By Michael Turner
“How many cameras do I need?” is one of the most common questions from buyers new to home security. The answer depends on property size, layout, and what you want to cover. Here is a practical framework.
The Minimum Effective Setup
For any property, the minimum effective camera setup covers: (1) the front door or main entrance — ideally a video doorbell, (2) the rear of the property — the most common break-in point. Two cameras covering these positions provide meaningful coverage for a flat, studio, or one-bedroom property. This is achievable for under $150 with a Ring Video Doorbell plus one outdoor camera.
Standard Coverage for a 2–3 Bedroom Home
A typical 2–3 bedroom terraced or semi-detached home benefits from: front door (video doorbell), rear garden or back door (outdoor camera), side passage if accessible (outdoor camera or PIR sensor), and optionally one indoor camera for the main living area. That is 3–4 devices. Budget: $150–$350 depending on camera quality and subscription choices. See our budget guide for under $100 options.
Comprehensive Coverage for a Detached House
A detached property with garage, garden, and multiple entry points benefits from: video doorbell (front), 2 outdoor cameras (rear and driveway), 2 cameras or PIR sensors (side passages), 1 garage camera, and optionally 1–2 indoor cameras. That is 5–7 devices. See our detached house security guide.
Quality Over Quantity
Two well-placed 4K cameras with strong night vision and accurate person detection provide more practical security value than five cheap 720p cameras with no detection. Always prioritise quality and correct placement over maximising the number of devices. A wide-angle camera in a corner position often covers more of a room than two fixed cameras at the same cost. Related: security cameras hub, best outdoor cameras, 4K vs 1080p guide.
