Home security pricing is deliberately hard to compare. Equipment is financed into monthly payments, promotions obscure the base price, and the number that actually matters — what you will have paid by the time you stop — is rarely quoted.
This page fixes that. Figures were verified in 2026-09-07 and are expressed as ranges, because vendors change pricing frequently. Use them to sanity-check a quote, not as a price list.
The four costs, separated
Every security system has the same four cost components. Vendors bundle them differently, which is what makes comparison hard.
| Component | Typical range | Recurring? | Notes |
|---|---|---|---|
| Equipment | $200–$2,000+ | One-off (or financed) | Often financed into the monthly figure |
| Installation | $0–$1,500 | One-off | Free with DIY; often promotionally discounted |
| Monitoring | $0–$70/mo | Monthly | The number that compounds |
| Video storage | $0–$25/mo | Monthly | Sometimes bundled with monitoring |
The trap is that a “$35 a month” system and a “$20 a month” system may have wildly different equipment and contract structures behind them. Always resolve the four components separately.
What each tier costs over three years
This is the comparison that matters.
| Tier | Upfront | Monthly | Three-year total |
|---|---|---|---|
| Self-monitored DIY SimpliSafe or Ring kit, no plan | $250–$500 | $0 | $250–$500 |
| Local-storage cameras only Eufy, 3–4 cameras | $450–$900 | $0 | $450–$900 |
| DIY + professional monitoring SimpliSafe, Ring, Cove, Abode | $250–$600 | $18–$32 | $900–$1,750 |
| Professionally installed ADT | $0–$600 (financed) | $35–$70 | $2,000–$3,200 |
| Fully integrated Vivint | $0–$1,000 (financed) | $50–$100 | $3,000–$4,500 |
The fees nobody mentions
These appear after the sale, and they are the most common source of complaints.
Early termination fees. On a 36-month contract, cancelling typically costs a substantial percentage of the remaining balance. On a $45/month plan cancelled at month 14, that can exceed $700. Ask for the formula in writing.
Equipment financing. “No upfront cost” usually means the equipment is financed. You owe that balance whether or not you keep the monitoring.
False alarm fines. Many municipalities charge for police dispatch to false alarms — commonly $50–$150 after the first one or two, and escalating. Some require alarm permits with an annual fee. Check your local rules; this catches people out every year.
Activation and reactivation fees. Typically $50–$200, often waived promotionally, sometimes reapplied if service lapses.
Price increases. Monitoring rates commonly rise after a promotional period. Ask what the rate becomes after year one.
Moving fees. Relocating a professionally installed system often costs several hundred dollars and may extend your agreement.
Where the money is genuinely well spent
Not everything expensive is a waste. Three things reliably justify their cost.
Cellular backup. A system that communicates only over your broadband is defeated by unplugging the router. Cellular backup is usually a few dollars a month and closes that hole entirely. Do not skip it.
Monitored smoke and CO detection. Statistically far more likely to prevent serious loss than burglary detection, and rarely the reason people buy. If you are paying for monitoring anyway, include it.
Professional installation for wired work. Cameras through finished walls, external penetrations, mains-powered devices. Paying someone competent is cheaper than water ingress or a failed inspection.
Where to save without regret
Skip the top camera tier unless you actually need to identify faces at distance. 2K is enough for almost every residential purpose, and 4K costs battery, bandwidth and usually a higher subscription.
Buy fewer sensors than proposed. Quotes often include sensors on second-floor windows that would need a ladder. Cover realistic entry points, not every opening.
Consider local storage. Over five years, camera subscriptions frequently exceed hardware cost. Local-storage systems remove that entirely.
Self-monitor if you are genuinely reachable. For a flat with neighbours close by, professional dispatch adds less than it does for an isolated house.
Buy equipment outright where possible. Owning it keeps you free to change monitoring providers.
Does insurance offset the cost?
Often, partially. Discounts for monitored security commonly run 5–20% of the premium, and monitored smoke and water detection sometimes attracts a separate reduction.
Two things to check before assuming:
- Most insurers require professional monitoring, not merely professional installation. A DIY system with a monitoring plan usually qualifies; an unmonitored one usually does not.
- You will need a certificate from the monitoring company. Ask your insurer what documentation they accept before you buy.
On a $1,500 annual premium, a 10% discount is $150 a year — which covers a meaningful share of a $20/month monitoring plan. Worth a phone call.
Frequently asked questions
How much does a home security system cost per month?
Monitoring runs roughly $18–$32 for DIY systems and $35–$70 for professionally installed ones. Self-monitored systems cost nothing monthly.
What is the cheapest home security system?
A self-monitored DIY kit at $250–$500 with no recurring cost. For monitored security, Cove and Wyze Home Monitoring are cheapest at roughly $10–$20 a month.
Is professional installation worth the cost?
For wired cameras, large homes, or retrofits into existing wiring, yes. For a typical home with adhesive sensors, DIY installation takes about an hour and saves several hundred pounds.
Are there hidden fees with home security?
Commonly: early termination fees, equipment financing balances, false alarm fines from your municipality, activation fees, post-promotion price rises and relocation charges. Ask about each in writing.
Does home security reduce insurance premiums?
Frequently, by 5–20%. Most insurers require professional monitoring and a certificate from the monitoring company. Confirm requirements with your insurer first.