"go local" be treated like a neighbor not just a customer

N & D  Security

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Your local company

Residential and commercial security systems are our primary areas of expertise.  We use all Honeywell equipment, the #1 manufacturer in the US for alarm equipment.  Our systems are monitored 24/7/365 and you can control your system remotely using your smartphone/tablet/pc. If you currently have an ADT system (they also use Honeywell equipment), switching over to N&D can be quick and easy. Click below to learn more about our services.


Schedule Appointment

Free walkthroughs with one of our technicians. We schedule at exact times so you don't have to waste your day waiting on a 4hr time window.



N&D Security has been a key partner in the successful operation of our home since it was in the construction phase almost 4 years ago today. The service spans anything imaginable from wiring, analyzing different equipment options, implementing effective alarm and intercom systems to the simple but important issues of programming all of the devices. Almost 4 years later, the relationship continues and thrives with N&D but one phone call away from handling any new equipment or maintenance issue that arises. It is this type of turnkey solution that is simply critical in the busy lives that we lead. I enthusiastically endorse N&D Security....
— Michael Desantis, Washington DC
N&D is a family owned and operated business and they treat their customers just like you’re one of the family. They are kind, knowledgeable, and highly professional. The installation took very little time and yet it’s a very impressive system. Moreover, the guys patiently and thoroughly walked me through how to use the system so that when they left I felt comfortable. I should add as well that the cost of the equipment , the installation, and the monthly monitoring is also quite reasonable.
— Steve S, Arlington, VA
After researching home security systems/monitoring for a few weeks I was more confused than the day I started. Many options and many ways to go. I call N&D, spoke with Perry and he was just honest and helpful from the first call. Went over options, pricing, and then then they came to give an estimate. These guys are awesome! Family business, very professional/quick and clean install and a very easy system to use. They do more than just home security/monitoring, and I am sure they are awesome at every service they offer. Cannot recommend these guys enough. If you are reading, Thanks guys.
— Craig, Great Falls, VA
We highly recommend N&D Security. A family run business that is professional, knowledgeable, affordable, and excels at customer service. Unlike larger security companies, you can actually reach a person when you need help, or a question answered - calls are answered and emails are returned. Installation was simple and on time; the price is fair and more than beats the competition. You will never feel like you have been oversold or manipulated. The star of the company is customer service - these folks care about the job they do, and make it their business to be sure you are happy, safe, and satisfied with the system. Highly recommend.
— Jill J, Washington, DC



Our main objective is to be honest and real with everyone we speak with.  With so many large companies existing today you can't get a straight answer about anything and when you have a problem there is no remorse from the mega companies - you deal with someone who isn't invested in the company who honestly doesn't care.  We treat people as we would like to be treated, we guarantee great work and a constant line of communication to fix any problems that may arise as quickly as we possibly can.  We want to keep you satisfied so being with N&D is a plus not a hassle.  


SEE our HANDY WORK and what we use


company bio

We have been an Arlington, VA based company since 1978 and are family owned and operated.  Everyone in the company has 15 years or more in the security field, we know it in and out.  The N&D family is passionate about protecting our homes and loved ones, we extend that to everyone we come into contact with.  Our interest in technology and electronics is the fabric that holds the company together, we really do love what we do.  We are most known for residential and commercial security systems with 24/7/365 monitoring, as well as surveillance systems.  After the installation of a system, we continue to service your system free of charge.  Mega companies with their poor customer service are so frustrating, and we strive to create the opposite experience at N&D.