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ADT, your trusted Home Security Provider in Elmsford, NY
(800) 489-9070ADT provides professional home security installation and 24/7 monitoring to homeowners across Elmsford, New York, and the surrounding Westchester County area. The ADT Elmsford team serves neighborhoods throughout the lower Hudson Valley, including White Plains, Tarrytown, Yonkers, Scarsdale, and the communities along I-287 and the Saw Mill River Parkway.
ADT has six company-operated 24/7 monitoring centers, the largest presence in the industry. All of our monitoring centers are based in the U.S. and are not outsourced. ADT has been offering and enhancing professional monitoring for more than 150 years.
125 Clearbrook Rd
Elmsford NY 10523
United States
(914) 610-3184
Nearby Cities
Mon-Fri: 8AM - 4PM
Sat-Sun: Closed
Mon-Fri 7AM to 9PM
Saturday 8AM to 6PM
Sunday 9AM to 6PM
Happy Customers in the Elmsford Area
James
Elmsford, NY
“The response time is great and assuring. We have had to phone ring in two different times at about a second after the alarm goes off. Plus our Fire Department was only 10 minutes getting here after the alarm went off. I would tell anyone to get ADT.”
Alan
Elmsford, NY
“ADT has met my expectations. They immediately respond if the alarm is set off. That's all I can ask for. My phone conversations have been brief but the people on the other end of the phone have been polite and helpful.”
Carol
Elmsford, NY
“The ADT customer team was extremely helpful and knowledgeable. I was very pleased with the service they provided, the quick appointment and the follow-up service they provided also. I would highly recommend ADT services to others and would never switch service companies.”

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Elmsford, NY Service Area & Local Process
The ADT Elmsford branch provides professional installation of the ADT Smart Home System throughout Westchester County and surrounding areas, including White Plains, Tarrytown, Yonkers, Scarsdale, New Rochelle, and Mount Kisco.
The lower Hudson Valley experiences nor’easters, heavy snow, and ice storms in winter, along with severe thunderstorms and flooding in summer. 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. Water and temperature sensors are a practical addition for Westchester County homes, where aging infrastructure, creek flooding near the Saw Mill River, and winter freeze risk create environmental monitoring needs.
Elmsford, NY Local Regulations & Requirements
Contact your local village, town, or city police department within Westchester County to verify current alarm permit and registration requirements. New York municipalities set their own alarm ordinances, and requirements vary across Westchester County. Your ADT professional installation technician can provide guidance during your consultation.
Homeowners in apartments, condominiums, and co-ops in the Elmsford area should verify installation permissions with their property management or building board before scheduling professional installation.
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You have questions, we've got you covered
Do I need an alarm permit in Elmsford, New York?
Contact your local village, town, or city police department within Westchester County to verify current alarm permit requirements. New York municipalities set their own alarm ordinances, and requirements vary. Your ADT professional installation technician can provide guidance during your consultation.
What areas near Elmsford does ADT serve?
The ADT Elmsford branch serves homeowners throughout Westchester County and the lower Hudson Valley, including White Plains, Tarrytown, Yonkers, Scarsdale, New Rochelle, Mount Kisco, and Ossining.
How long does ADT installation take in Elmsford?
ADT professional installation times in Elmsford vary depending on the home’s size and the number of devices being configured. The installation includes setup of the ADT Base, sensors, cameras, and full system configuration through the ADT+ app.
Does ADT install in Westchester County apartments and condos?
ADT offers professional installation for apartments, condos, and co-ops throughout Westchester County. Before scheduling, verify with your property management or building board that security system installation is permitted.
Does ADT offer monitoring during nor’easters in the Hudson Valley?
ADT’s 24/7 professional monitoring is available 24/7 during nor’easters, heavy snow, and ice storms common in the lower Hudson Valley. 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. Water and temperature sensors can provide early notifications for pipe freezes and flooding near the Saw Mill River.
Can I add cameras or smart home devices after installation?
ADT customers in Elmsford can add cameras, smart locks, smart lighting, and additional sensors to their ADT Smart Home System at any time.