How to check an installer designs for coverage, not just camera count

You've just received a quote for a new CCTV system. The installer has listed eight cameras—four at the front, two at the back, two inside. It sounds thorough. Six months later, a break-in happens at night, and when you pull the footage, half your property is a dark blur. The cameras are there, but they're not actually watching what matters. This is the most common failure: installers optimise for camera count instead of coverage, and you don't discover the gap until you need the footage.

Coverage design is the difference between a system that documents what happened and one that merely records the fact that something happened somewhere. A properly designed layout accounts for lighting conditions, sight lines, entry points, blind spots, and image quality at distance. A poorly designed one counts cameras like they're decorative.

What goes wrong when design takes a back seat

The cheapest quote often wins because it's easy to compare numbers. "Eight cameras" sounds identical across three quotes, so price becomes the tiebreaker. But eight cameras in a haphazard layout—angled from the same vantage point, placed too high, too far from entry zones—will miss critical moments. A burglar knows how cameras work and will exploit gaps. An installer focused on cost-cutting does the same, accidentally or by design.

Another failure mode is over-reliance on zoom. A camera positioned 20 metres from an entry point can theoretically see detail if you zoom in, but in low light or rain, zoom amplifies blur. Night-time footage becomes useless. An installer might say "the camera covers that area," but coverage at midnight is different from coverage at noon.

Indoor-outdoor mismatches also trap owners. A camera rated for outdoor weather might be mounted where reflected glare from windows washes out the image. An interior camera might be pointed at a bright doorway, silhouetting anyone coming in. The installer installed the cameras; the design failed.

Third is the blind-spot creep. A designer might account for the front entrance, driveway, and perimeter, but miss the side pathway where packages get left, or the quiet corner where someone can approach without being seen. These gaps don't show up in a list of camera locations—only in the footage when you need it.

How to spot a design-focused installer

A proper quote includes a site plan or diagram showing each camera's field of view, not just its location. Ask the installer to draw or show you where each camera actually sees. If they can't or won't, they haven't done the design work. A competent installer will visit your site and discuss traffic patterns, lighting, entry points, and what you want to protect. They'll ask "What's the worst-case scenario?" and design around it.

Push back on camera count. Ask why each camera is necessary and what specific area it protects. If two cameras would cover the same zone, you don't need both. If a camera is placed to monitor a redundant angle just to hit a price point, challenge it.

Test the design before installation. Ask the installer to simulate sight lines using a temporary camera or even a smartphone app that shows field of view. Walk your property at dusk and night—your perception of "visibility" changes with light. A designer should anticipate this.

Ask about backup if a camera fails. A well-designed system doesn't rely on any single camera; if one goes down, the other angles still cover critical zones. If losing one camera creates a security black hole, the design is fragile.

Finally, insist on a walkthrough after installation. Have the installer show you the live feed from each camera on your monitor and confirm that what you see matches what was promised. Night vision, zoom range, colour at distance—verify it before you sign off.

When you're sourcing an installer, the question isn't how many cameras you're getting. It's whether the ones you get actually see what matters. A verified installer on Strove will have a portfolio of designs and customer reviews that show whether their systems deliver useful footage when it counts.