Comparison of Home Security Systems: DIY vs Professional Monitoring

DIY home security alerts your phone and leaves the call to you; professional monitoring routes alarms to a staffed center that can verify the event and dispatch police, fire, or medical help.

Both models use the same sensors and the same siren. The difference is who acts when the siren goes off, and how much you pay every month for that decision to be out of your hands.

Here’s what the two models actually do, what they cost today, and which one fits which household.

How The Two Monitoring Models Actually Work

Self-monitoring turns your phone into the alarm panel; professional monitoring turns a third-party call center into it.

In a self-monitored setup, motion and entry sensors trigger push alerts through the brand’s app. You look at the notification, decide whether it’s the cat or a break-in, and call 911 yourself if it’s real. Nobody else is watching. If your phone is on silent, in another room, or dead, the alarm fired and nothing happened.

Professional monitoring changes the back half of that chain. When a sensor trips, the system sends a signal to a monitoring center staffed around the clock. An operator follows a verification workflow — checking cameras, calling your phone, sometimes using two-way audio — then contacts the local police, fire, or medical dispatcher if the event looks genuine. You don’t have to be reachable for the dispatch to happen.

Some DIY brands, SimpliSafe included, let you buy the equipment once and then choose either model month by month. Traditional security companies usually bundle installation and 24/7 monitoring into one contract instead.

What Each Model Costs In The US

Self-monitoring typically runs $0–$20 per month, while professionally monitored plans generally land between $20 and $60 per month depending on the tier.

SimpliSafe’s current US residential lineup is a clear example of how tiers stack:

SimpliSafe’s own support pages list these prices and note that plans are paid monthly with no contracts or hidden fees. One thing worth flagging: camera recording is not included at every tier. The cheapest monitored plans cover the alarm signal but not video, so if you want clips to review after an event, that’s a separate line item.

These quoted prices apply to the US residential market. SimpliSafe also publishes separate UK plan pricing and a distinct business monitoring lineup, so anyone comparing across regions is looking at different numbers.

If you’re weighing hardware before you pick a plan, our tested roundup of the 10 best home security systems covers the equipment side in detail.

Which Model Fits Your Household?

Self-monitoring suits people who are home often and reachable; professional monitoring suits anyone who might not be.

• Choose self-monitoring if you’re budget-conscious, you work from home or have a partner home during the day, and you’ll actually act on an alert within a minute or two.
• Choose professional monitoring if you travel, live alone, have kids or elderly family members in the house, or you simply know you sleep through notifications.
• Choose professional monitoring with video if you want recorded evidence, not just a dispatch call — that requires a tier like SimpliSafe’s Core or higher.

The uncomfortable caveat with self-monitoring is the assumption buried inside it: that you’ll be available every single time. Alerts fire while you’re in a movie theater, on a flight, or asleep with your phone face-down. That gap is exactly what the monthly fee buys you — a second set of eyes that never sleeps.

Treat that as a general market observation rather than a guarantee; actual timing depends on each center’s verification workflow and how quickly they reach you for confirmation.

Two mistakes show up constantly in this comparison. First, assuming self-monitoring includes automatic emergency dispatch — it doesn’t, you make that call. Second, assuming every monitored plan includes camera recording. SimpliSafe’s cheapest monitored tier doesn’t, and other brands split their tiers the same way.