Home security systems — DIY vs monitored and what you're paying for
This article is for educational purposes only and is not a substitute for professional advice. Local codes, regulations, and best practices vary by region.
A security system sends an alert when doors or windows open. A monitored system sends those alerts to a 24/7 monitoring center that dispatches police if needed. A DIY system sends alerts to your phone and relies on you to respond. The question is whether professional monitoring is worth the monthly fee.
For most homeowners, a DIY system is sufficient if you’re home frequently and aware of who’s entering. For people who travel, work during the day, or want police dispatch without personal response, professional monitoring is valuable.
DIY Systems
DIY systems (wireless sensors on doors and windows, motion detectors, a central hub) monitor your property and send notifications to your phone. Installation is simple: mount sensors on doors and windows, add motion detectors, and configure the app. Cost is $200 to $800 for equipment. No monthly monitoring fee.
Upside is flexibility and no monthly expense. You can adjust settings, add sensors, and change monitoring as needed. The system works as long as you have internet connection.
Downside is you’re responsible for response. If an alarm triggers at 2 a.m. and you’re asleep, you have to wake up, check cameras, and call police if needed. False alarms go nowhere. If you’re away, response is delayed.
Typical DIY systems: motion sensors, door/window sensors, glass-break sensors, a main hub, and smartphone integration. Cost runs $300 to $1000 installed depending on number of sensors.
Professionally Monitored Systems
A monitored system costs $40 to $80 monthly for monitoring plus equipment costs of $800 to $2000 installed. The monitoring center receives alarm signals 24/7 and dispatches police immediately.
This is valuable if you’re away during the day, travel regularly, or want assurance that help will be called automatically.
Downside is the monthly cost adds up. After 5 years, you’ve paid $2400 to $4800 in monitoring fees alone. False alarms might incur charges from police. Some insurance companies require monitored systems, which is an upside if your insurance savings offset monitoring costs.
System Components
Door/window sensors detect openings. Motion detectors sense movement. Both are wireless in modern systems. A keypad or phone app arms and disarms the system.
Glass-break sensors detect breaking glass. Useful for ground-floor windows or sliding doors.
Cameras integrate with some systems, providing video verification if an alarm triggers.
The hub connects sensors via WiFi or cellular and communicates with the monitoring center (if monitored).
Installation and Setup
Professional installation costs $400 to $1000 labor. They place sensors optimally and configure the system. DIY installation is free but requires you to figure out placement and settings.
If you have no electronics experience, professional installation is worth the cost. If you’re comfortable with apps and home technology, DIY is manageable.
Most DIY systems walk you through setup with decent instructions. Installation takes 1 to 2 hours typically.
Cost Analysis
A DIY system costs $300 to $1000 upfront, no monthly fees. Total 5-year cost is the upfront cost only.
A monitored system costs $1000 to $2500 upfront plus $40 to $80 monthly. That’s $3400 to $7300 for 5 years.
The break-even scenario: if your insurance company offers a discount for monitored systems that saves you more than $40 to $80 monthly, professionally monitored makes financial sense.
Reliability Concerns
DIY systems depend on WiFi and internet. If your internet goes down, the system still works locally (sensors work), but you won’t get notifications and no monitoring center gets notified (if monitored).
Monitored systems with cellular backup still call police during internet outages. Cellular backup adds cost but ensures monitoring continues.
False alarms are common when you first install a system. Windows rattling in wind, pets triggering motion sensors, forgetting to disarm before opening a door. This gets better as you learn the system, but false alarm fees might apply to monitored systems.
Making the Decision
If you work from home or are home frequently, a DIY system provides adequate security with no monthly expense. If an alarm triggers, you can verify and respond.
If you work during the day and your home is unoccupied, professional monitoring is worth it. Police dispatch without personal verification provides genuine security.
If you travel regularly or have high-value items, monitored systems provide peace of mind.
Start with basics. A few door/window sensors and a main hub are affordable. Expand as needed. You don’t need every feature to have functional security.
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