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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon31
    Verified home security system services reviews

Verified Reviews for Home Security System Service pros in Lagunitas-Forest Knolls, CA

*The Angi rating for Home Security System Service companies in Lagunitas-Forest Knolls, CA 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 Lagunitas-Forest Knolls, CA 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 October 25, 2025

Find Home security system pros in Lagunitas-Forest Knolls

Avatar for ADT

ADT

3750 Priority Way South Dr
4.53(
734
)
•Approved Pro

ADT

3750 Priority Way South Dr
4.53(
734
)
•Approved Pro
Customers say: Terrific value
3672 local quotes requested
151 years of experience

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.

"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."

Luke W on October 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.

"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."

Luke W on October 2025

Avatar for SafeStreets - ADT Authorized Provider

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
291
)
•Approved Pro

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
291
)
•Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
63 local quotes requested

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

"I regret ever choosing SafeStreets. The whole process was frustrating from the start. The technician who came to install the system was late, didn’t answer my questions properly, and left my house a mess. When I reached out to customer service, I was put on hold for over an hour, only to get a half-baked answer. Save yourself the trouble and look elsewhere."

Jessica S on October 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

"I regret ever choosing SafeStreets. The whole process was frustrating from the start. The technician who came to install the system was late, didn’t answer my questions properly, and left my house a mess. When I reached out to customer service, I was put on hold for over an hour, only to get a half-baked answer. Save yourself the trouble and look elsewhere."

Jessica S on October 2025

Avatar for Northbay Technology Company

Northbay Technology Company

P.O. Box 2086
5.00(
2
)
•Approved Pro

Northbay Technology Company

P.O. Box 2086
5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
57 local quotes requested

Northbay Technology Company 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 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."

Pamela K on November 2018

Northbay Technology Company 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 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."

Pamela K on November 2018

Avatar for North Cal Security Inc

North Cal Security Inc

7 Wilms Ave
5.00(
1
)

North Cal Security Inc

7 Wilms Ave
5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

North Cal Security Inc is a company based in South San Francisco CA providing their customers CCTV Camera surveillance, Alarm Panels Systems, intercoms (Multi Dwelling Apartments and Condos), Access (Door) Control Systems, Network and Cabling Services and more! Serving: Daly City, CA; San Francisco, CA; San Mateo, CA; San Carlos, CA; Redwood City, CA Petaluma, CA; San Rafael, CA; Palo Alto, CA; San Jose, CA and all other surrounding Bay Area Cities. Over 30 Years Experience, Family Owned and Operated. Lifetime Camera Warranty Available, No Contracts or Monitoring Fees. Schedule Free Walkthroughs and Quotes. Honest Prices, Honest Service, Professional Work. http://northcalsecurity.com

"Fixed issues from a previous contractor. Very professional and easy to work with. Understood exactly what needed to be done and completed on time."

Evan D on July 2024

North Cal Security Inc is a company based in South San Francisco CA providing their customers CCTV Camera surveillance, Alarm Panels Systems, intercoms (Multi Dwelling Apartments and Condos), Access (Door) Control Systems, Network and Cabling Services and more! Serving: Daly City, CA; San Francisco, CA; San Mateo, CA; San Carlos, CA; Redwood City, CA Petaluma, CA; San Rafael, CA; Palo Alto, CA; San Jose, CA and all other surrounding Bay Area Cities. Over 30 Years Experience, Family Owned and Operated. Lifetime Camera Warranty Available, No Contracts or Monitoring Fees. Schedule Free Walkthroughs and Quotes. Honest Prices, Honest Service, Professional Work. http://northcalsecurity.com

"Fixed issues from a previous contractor. Very professional and easy to work with. Understood exactly what needed to be done and completed on time."

Evan D on July 2024

Avatar for Cove

Cove

14015 S Minuteman Dr
5.00(
2
)

Cove

14015 S Minuteman Dr
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We provide quality burglar, fire, and life home security systems that are affordable, intuitive, and so easy to install you can do it yourself! With our unprecedented technology, you trade technicians for easy-to-use tech that lets you install it in minutes without tools.

"They were excellent to work with and very professional. The system was very easy to install and I was able to do it on my own in under 45 minutes!"

Mark M on July 2018

We provide quality burglar, fire, and life home security systems that are affordable, intuitive, and so easy to install you can do it yourself! With our unprecedented technology, you trade technicians for easy-to-use tech that lets you install it in minutes without tools.

"They were excellent to work with and very professional. The system was very easy to install and I was able to do it on my own in under 45 minutes!"

Mark M on July 2018

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Home Security Systems questions, answered by experts

Regular testing, keeping sensors clean, and updating software help ensure optimal performance.

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.

The most secure lock for a front door is typically a deadbolt. There are many types of deadbolts to choose from, the most basic of which is the standard single-cylinder deadbolt. This is the lock you find installed on most front doors. For added security, you could go with a double-cylinder deadbolt, which requires a key to operate the lock from both the outside and the inside. 

The main difference between different security sensor options is the type of motion each detects. A motion detector monitors obvious movements in hallways, entrances, and exits. On the other hand, a presence detector is more sensitive and captures smaller moves. A window sensor typically focuses on the opening and closing of the window, whereas a glass break sensor alarms you when a glass is broken.

The cost of a home security system depends on the kinds of devices you install, but the average cost is about $750. Fully monitored systems with hardwired alarms, cameras, motion detectors, and lights will cost a lot more—up to $2,000. Meanwhile, a few wireless cameras that deliver video to an app will be significantly less expensive, starting at as little as $200.

The Lagunitas-Forest Knolls, 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.

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