What does an alarm system for a single-family home cost? An honest overview

One of the most common questions in our first conversation is: “What is this actually going to cost us?” The honest answer: a solid alarm system for an average single-family home is between €2,500 and €6,000. The range looks wide — but the spread has good reasons. In this article we show which factors drive the price, where saving makes sense, and where it does not.

What a serious system typically costs

A wireless intruder detection system for a single-family home with 4–5 rooms typically consists of:

• Control panel with app integration, battery backup and SIM fallback (around €400–800)
• 6–10 door/window contacts on exposed openings (€30–60 each)
• 2–3 motion detectors in central areas (€50–120 each)
• 1 indoor siren + 1 outdoor siren (together around €200–400)
• Installation, configuration and handover (around €800–1,500)
• Optional: monitoring centre connection (one-off around €200, monthly around €25–50)

Total, depending on manufacturer and scope: €2,500 to €4,500 as an entry point, with monitoring and more components realistically up to €6,000.

Why the price range is so wide

Three factors make the difference:

1. Component quality. A wireless system from a hardware store costs €600 but fails to meet insurer requirements in practice — and in case of doubt it does not even report. A VdS-compliant system starts at €1,500–2,500 just for the panel and sensors, but actually protects.

2. Perimeter vs. interior detection. A cheap solution detects the intruder once they are in the living room. The smart approach is to detect them at the window. That requires more sensors — but it also costs more.

3. Monitoring and service. A system without monitoring just sirens. Who responds? The neighbours? More likely: nobody. Connection to a certified monitoring centre costs monthly fees — but ensures that a security service actually shows up.

Where you should not save

• On battery backup: systems without sufficient battery go blind during a power outage.
• On SIM fallback: if the internet is down, the system still has to report.
• On installation: a self-installed system saves €1,000 — and produces false alarms because sensors are placed wrong. Your insurance usually does not pay either.

Where you can save

• On construction chaos: wireless systems avoid wall chiselling and painting.
• On “extras” you do not use: smoke detection components, for example, only make sense if you have no smoke alarms.
• On size: we often see oversized systems. Ten motion detectors are rarely better than four well-placed ones.

How to get to a reliable price

We offer a free initial consultation. We come to your home, look at the property, ask about your protection needs — and within a week we deliver a concrete fixed-price offer with a transparent component list. No flat-rate packages, no surprises.

Book your initial consultation here.