customer service I have experienced in a while!
Tim Kapottos did an exceptional job updating our system. He was conscientious, thorough, and explained everything very clearly. He provided truly outstanding customer service and it was a pleasure working with him and the Guardian team.
Took his time and made sure everything worked well and that we understood how to operate the system.
TJ did a fantastic job upgrading our system. He took the time to explain everything in detail, ensured we understood our new options, and performed a top-notch installation. He also followed up quickly with some questions we had afterwards. Highly recommended!
Tim the installer was great! Super helpful, knowledgeable, and nice to work with.
Tim did a great job and he was very informative. Thanks a lot for your great service.
Purchase and instalation went great! Very pleased with the system.
Tim Kapottos, my service technician was great during my installation. Friendly and very knowledgeable, very easy to understand. He is definitely a "keeper" employee!
Service via phone call to reconnect two keypads was excellent. The problem occurred after new routers were installed at my house.
The technician was very knowledgeable, patient, friendly, and kind.
The interaction took a long time … probably due to the fact that the technician was dealing with a non-techie grandmother.
My thanks to Roger!
I had three doors replaced in my house and garage. I haven’t painted the trim yet but the alarm sensors had to be reinstalled. The service technician Mike did a great job. He was prompt, courteous and professional.
I couldn’t ask for better service.
Hopefully Mike gets some recognition for his fine work.
Tech was excellent, even cleaned up after he finished.
TJ was very friendly and professional. He installed my alarm and explained everything with patience. Guardian is the way to go for a home alarm system.
TJ was very kind and knowledgeable would recommend to anyone.
The service technician was very knowledgeable about the system. He investigated the cause of the trouble notifications and corrected the problem. He was very energetic and completely investigated the system to make sure everything was working correctly. He will be returning to replace some defective components.
Tim Kapottos deserves more than 5 stars for work “above and beyond” upgrading my Guardian alarm system in the fall of 2025. He is an expert technician, a great problem solver and a genuinely nice person. The upgrades were expected to be relatively simple, but turned out to be more complex. Tim had to solve a number of unexpected problems to complete the work, and he worked methodically to solve each one. He also took the time to explain what was happening. The next time I need a Guardian technician, I hope it’s Tim (or someone he trained).
I got scammed by a home security company. they came with some new updated equipment fancy stuff and I wanted to try it. They told me that they will pay my final bill with my current provider which was guardian I had no problems with guardian home security I just like some of their equipment that they had they told me they would pay that last final bill not to worry when I agreed to go forward with the application I had to unlock my credit and unlock my credit card. And then, in that short period of time, the person the representative Who is at my home apply for a $6000 credit card that I did not OK and I did not approve. He lied to me about everything. I trusted the young man. They all came in from another state. I believe it was California. They were not originally from Ohio so after I cancel my subscription and had all the equipment recovered, I had no service I had no security. I felt naked, and I owe a final bill to close my account with guardian. I feel like a fool that was so stupid of me. Why did I regret it because being on a budget I just didn’t have the extra money laying around to pay a final bill, but the people are guardian understood they were always kind soft spoken never harsh or judging me. The woman I spoke to on the phone was very patient and I want them to take me back please take me back guardian they were good.
TJ came to my home and updated my alarm system . He was polite & professional and explained what he had completed. I would highly recommend TJ.
Tim was great, he explained how to operate the new unit very thoroughly, great customer service.
The representative was friendly and knowledgeable about our monitor. He was willing and able to answer all our questions for us to use our equipment to its fullest pitenti
Service man was great. Knowledgeable and sharp.
5 star service
Tim was awesome! He was very knowledgeable and offered some great suggestions for me! He has an awesome spirit and a caring heart! Thanks, Tim for your help!!
Tim K. Did an exceptional job with my Guardian Alarm Service install. He is knowledgeable and professional. I feel secure.
EXCELLENT! Patient! Attentive & knowledgable. Pleasure to work with. Recommend highly!!!!
TJ was awesome and very dedicated to helping me install my alarm system!
Tim kappottos handled and answer every question I had very professionally very respectful happy with all his work fast and helpful
TJ was awesome. He was professional and got the work done quickly.
Tim totally exceeded my expectations on the recent upgrade of our ancient security system. Even though he was unprepared to encounter such an old system, he was undaunted and cheerfully came up with a solution on the spot. A pleasure working with such a kind, honest and knowledgeable professional. Highly recommended.
I had the pleasure of having Tim Kopottos switch out my smoke detectors. He was very professional, kind, patient and knowledgeable. His knowledge and expertise allowed him to answer any questions I may have had before I could ask him.
Dave went above and beyond! Extremely polite and helpful!
I couldn't have asked for a better technician. Rudy was very knowledgeable respectful of my home and very nice spectrum is lucky to have a worker like that. He explained everything clearly and kept asking if I had any other questions. They need more workers like him. The only disappointment I had was the equipment they use. The wireless contacts they use are large plastic and are unpleasant to look at.
David was very knowledgeable about our system which is quite old and fixed the issue quickly.
Anthony Hart went above & beyond answering any and all questions we had. Everything was done smoothly and as said. Can't be happier with the friendly & professional service. Will be recommending him & guardian to friends & family.
Getting my smoke detector and fire alarm system installed for my mental health group home facility was definitely a job!

The installers Anthony and Dave were very helpful and great at what they do.

I had the pleasure of working with Selena who overlooked the details and was able to work out Some minor issues that we came across.

Keith, their boss was a pleasure to work with and even was able to give me options for the down payment and balance due after installation.

Overall, I appreciate working with Guardian Alarm and would recommend them for any project big or small.

Thank you guys for your time and patience. Im not the easiest costumer for sure…..😉

Wendy Barnes.
Natalie in sales was beyond amazing! Usually when you call big companies you get a robot or someone who seems like they really don’t care. Natalie was so personable and helped my husband get everything in order. If you want a company that you can talk to REAL, local people who care, use guardian
Rudy was fantastic, always checking in with me to let me know where he was in the process and what would be happening next. He was polite, professional, and cleaned up after himself each day. Thanks Rudy!
Sam came to Dundee Housing Commission and was polite, efficient and cleaned up the work area. Would highly recommend his work as a technician or installer.
From the top to the bottom they're great and professional!
Rudy is a super installer. So much too learn and do. Way to go Rudy. We appreciate Guardian and the good work that they do. Rick Rosie Sabo Toledo
Writing for Paws and Whiskers Cat Shelter. Rudy was an excellent tech who made sure all of our cameras were right where they needed to be. He talked us through the process of installation of our new cameras, then also made sure we understood the app. I highly recommend Guardian and highly recommend Rudy to be your technician.
Tech very friendly and professional! Recommend this company. Stands behind their products!
Anthony was very knowledgeable, efficient and respectful
Rudy was very helpful in getting me access to our cameras!
Rudy does an amazing job is always easy to work with!
Rudy did a great job on the install and getting me set up!
Rudy has been amazing, very professional. He even took the time to sit down and teach me the programs
Rudy was great and he made sure we had access control on the gate before employee occupation of building
Rudy is great! He has installed our cameras at multiple location and has done a wonderful job. We request Rudy at each new clinic we open!
Daniel G. was great and explained everything with great detail, thank you for your services.
Was having trouble keeping my codes on my cell phone I called guardian alarm they transferred me to tech got a really good guy walk me through. It had to have. He had a lot of patience to deal with me because I am not that good at this tech stuff so I was very impressed with how he had the patience Guarding alarm is very good. I’ve had them for many many years. Hope this helps.
Mike did a great job. On time and was very prompt and pleasant.
My Guardian Alarm technician was on time very knowledgeable about our system and how to fix my problems. Mike was a true professional and it was a pleasure to have him out to our house!
Eric from Toledo goes the extra mile to ensure your devices are connected & everything works properly! Even after he left, he was back in 20 minutes to fix an unusual glitch that was due to a new update on the phone app. Superior service!! Guardian Alarm has always given us the best professional service, in every way, the anyone could ever hope for! Have been using them for many years.
Guardian Alarm security near me background

Let’s Get Started

Fill out the form to speak with a security expert, choose a package yourself, or take a quick quiz and get recommendations that fit your home & budget. 

Need some help deciding? Call us at 833.476.4212 and a security consultant can assist you.   

Where you can find us

Metro Detroit Headquarters

26711 Northwestern Highway
Southfield, MI 48033

Protecting your neighborhood and beyond

  • Detroit
  • Troy
  • Southfield
  • Farmington Hills
  • Bloomfield Hills
  • Birmingham
  • Livonia
  • Rochester Hills
  • Auburn Hills Royal Oak
  • Novi
  • Warren
  • Dearborn Heights
  • Brighton
  • Sterling Heights
  • Plymouth
  • Madison Heights
  • Canton
  • West Bloomfield
  • Ferndale
  • Wixom
  • Port Huron
  • Marine City
  • Huntington Woods
  • River Rouge
  • Clinton Township
  • Harrison Township
  • Howell
  • Northville
  • Lake Orion
  • Keego Harbor
  • Riverview
  • Taylor
  • Allen Park
  • Belleville
  • Clawson
  • Wayne
  • Westland
  • Washington
  • Oak Park
  • Macomb
  • Dearborn
  • Roseville
  • Milford
  • Saint Clair Shores
  • Commerce Township
  • Waterford
  • Redford
  • White Lake
  • Center Line
  • Highland
  • Inkster
  • Farmington
  • Utica
  • Pontiac
  • Hazel Park
  • Hamtramck
  • Romulus
  • Marysville
  • Mount Clemens
  • Wyandotte
  • Rochester
  • Grosse Pointe Farms
  • Lapeer
  • Metamora
  • Clarkston
  • Grosse Ile
  • Eastpointe
  • New Baltimore
  • Ecorse
  • South Lyon
  • Harper Woods
  • Melvindale
  • Lincoln Park
  • Trenton
  • Algonac
  • Grosse Pointe
  • Fraser
  • Romeo
  • Berkley

In Our Community

Staying involved and giving back

Guardian Alarm cares about the communities we serve. We’re actively involved with local chambers and organizations to help give back, engage with those living and working around us, and build lasting partnerships. Each year, we encourage our employees to spend time volunteering, giving back to their favorite non-profit organizations, and engaging with their community.

Official provider of Project Green Light

Project Green Light started in 2016 as a crime intervention tool. It originally targeted gas stations since they were seen as crime hot spots but has expanded to include fast food restaurants, churches, apartment buildings and more. Guardian Alarm supports Project Green Light by providing the required indoor and outdoor security cameras that transfer live footage from local businesses to the Detroit Police Department.

Detroit Project Gren Light
Free Quote