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TRUSTED BY SAN MATEO, CA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon22
    Verified home security system services reviews

Top-Rated Home security system pros in San Mateo - Updated Nov 2026

Avatar for ADT
ADT
4.5(
892
)
Surveillance Cameras - Install or RepairAlarm or Security System - InstallAlarm or Security System - Repair+5 more

Serving San Mateo, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"ADT has exceeded my expectations! The system is reliable, the app is easy to use, and the customer service team is always helpful. I appreciate the environmental monitoring features, which go beyond just security. Knowing my home is protected 24/7 is priceless. I highly recommend ADT to anyone looking for a trustworthy security provider."
Home Security Essentials
Smart Home Security
Cameras
Our Team
Home Security Essentials

+35

32 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Secure and Alert Systems, Corp.
Secure and Alert Systems, Corp.
4.5(
103
)
Surveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving San Mateo, CA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I HIGHLY recommend Jon and Dena. Their customer service throughout the process (consultation and installation) was stellar! They are very warm and understanding people who do not try to sell you on extra products. The men (Phil & Josh) that came to install the security system were prompt, professional and nice. They were very knowledgeable and TRUST WORTHY! I never write reviews but for this type of service and care, I had to come leave a comment about my experience with security and alert Corp. Iâ m very happy with the work done and how it was done! Thank you!"
Response time3 days
Response rate99%
10 neighbors recently requested a quote
Avatar for BayArea Electrician
BayArea Electrician
4.9(
50
)
Smart Home System - Install or ServiceSurveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving San Mateo, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"We are so very thrilled to have found Ross with BayArea Electrician! We were initially in contact for a panel upgrade, but had the opportunity to work him him even sooner, owing to an electrical emergency (half of our home went dark due to a fault in our knob & tube-wired home). Ross and team were extremely prompt, super courteous, and quickly re-established power for us at an extremely reasonable price point. The larger project we had planned is currently in progress, and things are going perfectly. It's such a relief to have found an electrician we can trust with projects large and small. Thank you, BayArea Electrician!"
Lights Installation. Art Gallery.
Lights Installation. Art Gallery.
Lights Installation. Art Gallery.
Lights Installation. Art Gallery.
Lights Installation. Art Gallery.

+84

Response time12 hrs
2 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for North Cal Security
North Cal Security
5.0(
4
)
Surveillance Cameras - Install or Repair - For Business

Serving San Mateo, CA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"Dennis and his team were very professional and walked us through the whole process of installation. He gave great product recommendations on products and cameras that were best suited for our home. The quality of the cameras is top-notch. The work was done in a timely manner, and the installation was quick with great results. We absolutely love our home surveillance system and would highly recommend North Cal Security for home or business surveillance installation."
Wesco Warehouse
Response time10 mins
Response rate100%
3 neighbors recently requested a quote
Avatar for Intech
Intech
4.9(
7
)
Smart Home System - Install or ServiceSurveillance Cameras - Install or Repair - For Business

Serving San Mateo, CA and surrounding areas

Approved

In business since 2009

Free estimates

Small jobs welcome

"My pro Sal was very efficient in clearing manifold problems. He was patient in listening when I was trying to explain the problems that I was having. I had made a list and we went through all of the conditions that were giving me grief. After a system reboot something strange having to do with the font occurred. I called Sal and he worked remotely going through changes that had been made. The problem was finally resolved. I was very pleased with Sal's ability to decipher what this layman (laywoman) was trying to say. If I have problems in the future, I will contact Sal."
Hikvision Camera
48" Plasma
Patch Panel
Hikvision Camera
85" LCD

+19

Response time3 hrs
Recommended by85%of homeowners
Avatar for Protect Your Home
Protect Your Home
2.6(
6
)
Alarm or Security System - InstallAlarm or Security System - Monitor

Serving San Mateo, CA and surrounding areas

Approved (Corporate)

In business since 1998

Free estimates

Credit card accepted

Protect Your Home is a leader in the home security industry, providing safety and peace of mind to more than 1.5 million families nationwide. Since we emerged in 1998, we've grown from a company of few to having over 2,000 high performance team members, three locations in Indianapolis, a sales center in Kentucky, and over 128 field branches across the country—and we're still growing. \n \nFor nearly 20 years, Protect Your Home has partnered with ADT®, the #1 name in home security. Today, with our national reach, we are one of ADT's biggest partners and the only partner to be designated as an Authorized Premier Provider. \n \nOur commitment to serving others combined with our projects, events, and culture contribute to the development of our team professionally, personally, and financially. \n \nIt's our mission. It's who we are. It's our legacy. \n

SA and Homeowner
Recommended by100%of homeowners
Avatar for Dream Digital A V Inc.
Dream Digital A V Inc.
5.0(
7
)
Building Automation System - Install or Service - For Business

Serving San Mateo, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Warranties offered

"I cannot give Mark and the Dream Digital AV team enough high praise. My home theater system was experiencing major problems; so I contacted Dream Digital to see if they could help. From the get go, it was obvious that Mark was extremely trustworthy and had my best interests in mind. Before he recommended a relatively costly, in person service call, he took the time to troubleshoot the issue over the phone. We talked multiple times as we tried one recommendation after another so we could get to the root of the problem. Due to his vast experience and knowledge, he was able to figure out what was wrong and help me fix the issue myself. Now he could have chosen not to do this, charging me more or even trying to sell me on upgrading my older stereo components, but he did not. He was just focused on helping me and for that I am extremely grateful. Needless to say, when it does come time to replace or upgrade the systems throughout my home, Dream Digital will be the first place I call."
AI Theater
Response time1 day
Response rate95%
6 neighbors recently requested a quote
Avatar for Northbay Technology Company
Northbay Technology Company
5.0(
2
)
Surveillance Cameras - Install or RepairSmart Home System - Install or ServiceSurveillance Cameras - Install or Repair - For Business+1 more

Serving San Mateo, CA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"This was the third company we contacted after having no follow through with the first two. I explained to Ramiro of Northbay Technology what our problem was. He had a technician here in a few days, he fixed the problem as well as giving us useful feedback on our system. Our streaming and dvd system work after not having it for almost 3 months! Ramiro also called afterwards to make sure everything was still working. What a treat to find a quality company that does what they say they’ll do and also offer great customer service."
37 neighbors recently requested a quote
Recommended by100%of homeowners
Spaghetti Networks, Inc.
New to Angi
Building Automation System - Install or Service - For Business

Serving San Mateo, CA and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

Spaghetti Networks INC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

Response time2 hrs
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Home Security Systems FAQs, answered by experts

Thieves can open almost anything with enough time and the right tools, but they also prefer easy targets that are unlikely to get them caught. Forcing open gates is loud and difficult, and to be able to open one electronically requires extensive knowledge of the system, which most thieves don't have. Electric and other security gates are great deterrents because the thief will move to an easier target. If the thief is determined to enter your property, they will most likely find a different entrance point.

A potential weak link in any security system is poor connection strength or dropped signals, particularly in the case of a fully wireless system. You also want to ensure a reliable connection to get a hold of your service provider quickly. Also, you should exercise caution when handing out sign-in credentials to people outside the household.

Instead of a security door, you might opt for a heavy-duty screen door made from durable mesh, which allows better sunlight and airflow. Additionally, you could enhance security by installing strong locks on your existing door. A double-cylinder deadbolt provides robust security; however, be aware that some local laws prohibit them due to safety concerns during emergencies.

Technically, there isn't a difference between safe rooms and storm shelters. Both are designed to protect you from storms and extreme weather events. People often use “safe room” when discussing a shelter inside a building and storm shelter when talking about a detached unit. 

Additionally, a safe room is understood to have more functions than a storm shelter. You may seek shelter in a safe room when you believe an intruder is in the home or when under another type of threat. 

A home security system can be a worthwhile investment for several reasons. Financially, it may qualify you for a discount of up to 20% on your home insurance premiums, which can help offset the initial setup costs and any ongoing monitoring or subscription fees. For many, the primary benefit is the peace of mind that comes with enhanced security, especially for those living in areas with higher crime rates. Ultimately, whether a system is worth it depends on your personal preferences, the value of the assets you wish to protect, and your overall safety concerns.

The San Mateo, CA homeowners’ guide to home security system services

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