Signs an installer is overselling zones you don't need

Most homeowners end up paying for alarm zones they'll never use, often before they realise what's happened. An installer pitching a 16-zone system for a three-bedroom house, or recommending motion sensors in every room when you only care about entry points, is almost always selling to commission rather than to your actual risk. The trap is that zones sound technical and necessary, so you nod along—then six months later you're managing a system far more complex than it needs to be, with a monitoring bill that reflects the bloat.

When the pitch outpaces your layout

A zone is essentially a monitored area or entry point: a door, a window, a motion detector, a pressure mat. Your installer's job is to identify what you genuinely need to protect and size the system accordingly. Instead, many will sketch a "complete" installation that treats every possible vulnerability as equally urgent. They'll propose perimeter sensors on doors and windows you rarely use, motion detection in hallways and kitchens, and glass-break sensors that duplicate door zone coverage. The red flag is when the proposal doesn't match your stated concern—if you've said you mainly worry about break-ins at night while you sleep, and they're insisting on motion zones throughout the house, they're solving a problem you didn't ask them to solve.

Ask the installer to walk you through *why* each zone is there. If they can't tie it back to an actual entry point, a high-risk area, or a behaviour pattern that matters to you, push back. Request a scaled-down quote that covers your perimeter (doors and key windows) plus monitored entry to your bedroom at night. See how their pricing moves. If they resist simplification or warn that you're taking an unacceptable risk without those extra zones, be wary—they may be anchoring you to a premium package.

The monitoring bill creep

Zones directly affect your monthly monitoring cost. More zones mean higher fees. An installer who front-loads your system with unnecessary coverage knows you'll inherit a recurring charge that's hard to renegotiate once the contract is signed. You'll notice this most when you get your first monitoring invoice: it's higher than expected, itemised per zone, and backing it out now means paying a technician to remove sensors you never wanted in the first place.

Before signing a monitoring contract, ask for the cost breakdown—specifically, what the base fee is and what you're charged per zone. Compare that to a minimalist quote (perimeter only, for example). The difference should be modest for a few extra zones; if it's substantial, you're funding someone else's oversell. Also check: is the installer bundling proprietary monitoring, or offering you choice? Bundled monitoring locks you in and limits your ability to shop around if costs spiral.

The complexity trap

More zones mean more wiring, more sensors to replace when batteries fail, and a system that's harder to troubleshoot. If you lose power or have a connectivity glitch, each extra zone is another potential false alarm—and the more false alarms you generate, the more sceptical your armed response provider becomes, and the slower they attend. A bloated system also makes it easier to accidentally leave a zone disarmed, creating a genuine gap in coverage. You'll spend energy managing something that was supposed to reduce your anxiety, not add to it.

When you're reviewing the quote, ask how many zones are *armed* each night. If the answer is "all of them" and you don't actively use half the rooms, that's a design flaw, not a feature. A well-scoped system lets you arm only what matters—perimeter and bedroom, for instance—and keeps the rest dormant.

Verifying the proposal against your risk

The safest way to spot oversell is to sketch your own risk map before the installer arrives. Mark which doors and windows face public areas or are ground-level. Note which rooms you occupy at night. Flag any entry points you've previously been concerned about. When the installer's proposal comes back, lay it against your sketch. Every zone should map to something on your map. If the proposal includes zones for rooms you don't use or entry points you never worried about, ask directly: "Why do I need this?" Listen for answers rooted in general advice ("you should protect everything") versus your specific property and behaviour.

A reputable installer will size the system to your risk, not to their margin. If you're uncertain, get a second quote from another PSIRA-registered provider and compare the zone count and reasoning, not just the price. Strove lets you request quotes from multiple vetted installers; that comparison often exposes when one is over-specifying.