When people start pricing out home cameras, the first question is almost always "how many do I need?" The camera kits do not help: they come in packs of four, eight, or sixteen, which quietly suggests that more is the answer. After years of installing these systems, our honest answer for a typical detached home is three to five. Not sixteen. Here is the reasoning.
Coverage beats count
A camera system is not measured in cameras. It is measured in questions it can answer: who came to the door, what happened to the car, how did someone get into the backyard. Every camera should exist to answer one of those questions well.
The priority list for most houses looks like this. First, the front door, because that is where deliveries, visitors, and most unwanted attention arrive. Second, the driveway and vehicles. Third, the main rear entry, since back doors and patio sliders are the preferred way in for anyone who does not want to be seen from the street. Fourth, any side passage or gate that lets someone move from front to back out of view.
Notice that this list is about entry points and approaches, not about blanketing every square metre of the property. A camera watching the middle of an empty lawn records a lot of grass.
Get placement right and a small number of cameras does the work. We went deep on mounting height, angles, and lighting in our camera placement guide, and everything there applies before you buy a single extra unit.
The typical 3 to 5, by house
A bungalow on a standard lot usually lands at three: doorbell or front-door camera, driveway, rear yard covering the back entry. That covers every way a person approaches the house.
A two-storey on a corner lot, or a house with a detached garage, tends to land at four or five: the same three, plus the side exposure or the garage and the path to it. Rural properties around here often add one more for a long driveway or an outbuilding.
Interior cameras are a separate conversation. Most families end up not wanting always-on cameras inside their living space, and we understand why. Where interior cameras do earn a place: covering the main entry hallway (so anyone who gets in is recorded regardless of which door they used), or a specific need like a workshop or a rental suite entrance.
Where diminishing returns kick in
The first three cameras answer most questions a homeowner will ever ask their system. The sixth, seventh, and eighth mostly generate motion alerts about squirrels.
More cameras also cost more than the sticker price suggests. Each one is a cable run, a spot on your recorder, storage consumed around the clock, and one more feed nobody reviews. Alert fatigue is real: a system that pings your phone forty times a day gets muted within a month, and a muted system protects nothing.
There is a privacy cost too. Cameras that stare into a neighbour's yard or windows cause friction and, in some cases, legal trouble. Tight, purposeful coverage avoids the problem entirely.
Our rule on upgrades: before adding camera number six, ask which question it answers that the existing five cannot. If the answer is "just in case," spend the money on better cameras in the key positions instead. One good camera with a clear view of a face at the front door is worth three mediocre ones pointed at rooflines.
Quality in the right spots
If the budget is fixed, put it into the positions that identify people, not the positions that merely detect them. The front door camera should capture a recognizable face in bad light. The driveway camera should read enough detail to describe a vehicle. Overview cameras covering the yard can be more modest.
Doorbell cameras deserve a mention here: for many homes they are the single highest-value device, and we compared them against dedicated cameras in an earlier post. A doorbell plus two or three well-placed exterior cameras is a complete system for a lot of households.
And whatever the count, record locally where you can, keep the recorder somewhere a burglar will not find it in ten seconds, and check once a season that everything is actually recording. A camera that failed quietly in November is discovered at the worst possible moment.
Start with the walk-around
The way to find your number is not a spec sheet. It is a slow lap of your property, thinking like someone who wants to get in without being seen. Every approach that lap reveals is a camera position. For most houses, that lap produces three to five positions, and that is your system.
If you would rather do that lap with someone who has done a few hundred of them, we design and install camera systems across Norfolk County and the surrounding area, sized to the property instead of the box the kit came in. Book a site visit and we will tell you honestly if three is enough.
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