Protect Your Home in Largo Today!

ADT Home Security in Largo, FL

We’re here to deliver the best home security equipment and services to fit your needs - since 1874. Largo homeowners trust ADT to help them protect what matters most.

Brick house with an ADT sign out front

Compare pro-installed smart security packages

Compare pro-installed smart security packages

Secure Home
Smart Home
Video & Smart Home
Intrusion detection
Our Best Package
Fire, CO & flood monitoring
Voice control
Touchscreen control panel
Remote access mobile app
Smart home automation
Video security
Stored video clips


Looking for a DIY security system?

Looking for a DIY security system?

ADT is Largo’s choice for home security


Whether you’re at home or away at work, we ensure your Largo residence is monitored 24/7 for your family’s safety and protection. Largo and surrounding area homeowners count on ADT to professionally install and monitor their homes every day. ADT home security systems can include:

  • Digital panel 
  • Entryway contacts 
  • Wireless keychain remote 
  • Motion detector
  • Yard signs and window decals 
  • 24/7 monitoring

At ADT, we believe in protecting what matters most. If your security system sensors are triggered, ADT will alert emergency responders to your home for you. Largo homeowners can also receive automated customized mobile alerts.

Happy Customers in the Largo Area


ADT Security Services is rated 4.5 out of 5 stars based on 70 customer reviews from the Largo area

Largo, FL
via ConsumerAffairs
5-star rating

Nov. 19, 2017

"I was very pleased with the upgrade of system. LOVE THE CAMERAS. Was pleased with the installer too. He was very personable & knowledgeable about his work. Cleaned up after himself. 

Glad for the upgrade of the system. Feel very safe now the cameras are in."

Largo, FL
via ConsumerAffairs
5-star rating

June 22, 2017

"We love our new security system! It replaced another one we had and we're so glad. Our security consultant/installer was very professional. The customer service is fantastic as well. 

We wish every company was as good as ADT. We made a great choice and we are very satisfied!"

Clearwater, FL
via ConsumerAffairs
5-star rating

April 21, 2017

"I have been using ADT for over 10 years. I have been able to get help over the phone and also all the servicemen that come to the house are so knowledge, nice, and helpful. 

Quality of service is 10+ in my book. I always feel secure with the security provided."

ADT Largo Service Area

Our ADT Largo team offers professional home security installation and a variety of security and automation products and solutions.

  • Check Mark Same-Day Installation
  • Check Mark 6-Month Money-Back Guarantee*
  • Check Mark 24/7 Live Phone Support

*Subject to certain restrictions

  • Largo Office Hours
  • M-F 8am - 4pm
  • Sat/Sun Closed
  • Questions? Call Us Today!
  • M-F 7am - 9pm
  • Saturday 8am - 6pm
  • Sunday 9am - 6pm
Nearby Cities
  • Clearwater
  • Indian Shores
  • Gandy
  • North Redington Beach
  • Bay Pines
  • Dunedin
  • Oldsmar
  • Pinellas Park
  • Kenneth City

With ADT smart home automation you never have to worry about forgetting to turn off appliances, setting the alarm, or walking into a dark house. ADT home security systems installed in Houston offer advanced features when paired with ADT Command - our cutting edge home automation service. The ADT Control smart home mobile app gives you full access to your security alarm and smart home equipment, whether you're in Houston or anywhere else life may take you.

With ADT Control you can easily control your smart home’s equipment on the go. You’ll be able to:

  • Arm and disarm your system
  • Receive automated security mobile alerts 
  • Adjust your smart thermostat 
  • Control smart lights 
  • Lock and unlock smart locks

Our home automation service is matched with our dedication to giving you the fastest response when your security alarm is triggered.

Keep an eye on your home, pets and loved ones with trust-worthy security cameras and surveillance systems. Your surveillance system will automatically start recording if your alarm is ever triggered, and notifications are pushed to your smartphone or tablet. Not only do these investments provide peace of mind, they can also assist with discounts on your homeowners insurance.

Easily maintain control of your home and improve your quality of life with this convenient technology. This provides a simple solution for monitoring all aspects of your home, regardless of where life takes you, from safety (by seeing who is at your front door) to energy consumption. Smart home systems are great for all living situations whether you live in a house, condo, apartment or mobile home.

Get smarter home security with remote control of your system and more. 

Burglary Monitoring

Our home alarm security systems are constantly monitoring to ensure that once a burglary alarm is received at a Customer Monitoring Center, a trained ADT professional will notify you and first responders quickly.

Fire and Smoke Monitoring

When a fire and smoke detector in one of our home security systems is received, a trained ADT professional will notify you and your local fire department as quickly as possible.

Medical Alert Monitoring

Never feel alone again with ADT medical alert monitoring in our home alarm security systems. Push a button to be connected to a trained ADT professional through the two-way voice intercom system. If assistance is needed, this professional will contact the appropriate emergency response services.

Security Camera Systems

With an ADT wireless home security camera system, you can do more than monitor your home security remotely — you can manage your life. For example, looking in on the cable repairman from your office.

Carbon Monoxide Monitoring

A carbon monoxide (CO) leak can spell serious harm for you and your family since it can be impossible to detect without a warning device. Make your home a safer place with CO monitoring services available with most ADT home security systems.