Circuit & Chime

How Much Does a Home Security System Cost?

The honest total: not just the kit price, but hardware plus monitoring added up over five years — so you can see what DIY self-monitoring really saves against a professional plan.

By Stephen V.Last updated How we test

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Ask “how much does a home security system cost?” and the honest answer is a question back: over how long?Because the kit price you see advertised is usually the small part. The number that decides whether a system is cheap or expensive is the monthly monitoring fee, added up across the years you own it — and that’s the number brands are quietest about.

The two costs that make up the total

Every security system has an upfront hardware cost— the base station, keypad, sensors and any cameras — and an optional recurring monitoring cost. The hardware is a one-time spend. The monitoring is where the money really goes over time, and whether you pay it at all is a genuine choice on every DIY system worth buying.

Self-monitored vs professionally monitored, over five years

Here’s the same DIY system, run two ways. The figures are illustrative examples to show the shape of the decision; actual hardware and plan prices vary by brand and change over time, so confirm current pricing before you buy.

Illustrative five-year cost of ownership — example figures, not live prices. Hardware and monitoring prices vary by brand; confirm current pricing.
CostDIY self-monitoredProfessionally monitored
Upfront hardware (starter kit)~$150-300~$150-300
Monthly monitoring$0~$20-50/mo
Monitoring over 5 years$0~$1,200-3,000
Approx. five-year total~$150-300~$1,350-3,300

That’s the whole argument on one line: the hardware costs about the same either way, and the monitoring plan can multiply your five-year total several times over.For many households, free self-monitoring — where your phone gets the alert and you decide what to do — is genuinely enough, and it keeps that multiplier at zero.

What the monitoring fee actually buys

It’s a real service, not just a markup. Professional monitoring means a staffed centerthat answers the alarm when it trips and can contact police or fire on your behalf — the thing that matters most when you’re asleep, on a plane, or otherwise unable to react to a phone alert. If you go this route, look for a center that meets the UL 827 standard for alarm monitoring. What you’re weighing is convenience and guaranteed response against cost: self-monitoring puts you in the loop for free; professional monitoring puts a staffed team in the loop for a monthly fee.

Where the professionally installed systems fit

At the top of the market sit fully installed, contract-based services like Vivint, where a technician fits everything and monitoring is bundled in. They’re the most hands-off option and the most expensive over time, usually with the hardware financed over a multi-year term — the opposite of the buy-once approach. If that’s the trade you want, our Vivint review lays it out; for most readers, though, a DIY system is the smarter spend.

The bottom line

Budget for the five-yeartotal, not the kit price. If keeping cost down is your priority, a DIY system you self-monitor is by far the cheapest way to a real alarm, and a visible, self-monitored setup — a sign, a sensor on every entry, a siren, and instant phone alerts — is a reasonable first layer for most homes. Start with our no-subscription systems, and if you want the running cost of the rest of a smart home too, see what a smart home costs to run.

General guidance, not professional security advice. Circuit & Chime is written by a smart-home enthusiast, not a licensed installer or security professional. For a home with specific risks, or for life-safety devices like smoke and CO alarms, follow the manufacturer’s instructions and, where it matters, a qualified installer.

Frequently asked questions

How much does a home security system cost?

Two very different numbers. A DIY self-monitored system is a one-time hardware cost — often roughly $150–$300 for a starter kit — with no monthly fee. A professionally monitored system adds a monitoring plan on top, and over five years the monitoring usually costs far more than the hardware did. The upfront kit is the small part; the monthly fee is what decides the total.

Is DIY or professional monitoring cheaper?

DIY self-monitoring is dramatically cheaper over time because there's no recurring fee — your phone is the alarm. Professional monitoring adds a monthly cost for a staffed center that answers the alarm for you. Over five years the difference is typically well over a thousand dollars. What you're paying for with monitoring is someone watching when you can't.

Do you have to pay monthly for a home security system?

No. DIY systems like SimpliSafe, Ring Alarm, eufy and Abode all let you self-monitor for free: install the sensors and your phone gets instant alerts. A monthly plan is optional and adds professional dispatch. The alarm itself works with no recurring fee.

Is professional monitoring worth the cost?

It depends on your situation. Professional monitoring buys a 24/7 staffed center that can call police or fire when you're asleep or away — valuable if you travel often or want guaranteed response. If you're comfortable reacting to phone alerts yourself, free self-monitoring covers most households' needs at a fraction of the five-year cost.

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