How much does a home security system cost?
A home security system often costs $199 - $900 upfront for a basic equipment package with professional installation. Monitoring commonly adds $25 - $50 per month, though app-only and DIY systems may cost less upfront and rely on optional subscriptions.
Compare total first-year cost, not just the equipment price. Cameras, sensors, storage, monitoring, activation, installation, and contract terms can matter more than the advertised starter kit.
Security system cost components
DIY starter system
$100 - $500+ equipmentHow to tellSmall home, wireless sensors, app setup, no hardwired work
The fixBuy equipment, self-install, choose optional monitoring or storage
Professionally installed alarm package
$199 - $900 upfrontHow to tellDoor/window sensors, motion sensors, keypad, siren, app, and basic setup
The fixInstall and activate equipment, explain monitoring plan
Camera-heavy system
$500 - $2,000+ depending on scopeHow to tellMultiple indoor/outdoor cameras, doorbell camera, storage, or wired runs
The fixMount cameras, connect power/network, configure recording and alerts
Monitoring and storage
$5 - $80+ per month depending on featuresHow to tellProfessional response, cloud clips, cellular backup, or advanced alerts
The fixMonthly subscription or monitoring plan
Before comparing security quotes
- List the doors, first-floor windows, garage doors, and exterior camera locations you want covered.
- Decide whether you need professional monitoring or only phone alerts.
- Ask who owns the equipment if you cancel service.
- Ask about contract length, cancellation fees, cloud storage, cellular backup, and permit requirements.
Unlock the hiring checklist
Use this before you call a home security, so you know what to ask and what to avoid.
Call a pro when…
- You want wired cameras, hidden wiring, or exterior mounting
- You need monitoring, cellular backup, or a professionally designed system
- Wi-Fi coverage is weak near cameras or entry points
- You want sensors, locks, lighting, and cameras integrated cleanly
DIY or professionally installed?
DIY systems are fine when the home is small, wireless coverage is good, and you are comfortable managing batteries, apps, and alerts. Professional installation is more useful when cameras need wiring, the home has many entry points, monitoring matters, or you want one accountable installer for sensors, cameras, locks, and networking.
Need a cleaner scope before you call around?
Use the home security checklist to compare the same work, questions, cleanup, and warranty before choosing a local company.
Related questions
What is the cheapest home security setup?
A DIY wireless kit with a few door/window sensors and app alerts is usually cheapest. The tradeoff is that you handle setup, battery maintenance, alerts, and troubleshooting.
Are monthly monitoring fees required?
Not always. Some systems can self-monitor through an app, but professional monitoring, cloud storage, cellular backup, and advanced alerts often require a monthly plan.
Should I buy cameras or sensors first?
Start with entry-point sensors and basic exterior visibility. Cameras help verify events, but sensors can catch doors and windows opening even when a camera misses movement.
Can an electrician install a security system?
Some electricians and low-voltage installers handle cameras, doorbells, and wiring. Monitored alarm systems may require a specialized security provider depending on the work and local rules.