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ADT, your trusted Home Security Provider in Modesto, CA
(800) 489-9070ADT provides professional home security installation and 24/7 monitoring to homeowners across Modesto, California, and surrounding counties, including Stanislaus, Merced, San Joaquin, Calaveras, Tuolumne, and Mariposa. The Modesto branch also serves communities from Merced to Lodi along Highway 99 and from Santa Nella to Lodi along I-5. The ADT Modesto team serves neighborhoods throughout the city, including the College Area, La Loma, Village One, Dry Creek, and North Modesto. Located near State Route 99 and State Route 132 along the Tuolumne River, near the landmark Modesto Arch, the Modesto branch covers the city and the surrounding Northern San Joaquin Valley communities.
Modesto homeowners face seasonal security considerations, from property protection across a growing Central Valley city to extreme-heat and flood monitoring. ADT's 24/7 professional monitoring provides continuous coverage, including notifications for intrusion, fire, carbon monoxide, and environmental hazards. ADT operates six company-operated monitoring centers, all U.S.-based and not outsourced.
4725 Enterprise Way, Ste. 5
Modesto CA 95356
United States
(209) 409-3576
Nearby Cities
Mon-Fri: 8AM - 4PM
Sat-Sun: Closed
Mon-Fri 7AM to 9PM
Sat 8AM to 6PM
Sun 9AM to 6PM
Happy Customers in the Modesto Area
Archie
Modesto, CA
“Alarm didn't reset - not the fault of the system. ADT provides great service. Getting use to new system and you must disarm the system before opening even the garage door to the side of the garage but that's good. Added security for my wife.”
Anderson
Stockton, CA
“I really like my service that I am getting from ADT, as a new customer I have been very pleased. I really like the pulse. It is easier use, it let me see what is going on most of all the price is great. The only thing I wish that I had another alarm key for when I go on. I can give my keys to my neighbor whom will be watching my home. Great alarm company ever.”
Richard
Stockton, CA
“Installation was easy, panel is what I ordered; a two way system that allows ADT to talk to me through the system. In the few times I set the system off on accident, the ADT people were polite and professional.”

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Modesto, CA Service Area & Local Process
The ADT Modesto branch provides professional installation of the ADT Smart Home Security System throughout Stanislaus County and neighboring areas, including Merced, San Joaquin, Calaveras, Tuolumne, and Mariposa counties. Our service area extends from Merced to Lodi along Highway 99 and from Santa Nella to Lodi along Interstate 5, serving communities such as Ceres, Turlock, Riverbank, Oakdale, and Salida. Installation times depend on the home, system configuration, equipment selected, and installation conditions.
The Central Valley brings extreme summer heat and dense winter tule fog, while the Tuolumne and Stanislaus rivers create flood risk in low-lying areas and the nearby Sierra foothills raise wildfire risk during dry, windy stretches. Smoke and carbon monoxide detectors are practical additions for Modesto homes, supporting early notifications for fire and wildfire smoke. The ADT Smart Home System includes backup battery power to help keep the system powered during a power outage. If internet service is disrupted, cellular backup may help keep the system connected to ADT monitoring, as long as you have an active ADT monitoring plan and cellular service is available.
Modesto, CA Local Regulations & Requirements
The City of Modesto requires alarm owners to file an alarm permit with the Modesto Police Department's Alarm Reduction Unit under Modesto Municipal Code Section 3-11; there is no charge to file the permit, but homeowners who do not have a permit on file may be billed (City of Modesto). The Modesto Police Department also uses verified response: officers are not routinely dispatched to a burglar alarm unless the alarm is verified through on-site audio or video equipment or a private security service, while panic, robbery, duress, and hold-up alarms remain high priority (City of Modesto).
Homeowners in Modesto condominiums and rentals should verify installation permissions with their property management or HOA before scheduling professional installation.
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You have questions, we've got you covered
Do I need an alarm permit in Modesto, California?
Yes. The City of Modesto requires alarm owners to file an alarm permit with the Modesto Police Department's Alarm Reduction Unit under Modesto Municipal Code Section 3-11; there is no charge to file, but you may be billed if you do not have a permit on file (City of Modesto). Your ADT professional installation technician can provide guidance during your consultation.
How does Modesto's verified-response policy work?
The Modesto Police Department does not routinely dispatch officers to a burglar alarm unless it is verified through on-site audio or video equipment or a private security service; panic, robbery, duress, and hold-up alarms remain high priority (City of Modesto). This makes verification valuable. With alarm verification through Alarm Messenger™, ADT has seen over a 50% reduction in false alarm dispatches at sites enrolled in Alarm Messenger™ compared to sites not enrolled in Alarm Messenger™. Based on internal ADT data collected over the lifetime of Alarm Messenger™ (2021-current).
Does ADT install security systems in Modesto condos and apartments?
ADT offers professional installation for condos, townhomes, and apartments in Modesto, including properties in the College Area, La Loma, and near downtown. Before scheduling, verify with your property management or HOA that security system installation is permitted.
What areas near Modesto does ADT serve?
The ADT Modesto branch serves homeowners throughout Stanislaus County and neighboring areas, including Merced, San Joaquin, Calaveras, Tuolumne, and Mariposa counties. Our service area extends from Merced to Lodi along Highway 99 and from Santa Nella to Lodi along Interstate 5, serving communities such as Ceres, Turlock, Riverbank, Oakdale, and Salida.
How long does ADT installation take in Modesto?
Installation times depend on the home, system configuration, equipment selected, and installation conditions. The installation includes setup of the ADT Base, sensors, cameras, and full system configuration through the ADT+ app.
Does ADT offer monitoring during extreme heat and flood season in Modesto?
ADT's 24/7 professional monitoring provides continuous coverage during the Central Valley's extreme summer heat and the winter flood season along the Tuolumne and Stanislaus rivers. The ADT Smart Home System includes backup battery power to help keep the system powered during a power outage. If internet service is disrupted, cellular backup may help keep the system connected to ADT monitoring, as long as you have an active ADT monitoring plan and cellular service is available.
Can I add cameras or smart home devices to my ADT system after installation?
ADT customers in Modesto can add cameras, smart locks, smart lighting, and additional sensors to their ADT Smart Home System at any time after initial installation. Cameras also support ADT+ video verification, which is especially useful under Modesto's verified-response policy.
Are there insurance discounts for security systems in California?
Some insurance companies offer discounts on homeowner’s insurance. Please consult your insurance company. ADT also offers up to a $500 theft protection guarantee if a break-in occurs while your system is being monitored. Terms and conditions apply, see here for terms.