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ADT, your trusted Home Security Provider in Long Island City, NY

(800) 489-9070
ADT Long Island City, NY

ADT provides professional security installation and 24/7 monitoring to homeowners and small businesses across Long Island City, New York, and the surrounding boroughs. The ADT Long Island City team serves homes and local businesses throughout Queens, Brooklyn, and Manhattan, including Astoria, Sunnyside, Woodside, Jackson Heights, Greenpoint, Williamsburg, Midtown, and the waterfront developments along the East River.

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 Long Island City Location

47-40 21st St

Long Island City NY 11101

United States

(718) 395-2048

ADT Long Island City Locations

Nearby Cities

  • Queens
  • Manhattan
  • Brooklyn
  • Flushing
  • New York
  • Chinatown
  • Jackson Heights
  • Munsons Corner
  • Elmhurst
  • Ridgewood
  • Bedford
  • Brightwaters
Office Hours

Mon-Fri: 8AM - 4PM
Sat-Sun: Closed

Phone Hours

Mon-Fri 7AM to 9PM

Saturday 8AM to 6PM

Sunday 9AM to 6PM

Happy Customers in the Long Island City Area

  • Tyson

    Brooklyn, NY

    “Greeting, I appreciate your service. Customer service is wonderful. Technician that was sent to my home was great. A true professional. This is why you are one of the best alarm company is the nation. I will look forward to future system and software upgrade.”

  • Judy

    Brooklyn, NY

    “ADT responded to the alarm very quickly and the operator was very professional but friendly. Asked all the right questions and wanted to know if she could be of any more assistance. I would definitely recommend ADT to a friend or family member.”

  • Yolanda

    Bronx, NY

    “Your system is very dependable, reliable, secure and a real peace of mind. I would recommend it to all my family and friends. I'll get it anywhere I move, if it's available, of course. Thank you, thank you, thank you for your service! I appreciate it.”

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Long Island City, NY Service Area & Local Process

The ADT Long Island City branch provides professional installation of the ADT Smart Home System for residences, along with tailored small business security solutions—including video surveillance, access control, and intrusion detection—throughout Queens, Brooklyn, and Manhattan.

New York City experiences nor’easters, heavy snow, and coastal flooding in fall and winter, along with severe thunderstorms and heat waves 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 Long Island City homes, condos, and storefronts, where urban flooding, aging building infrastructure, and basement water intrusion are persistent concerns.

Long Island City, NY Local Regulations & Requirements

Contact the NYPD or your local precinct to verify current alarm permit and registration requirements for residential security systems in New York City. Your ADT professional installation technician can provide guidance during your consultation.

Homeowners and renters in Long Island City apartments, condominiums, and co-ops should verify installation permissions with their property management or building board before scheduling professional installation.

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If you’ve moved into a home with an ADT smart home security system that’s still working, we can reactivate it for you—just give us a call.

Frequently Asked Questions

You have questions, we've got you covered

Do I need an alarm permit in Long Island City, New York?

Contact the NYPD or your local precinct to verify current alarm permit requirements for residential security systems in New York City. Your ADT professional installation technician can provide guidance during your consultation.

Does ADT install in Long Island City apartments and condos?

ADT offers professional installation for apartments, condos, and co-ops in Long Island City and throughout Queens, including waterfront high-rises, brownstones, and multi-family buildings. Before scheduling, verify with your building management or co-op board that security system installation is permitted.

Does ADT provide security for small businesses in Long Island City?

Yes. ADT offers professional security solutions for small businesses across Long Island City, Queens, Brooklyn, and Manhattan, including video surveillance, access control, intrusion detection, and 24/7 monitoring backed by six U.S.-based monitoring centers.

What areas near Long Island City does ADT serve?

The ADT Long Island City branch serves homeowners and businesses throughout Queens, Brooklyn, and Manhattan, including Astoria, Sunnyside, Woodside, Jackson Heights, Flushing, Greenpoint, Williamsburg, and Midtown.

How long does ADT installation take in Long Island City?

Installation times depend on the home, system configuration, equipment selected, and installation conditions.

Can I add cameras or smart home devices after installation?

ADT customers in Long Island City can add cameras, smart locks, smart lighting, and additional sensors to their ADT Smart Home System at any time.