A practical guide to working out the right number of cameras for your property — without guessing, and without buying three you’ll never look at.
It’s the first question almost everyone asks, and the honest answer is that "how many" is the wrong question to start with.
Camera count is an output, not an input. Two houses on the same street can need wildly different systems — a corner block with three street-facing sides and a side gate needs more coverage than a mid-block townhouse with one way in. What actually determines your number is how many separate approaches lead to your home, and how many of them you can see from one position.
This guide gives you a method for working that out in about fifteen minutes, a starting recommendation by property type, and a clear picture of where people typically over-buy and under-buy.
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The short answer • Most Australian family homes are well covered by 4 to 6 cameras. • Apartments and units usually need 1 to 2. Large or unusually shaped properties may need 8 or more. • Start with four coverage roles — front entry, rear entry, side access, and driveway or street frontage. Almost every home needs these before it needs anything else. • Buy a recorder with more channels than you need today. Adding a camera later is easy; replacing an undersized recorder is not. |
Start with how people actually get in
Before you count cameras, it helps to know what you’re covering. Australian crime data points consistently in one direction: intruders use doors far more often than anything else, and a large share of entries involve no force at all.
• Crime Statistics Agency Victoria found doors were the most common entry point for residential burglaries at around 41%, ahead of windows at around 17% (year ending December 2018).
• Australian Institute of Criminology research in Western Australia found roughly two-thirds of surveyed detainees typically entered through unlocked doors or windows rather than forcing entry.
Two things follow from that. First, cameras belong at doors and access paths, not scattered decoratively around the roofline. Second, most incidents are opportunistic — which is why a visible camera at the point of approach does more work than a hidden one recording the aftermath.
The Core Four: coverage roles every home should fill first
Rather than thinking in numbers, think in roles. Fill these four before you add anything else.
1. Front entry
Your front door is the most-used approach to your home and the single most likely point of contact with anyone — delivery driver, visitor, or someone testing whether you’re home. This is your identification camera: the subject is two to four metres away, which means even a modest resolution will capture a clear face.
A doorbell camera can fill this role, though a dedicated camera positioned to see the approach path as well as the doorstep is stronger.
2. Rear entry
The back door, sliding door or rear courtyard access is where people go once they’re past the fence — precisely because nobody on the street can see it. In most Australian homes this is the highest-risk unwatched point, and it’s the camera position most often skipped.
3. Side access
The side gate or path connecting front to back is the route between your most visible area and your least visible one. One camera here covers the transition and often catches the same person twice, from two angles, which is exactly what you want in evidence.
4. Driveway or street frontage
Vehicles, deliveries, the approach to your property, and any activity at the boundary. This camera does the most deterrence work because it’s the one visible from the street — and it captures the widest view, which is where extra resolution genuinely pays off.
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Why four is the practical floor Fewer than four almost always leaves an entire side of the house unwatched, and intruders are looking for exactly that. Four also happens to match the most common entry-level recorder size, which keeps the cost step sensible. If budget only stretches to two right now, do front entry and rear entry. Those two cover the majority of real-world approaches. |
Cameras five and beyond: when you actually need more
Once the Core Four are covered, additional cameras should each answer a specific question. If you can’t say what a camera is for, you don’t need it yet.
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Add a camera for… |
When it makes sense |
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A second side access |
Your block has paths down both sides — very common on freestanding homes |
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Garage or shed |
You store tools, bikes, a second vehicle or anything portable and valuable |
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Rear yard wide view |
Large backyard where the rear-door camera only covers the immediate area |
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Upper storey or balcony |
Accessible from a fence, carport roof, pergola or neighbouring structure |
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Granny flat or studio |
Separate dwelling with its own entry and its own approach |
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Pool gate or outbuilding |
Safety monitoring as much as security — a genuinely common reason |
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Internal entry point |
Hallway or living area facing the main internal door, for after-entry evidence |
One camera per approach, not one per wall. This is the rule that keeps counts sensible. If two doors sit on the same side and share an approach path, one well-positioned camera often covers both. If a single wall has two genuinely separate approaches, it needs two.
Starting point by property type
Use this as a first estimate, then adjust using the walk-through in the next section.
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Property type |
Typical range |
Priority positions |
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Apartment or unit |
1–2 |
Front door; balcony if ground floor or accessible |
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Townhouse |
2–4 |
Front entry, rear courtyard, garage |
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Single-storey house, mid-block |
4–5 |
Core Four, plus second side access |
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Double-storey house |
5–6 |
Core Four, plus rear yard wide and any accessible upper access |
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Corner block |
6–7 |
Core Four, plus both street frontages and the second side gate |
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Home with granny flat |
6–8 |
Core Four for the main dwelling, plus separate entry and approach |
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Rural or acreage |
8+ |
Front gate, driveway approach, house perimeter, sheds, machinery |
Corner blocks catch people out. Two street frontages means two approach directions, two boundary lines and usually two gates — which is why the count jumps even though the house may be no bigger.
The fifteen-minute walk-through
This is the part worth doing properly. It will tell you more than any online calculator, and it takes one walk around your own property.
1. Approach your own home. Walk out to the footpath and approach your home the way a stranger would. Then do it again from the driveway, and again from any side path or laneway. Every distinct route you just walked is an approach that needs covering.
2. List every way in. Write down every door, gate, sliding door and ground-floor window a person could realistically reach. Include the garage side door, the shed, and the gate everyone forgets about.
3. Find the blind spots. Look for anywhere someone could stand for thirty seconds without being seen from the street or from inside. Dense shrubs, a recessed side path, behind a carport, the back of the shed. These are the spots that need coverage most.
4. Pick one position per approach. For each approach, find one mounting position around 2.5 to 3 metres high that sees the whole path, not just the endpoint. Cameras looking along a path capture faces; cameras looking straight down capture the tops of heads.
5. Check for overlaps. If two approaches converge, one camera at the convergence point may cover both. This is where counts usually drop by one or two.
6. Count the positions, not the walls. Now count your positions. That’s your number — grounded in your actual property rather than a generic recommendation.
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Do this at night too Walk the same routes after dark and note where existing lighting falls. Approaches that look obvious at 2pm can be completely black at 9pm. A position with some ambient light will produce dramatically better footage than an identical position in full darkness — often more improvement than upgrading the camera would give you. |
Where people over-buy and under-buy
Commonly over-bought
• Multiple cameras covering the same open backyard from different angles. One well-placed camera plus good lighting usually beats three.
• Cameras mounted high on the roofline "to see more". Height increases coverage area but destroys facial detail — you end up with wide shots of nobody identifiable.
• Indoor cameras in every room. Most homeowners stop checking them within a month, and they create genuine household privacy friction.
• Maximum resolution everywhere. Detail is a function of distance far more than megapixels — covered in our resolution guide.
Commonly under-bought
• The rear entry. Consistently the most important camera position and consistently the one people leave until "later".
• Side gates and side paths. Low visibility, easy access, and almost always the route taken to reach the back of the house.
• Sheds and garages. Tools and bikes are among the most commonly taken items, and outbuildings are usually the softest target on the block.
• Anything covering the approach rather than the destination. Footage of someone already at your door is much less useful than footage of them walking towards it.
The practical limits on your number
Three things constrain how many cameras you can sensibly run, and it’s worth knowing them before you buy.
• Recorder channels. Recorders come in fixed sizes — typically 4, 8 or 16 channels. You cannot exceed the channel count. Given the price gap between a 4-channel and an 8-channel recorder is usually modest, buying 8 channels for a 4-camera system is one of the few genuinely good "buy more than you need" decisions in home security.
• Power budget. Wired PoE systems power cameras over the network cable, and the recorder has a total power budget. Most handle a full complement of standard cameras comfortably, but high-power models with spotlights and sirens draw more.
• Storage. Every camera you add multiplies your storage requirement. Eight cameras need roughly twice the drive of four at the same resolution and settings — factor the hard drive into the cost of expansion, not just the camera.
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A sensible buying sequence Stage 1 — Buy an 8-channel recorder and four cameras covering the Core Four. This is the highest-value stage by a wide margin. Stage 2 — Live with it for a month. You will learn exactly where the gaps are, and they are rarely where you predicted. Stage 3 — Add two to four cameras for the gaps you actually found, matched to the specific roles you identified. This costs less than buying eight up front and produces a better-aimed system, because stage 3 is informed by real footage rather than guesswork. |
Frequently asked questions
How many security cameras does the average Australian home need?
Most family homes are well covered by four to six cameras: front entry, rear entry, side access, and driveway or street frontage, plus one or two for a second side path or garage. Apartments typically need one or two; large or unusually shaped properties may need eight or more.
Is four security cameras enough for a house?
For most single-storey, mid-block homes, yes. Four cameras cover the four main approaches, which is where the overwhelming majority of activity happens. Corner blocks, double-storey homes and properties with granny flats generally need more.
Where should I put my first two cameras?
Front entry and rear entry. The front covers your most-used approach and gives you close-range identification; the rear covers the point that nobody on the street can see, which is where most unobserved access happens.
Do I need cameras inside my house?
Usually not for security purposes — outdoor cameras that catch someone before they get in are far more useful. Indoor cameras make sense for specific reasons: monitoring a pet, checking on an entry point you can’t cover externally, or keeping an eye on a valuable in a fixed location.
Should I buy more cameras or better cameras?
More coverage, up to a point. Four adequate cameras covering four approaches beat two excellent cameras covering two. Once the Core Four are filled, the calculation flips and improving what you have usually gives more benefit than adding a fifth.
Can one camera cover my whole backyard?
Often yes, if it is positioned at a corner looking diagonally across rather than mounted centrally looking outward. A single well-placed camera with a wide lens covers a typical suburban backyard adequately — though detail at the far end will be limited.
How many cameras can one recorder handle?
Home recorders are typically 4, 8 or 16 channel, and that is a hard limit. Buy at least one size larger than your current plan; the price difference is small and it saves replacing the recorder when you expand.
Do more cameras mean I need a bigger hard drive?
Yes, roughly proportionally. Doubling your camera count roughly doubles your storage needs at the same resolution and recording settings. Motion or AI-triggered recording reduces the total substantially.
How high should security cameras be mounted?
Around 2.5 to 3 metres is the usual sweet spot — high enough to be out of easy reach, low enough to capture faces rather than the tops of heads. Mounting at gutter height is the single most common placement mistake.
Do I need a camera on every side of the house?
Not necessarily. What you need is a camera on every approach. A side of the house with no gate, no door, no accessible window and no path is not an approach, and covering it adds cost without adding security.
The bottom line
Four to six cameras covers most Australian homes properly. But the number matters far less than the reasoning behind it — a four-camera system built around real approach paths will outperform an eight-camera system bolted up wherever the cable happened to reach.
Do the walk-through. Count the ways in, not the walls. Cover the approaches rather than the destinations. Then buy a recorder with room to grow, start with the Core Four, and add the rest once you have a month of real footage telling you where the gaps actually are.
Want a second opinion on your layout? [Follow Online CCTV on Facebook and Instagram] for practical security guides, or [send us a DM / register for launch updates] — send through a rough sketch of your block and we’ll tell you honestly how many cameras you need. Including when the answer is "fewer than you think".
Your home should feel like the safest place you know. We’ll help you keep it that way.
APPENDIX — INTERNAL USE ONLY (do not publish)
On-page SEO settings
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Field |
Value |
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URL slug |
/how-many-security-cameras-does-a-home-need/ |
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Meta title (57) |
How Many Security Cameras Does a Home Need? (AU Guide) |
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Meta description (153) |
Most Australian homes need 4–6 cameras — but it depends on your block. Work out your exact number with our 15-minute walk-through and property type guide. |
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Focus keyword |
how many security cameras for home |
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Secondary keywords |
how many cctv cameras do i need; security camera placement home; is 4 security cameras enough; where to put security cameras house |
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Schema |
Article + FAQPage + HowTo (the walk-through section supports HowTo markup — worth adding) |
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Featured image alt |
Overhead diagram of an Australian home showing four security camera coverage zones |
This is your pillar page — build the cluster around it
This article should sit at the centre of your content structure. Every other guide links up to it; it links down to them. Google rewards this far more than isolated posts.
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Spoke article |
Links from this page at… |
Status |
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2MP vs 4MP vs 8MP resolution guide |
"Detail is a function of distance" — already referenced |
Written |
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Where to position security cameras |
The walk-through and mounting height sections |
Planned — write next |
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Wired vs wireless cameras |
The practical limits section |
Planned |
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CCTV storage and recording time |
The storage constraint bullet |
Planned |
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CCTV laws in Australia |
Side access / boundary coverage — privacy masking |
Written |
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Security cameras for renters |
The apartment row in the property type table |
Planned |
Why this article should rank
• Reframes "how many" as "how many approaches" — a more useful answer than the flat "4 to 6" every competing page gives.
• The property-type table targets several long-tail variants (apartment, townhouse, corner block, acreage) from one page.
• The walk-through is a genuine HowTo — eligible for HowTo schema, high dwell time, and the most shareable section.
• Ten FAQs in natural question phrasing for the People Also Ask boxes.
• Brand-neutral and product-neutral, so it works during soft launch and converts later without a rewrite.
Before you publish
• Commission a diagram. This is the single highest-value asset for this article. A simple overhead floorplan showing the Core Four positions with coverage cones would be shared, embedded and linked. Worth paying a designer for. Make it downloadable as a PDF checklist to capture emails.
• HowTo schema. Add HowTo schema to the walk-through section in addition to the FAQPage markup.
• Wire up the cluster. Link every spoke article as it goes live, and add a link back to this page from each of them.
• The CTA is doing real work here. "Send us a sketch of your block" is a genuinely good soft-launch CTA — it captures inquiries without needing pricing, and it gives you real customer data about what people are trying to protect.
Risks flagged
• Only two statistics, deliberately. I have used only two, both attributed with source and year: Crime Statistics Agency Victoria (doors ~41%, windows ~17%, year ending December 2018) and the AIC Western Australia detainee study (~two-thirds entered through unlocked doors or windows). Everything else I found came from insurers, locksmiths and camera retailers quoting each other with wildly inconsistent numbers — do not add any of it.
• Both figures are dated. The Victorian figure is from 2018 and the AIC study is older still. They are directional rather than current. Keep the year visible in the text, link both to source, and check for newer releases at each review.
• Commercial tension worth naming. Recommending fewer cameras is the right advice and it builds trust, but be aware it caps average order value. That is the correct trade during audience-building. Revisit the framing once the purchase flow is live — not to inflate the count, but to make sure expansion paths are clearly signposted.
• Check this against your range. The article repeatedly recommends buying an 8-channel recorder for a 4-camera system. That is honest advice, but make sure your eventual product range actually supports it — otherwise you are sending people elsewhere.
