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TRUSTED BY KEYMAR, MD HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon41
    Verified home security system services reviews

Find Home security system pros in Keymar

"They are very responsive, timely and fixed my problems. They work with us on an annual basis."

JANE P on March 2023

We are a local boutique security company in Gaithersburg, MD. We offer solutions from residential smart homes to full commercial operations. Personal service, expert design and installation, and cutting edge technology are our strengths.

"They are very responsive, timely and fixed my problems. They work with us on an annual basis."

JANE P on March 2023


Avatar for SafeStreets - ADT Authorized Provider

SafeStreets - ADT Authorized Provider

4.89(
293
)
Approved Pro

SafeStreets - ADT Authorized Provider

4.89(
293
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
15 years of experience

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"In the past we’ve avoided getting into agreements or contracts with our home security providers but felt comfortable and confident doing so with Safe Streets. Their monitoring and surveillance centers are nationwide and open 24 hours. They made the process really easy and informed us of all the benefits by being under monitoring agreement. Told both of our neighbors about our experience and they plan to sign up too."

Jacob F on November 2025

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"In the past we’ve avoided getting into agreements or contracts with our home security providers but felt comfortable and confident doing so with Safe Streets. Their monitoring and surveillance centers are nationwide and open 24 hours. They made the process really easy and informed us of all the benefits by being under monitoring agreement. Told both of our neighbors about our experience and they plan to sign up too."

Jacob F on November 2025


"Highly recommended to refer. This man gets the job done; effectively and professionally. I am beyond grateful for his services provided. Thank you again GnG "

Lamar M on December 2025

A family owned and operated handyman and junk removal service company established in 2017. We focus on fair flat pricing providing electrical, plumbing, carpentry, drywall painting, exterior, landscaping, andso much more

"Highly recommended to refer. This man gets the job done; effectively and professionally. I am beyond grateful for his services provided. Thank you again GnG "

Lamar M on December 2025


Avatar for ADT

ADT

4.53(
744
)
Approved Pro

ADT

4.53(
744
)
Approved Pro
Super Service Award
Customers say: Terrific value
151 years of experience
Free onsite estimate

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"5 STAR REVIEW FOR ADT SALES REPRESENTATIVE FRANK G. PROFESSIONAL, COURTEOUS, AND EXTREMELY KNOWLEDGEABLE ABOUT THE SECURITY INDUSTRY."

Alesia B on December 2025

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"5 STAR REVIEW FOR ADT SALES REPRESENTATIVE FRANK G. PROFESSIONAL, COURTEOUS, AND EXTREMELY KNOWLEDGEABLE ABOUT THE SECURITY INDUSTRY."

Alesia B on December 2025


"Antonio was great. I had 2 ceiling fans installed on a 15 foot high pitched ceiling. The fans I purchased were meant for a ceiling with a much smaller pitch so they were not able hang straight as is. I thought I would have to wait and buy some additional hardware to complete the job but Antonio clearly communicated with me to show me why they wouldn’t work and talked me through a few ideas he wanted to try to make it work. It took a bit more time but in the end he was able to make some cuts and holes to the fans and they worked out great in the end. He saved me some time and money so I was happy to leave him with a tip. "

Monika W on December 2025

10 Years Of Experience. Provides Exceptional & Guaranteed Residential Work. Put Clients Needs First Before Anything. www.jaelectricllc.net

"Antonio was great. I had 2 ceiling fans installed on a 15 foot high pitched ceiling. The fans I purchased were meant for a ceiling with a much smaller pitch so they were not able hang straight as is. I thought I would have to wait and buy some additional hardware to complete the job but Antonio clearly communicated with me to show me why they wouldn’t work and talked me through a few ideas he wanted to try to make it work. It took a bit more time but in the end he was able to make some cuts and holes to the fans and they worked out great in the end. He saved me some time and money so I was happy to leave him with a tip. "

Monika W on December 2025


"We were hoping to get everything operating on one remote, but we donâ t live in a perfect world. The technician was able to show us new and wonderful things with our system though, and he was able to navigate the hideous tangle of wires pretty successfully through the whole process."

Charles G on August 2023

We offer solid experience in commercial and residential audio/video distribution. This includes dedicated theatre and/or media rooms; security cameras and lighting control. We've established a top-notch reputation in the greater Washington, D.C. area.

"We were hoping to get everything operating on one remote, but we donâ t live in a perfect world. The technician was able to show us new and wonderful things with our system though, and he was able to navigate the hideous tangle of wires pretty successfully through the whole process."

Charles G on August 2023


Avatar for JS Castle Contracting

JS Castle Contracting

4.97(
15
)
Approved Pro

JS Castle Contracting

4.97(
15
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
20 years of experience

At JS Castle Contracting, LLC, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Have used Joe 3 times now. First to replace 4 exterior doors. Second to refinish some interior paint and trim. Lastly for a complete kitchen remodel. Each and every time he was prompt and very professional with great attention to detail. He has a permanent place in my address book and will certainly be called on again, probably sooner than later."

patrick w on September 2021

At JS Castle Contracting, LLC, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Have used Joe 3 times now. First to replace 4 exterior doors. Second to refinish some interior paint and trim. Lastly for a complete kitchen remodel. Each and every time he was prompt and very professional with great attention to detail. He has a permanent place in my address book and will certainly be called on again, probably sooner than later."

patrick w on September 2021


Avatar for 4 Peace On Earth Properties

4 Peace On Earth Properties

4.89(
18
)
Approved Pro

4 Peace On Earth Properties

4.89(
18
)
Approved Pro
Customers say: Quality work
4 years of experience
Free onsite estimate

Our mission is to provide reliable and high-quality repair and maintenance services that enhance the value and functionality of homes, businesses, and properties. We strive to build long-lasting relationships with our clients by delivering exceptional customer service, personalized attention, and fair pricing. Our team of skilled handymen is dedicated to providing timely and efficient solutions to any repair or maintenance challenge, and we are committed to exceeding our clients' expectations every time. At our company, we believe that a well-maintained property is a happy property, and we are proud to help our clients achieve their maintenance goals.

"Timely, Did a good job, made sure job was done correctly, cleaned up afterwards "

Robia T on December 2025

Our mission is to provide reliable and high-quality repair and maintenance services that enhance the value and functionality of homes, businesses, and properties. We strive to build long-lasting relationships with our clients by delivering exceptional customer service, personalized attention, and fair pricing. Our team of skilled handymen is dedicated to providing timely and efficient solutions to any repair or maintenance challenge, and we are committed to exceeding our clients' expectations every time. At our company, we believe that a well-maintained property is a happy property, and we are proud to help our clients achieve their maintenance goals.

"Timely, Did a good job, made sure job was done correctly, cleaned up afterwards "

Robia T on December 2025


Avatar for ALC Construction, LLC

ALC Construction, LLC

5.00(
9
)
Approved Pro

ALC Construction, LLC

5.00(
9
)
Approved Pro
Customers say: Quick response
26 years of experience
Free onsite estimate

ALC Construction, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"This was the second time we had Anthony and his son out to do work, and we were as satisfied as we were the first time. They finished the job promptly and professionally, and, as usual, stuck to the price quoted. We plan to hire them again next time we need work done. "

Gordon M on August 2025

ALC Construction, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"This was the second time we had Anthony and his son out to do work, and we were as satisfied as we were the first time. They finished the job promptly and professionally, and, as usual, stuck to the price quoted. We plan to hire them again next time we need work done. "

Gordon M on August 2025


Modern Systems Integration, LLC

4.31(
71
)
Approved Pro

Modern Systems Integration, LLC

4.31(
71
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
13 years of experience

Modern Systems Integrations, LLC is dedicated to providing you with a security solution that protects your valued business property and equipment allowing you peace of mind. Would you like to work with a surveillance company that can and will help with your concerns and find a solution that fits your needs? Are you tired of being sold on a great product only to find the customer service is lacking? Would you like to deal with a company that cares about you and your business? A company that is competitively priced and comes with experienced professionals? Well then you've come to the right place! We are based on customer satisfaction, not just supplying our customer with a great product, but also building relationships one company at a time.

"Terrible customer service. They are all very nice at the beginning when they install your security system. Now after 4 years, I have called to report one of the cameras not working, they do not respond to your calls or emails. "

Barbara A on July 2025

Modern Systems Integrations, LLC is dedicated to providing you with a security solution that protects your valued business property and equipment allowing you peace of mind. Would you like to work with a surveillance company that can and will help with your concerns and find a solution that fits your needs? Are you tired of being sold on a great product only to find the customer service is lacking? Would you like to deal with a company that cares about you and your business? A company that is competitively priced and comes with experienced professionals? Well then you've come to the right place! We are based on customer satisfaction, not just supplying our customer with a great product, but also building relationships one company at a time.

"Terrible customer service. They are all very nice at the beginning when they install your security system. Now after 4 years, I have called to report one of the cameras not working, they do not respond to your calls or emails. "

Barbara A on July 2025

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Home Security Systems questions, answered by experts

Yes, keyless locks can be quite safe, but their security depends on the type and quality of the lock you choose. Many keyless locks offer added features like biometric access, PIN codes, and smartphone connectivity, making them potentially more secure than traditional locks. However, keyless locks can also be susceptible to hacking, battery failure, or technical malfunctions, so it's important to choose a reliable brand and stay on top of software updates and maintenance.

In general, daytime visibility for security cameras ranges from 10 to 70 feet. Higher-end cameras may have night vision that records 100 to 200 feet out. When shopping for any type of security camera, it's important to pay attention to focal length, resolution, and infrared technology to get an idea of the depth and crispness that will be used when capturing images.

Yes, many providers offer remote troubleshooting and monitoring for business networks.

Some Christmas lights are marked as being “UL Safety Certified” or Underwriters Laboratories Safety Certified. This lab is a trusted source for determining the safety standards of electrical products—you should make sure your Christmas lights have this label. Brush up on other electrical safety tips before installing any lighting features. 

The average cost of a home security system is about $700, ranging from $280 to $1,150. Costs to consider include equipment, surveillance fees, and other additional features. Cost factors that determine your system’s price include the type of security system, materials, labor, activation fees, monthly fees, and permits. Additional features and upgrades may include:

  • Video surveillance monitoring: $40–$65 per month

  • Smart home locks: $150

  • Smart home lighting: $15–$90

  • Smart smoke, fire, and carbon monoxide alarms: $35–$100

  • Smart thermostat: $130–$500

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

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