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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon134
    Verified home security system services reviews

Verified Reviews for Home Security System Service pros in Gaithersburg, MD

*The Angi rating for Home Security System Service companies in Gaithersburg, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.

*The HomeAdvisor rating for Home Security System Service companies in Gaithersburg, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.

Last update on June 05, 2026

Find Home security system pros in Gaithersburg

Avatar for SafeStreets - ADT Authorized Provider
SafeStreets - ADT Authorized Provider
4.8(
320
)
Surveillance Cameras - Install or RepairAlarm or Security System - InstallAlarm or Security System - Install - For Business+5 more

Serving Gaithersburg, MD and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

"SafeStreets security system is incredibly reliable and easy to use. The app is intuitive, and the home automation features are a game-changer. I love being able to monitor my home from anywhere. Great service all around."
Additional Photos
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+1

9 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Ultra Guard Security Systems
Ultra Guard Security Systems
4.9(
182
)
Alarm or Security System - InstallAlarm or Security System - Install - For BusinessAlarm or Security System - Monitor+3 more

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1988

Free estimates

Emergency services offered

"Ultra Guard was truly great. They know their products and are extremely professional. We have had them install security systems at our home, horse farm and car warehouse. Can't recommend them enough! We can recommend them without reservation!"
Additional Photos
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+21

Recommended by97%of homeowners
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Avatar for ADT
ADT
4.5(
862
)
Surveillance Cameras - Install or RepairAlarm or Security System - InstallAlarm or Security System - Repair+5 more

Serving Gaithersburg, MD and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"ADT’s security system is incredibly reliable and easy to use. The app is intuitive, and the home automation features are a game-changer. I love being able to monitor my home from anywhere. Great service all around!"
Home Security Essentials
Smart Home Security
Cameras
Our Team
Home Security Essentials

+35

78 neighbors recently requested a quote
Recommended by88%of homeowners
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Modern Systems Integration, LLC
4.0(
82
)
Surveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"I have them installed security cameras in my house. The workers were professional and knowledgeable. The equipments of their choice are also good. I paid more than I originally expected, but overall speaking the experience is good and I am comfortable."
Response time1 day
24 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for Sengroup Solutions
Sengroup Solutions
4.9(
77
)
Surveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Gaithersburg, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Credit card accepted

"I received many helpful hints about security for my business."
Dr Office open rack install and cameras
Open IT rack dr Office
Enclose reck
Clients
Camera upgrade

+7

Response time2 days
12 neighbors recently requested a quote
Recommended by88%of homeowners
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Avatar for All About Sound & Video
All About Sound & Video
4.9(
19
)
Building Automation System - Install or Service - For BusinessSmart Home System - Install or Service

Serving Gaithersburg, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

Upgrade your home with home entertainment and security system installations from our company. We pride ourselves on the quality work we provide, while delivering great customer service! Call -or- click to schedule a free estimate today!\n \n

Featuring colored backlighting - all custom
Control panel
Lutron Sivoia automated and controlled blinds
Control4 controlled lighting panel
Renovation of a sports bar- 6 tvs and surround sound

+5

2 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for Glc
Glc
4.9(
13
)
Smart Home System - Install or ServiceAlarm or Security System - InstallAlarm or Security System - Install - For Business+7 more

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"Everything went great. Installation of my security cameras looks great. All my questions were answered and great customer service."
Home Security Systems Project
20p touch screen panel.
Additional Photos
Additional Photos
Additional Photos

+40

Response time1 day
1 neighbors recently requested a quote
Recommended by69%of homeowners
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Avatar for TomsBurg Surveillance
TomsBurg Surveillance
5.0(
21
)
Surveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

Tomsburg is a cutting-edge surveillance technology that meet the needs of both commercial and residential customers. We stive to provide security that pass on to you, the customer, the very best services that renders the peace of mind you desire while away or at home. We service the Maryland, Virginia, Delaware, and Pennsylvania area with high resolution CCTV surveillance cameras that detect any form of intrusion.

Office Work
Bowie
Response time3 hrs
Response rate87%
Recommended by100%of homeowners
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Avatar for Next Level Tecnologies Group, LLC
Next Level Tecnologies Group, LLC
4.8(
38
)
Building Automation System - Install or Service - For BusinessSurveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Bill, the owner, and Brandon, the technician, both provided world-class customer service from start to finish. To begin, Bill stopped by to perform the in-home consultation and provided recommendations on how he could bring my vision to life with indoor/outdoor security cameras. Brandon did an outstanding job with the installation of all of my Google Nest cameras, assisting with camera placement for the best viewing angle, seamlessly fishing the power cables through the walls, and adding a classy touch by installing brush pass-through wall plates. Brandon managed smaller details such as the cable management for the outdoor camera above my garage flawlessly as it was presented in a clean and neat manner. Both Bill and Brandon treated my home as if it were their own and I will definitely seek to work with them again in the future. Candidly, I had another in-home consultation conducted by one of the big box retailers to help with this project prior to looking to Home Advisor, but I was so disappointed with that experience that I'm glad that I was paired up with NexImage Inc. If you are looking for service professionals that will get it right the first time, look no further than NexImage Inc. Thank you again Bill and Brandon!"
Game Day!
Comfort in Style!
Conference Room Configurations
Secure Your Sanctuary
Decorative Cabinet for TV

+25

Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for En Motion Security Solutions
En Motion Security Solutions
4.8(
4
)
Building Automation System - Install or Service - For BusinessSurveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Very professional company. They make sure you are happy at all times-and explain the entire process. Their camera system have given me extra security at night time Would highly recommend."
Response time40 mins
Recommended by100%of homeowners
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Home Security Systems questions, answered by experts

False alarms happen, and they could be due to a problem you need to troubleshoot, like faulty wiring, a mistaken setting, or the system needing an update. Turn off your system by disconnecting its power supply (both the battery and transformer) and give the manufacturer a call to see what they advise. 

The cost of home automation averages around $1,000, with most projects falling between $200 and $2,000. The total cost depends on several factors, including the level of automation, brand, system features, home size, and location. For a DIY approach, basic home automation technology can cost between $100 and $500, though the scope and interaction between products may be limited. High-end, all-inclusive systems for larger homes can cost anywhere from $10,000 to $150,000, especially when they include smart appliances like refrigerators and dishwashers that require extensive wiring. Additional costs, such as subscriptions for maintenance services, can also impact the total price. It's often helpful to set a budget and consult with an expert to determine the best options for your home.

It depends on the type of sensor your home security system uses. If it’s a motion detector, any moving thing could set it off, from a roaming pet to a wind-blown curtain. Contact sensors would be triggered by the window being opened or moved. Also, be aware that any sensors placed too close to your vents could trigger false alarms whenever your heat or air conditioning is running.

Yes, it’s possible a burglar can get through a deadbolt. Some types of deadbolts are harder for an intruder to get through, though. For example, a single-cylinder lock only requires breaking a window nearby and simply turning it. While other locks, such as a double-cylinder lock, may offer greater protection and make it harder for an intruder, no deadbolt is 100 percent effective.

While many security cameras rely on an internet connection to transmit footage and store it in the cloud, not all of them stop working when the Wi-Fi is off. Some models are designed to function offline by using local storage options, such as a microSD card or a network-attached storage (NAS) device. These cameras can continue to record footage even without an internet connection. You can then access the stored data once the Wi-Fi is restored.

The Gaithersburg, MD homeowners’ guide to home security system services

From average costs to expert advice, get all the answers you need to get your job done.

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