Buyer Guide • Security • Sydney
How Many CCTV Cameras Do I Need for My Home or Business?
Most Sydney single-storey homes genuinely need 4 cameras. Double-storey or corner blocks usually need 6. Larger properties or businesses start at 8+. But the honest answer depends on entry points, sight lines, and risk profile more than property size. Here’s how a licensed Sydney installer decides on a site visit — and the numbers to start with before you call one.
The Short Answer — Camera Count by Property Type
| Property type | Cameras | What they cover |
|---|---|---|
| Single-storey house, standard block | 4 | Front door, driveway/garage, back door, side access gate |
| Double-storey / corner block | 6 | Add: second side, rear yard wide, secondary entry |
| Large block / high-value / complex perimeter | 8+ | Full perimeter + redundancy at key points + outbuildings |
| Small office (1–3 rooms) | 4 – 6 | Entry, reception, server room, rear exit, car park |
| Retail shop (standard shopfront) | 4 – 8 | Entry, POS counter, stock room entry, rear exit (NOT inside fitting rooms) |
| Small warehouse / trade depot | 8 – 16 | Loading dock, all entries, aisles, office, perimeter — with overlap |
| Strata building common area | Varies | Lobby, lifts, car park — OC by-law required first |
Real camera count depends on block size, topology, and entry count — a site walk by a licensed installer is the only way to confirm. The numbers above are good starting points, not final answers.
Start With the Entry Points — Not the Camera Count
Experienced installers don’t start by asking “how many cameras do you want?” They start by walking the property and counting entry points + vulnerable windows + sight-line gaps. The camera count falls out of that.
Priority coverage for any property:
- Every door. Front, back, side, garage internal — each one needs a camera with a clear view of the approach (not just the door itself).
- Every gate / driveway entry. The camera should capture the face of anyone approaching, not just vehicles arriving.
- Off-street ground-floor windows. Around 30% of Sydney break-ins enter through an unlocked window, per ADT AU data. A camera above a vulnerable window covers that risk.
- Blind spots at corners and side paths. These are where intruders feel safest.
Mount exterior cameras at 2.5–3.5 metres — high enough to resist tampering, low enough to capture faces at a useful angle (slight downward tilt).
Residential Homes — 4, 6, or 8 Cameras?
4 cameras
Front door, driveway/garage, rear of house, side access gate. Covers a typical single-storey Sydney suburban block end-to-end. This is the most common residential configuration and handles the vast majority of insurance-motivated installations. Budget: $1,800–$2,800 installed.
6 cameras
All of the above plus: second side path or corner coverage, rear yard wide shot, or an additional indoor camera. Ideal for double-storey homes, corner blocks, properties with side lane access, or larger 700–900 sqm blocks in Western Sydney suburbs like Blacktown, Penrith, and Kellyville.
8 cameras
Full perimeter with redundant coverage at key points. Suitable for rural-residential fringe properties, high-value Eastern Suburbs homes, properties with a large shed or granny flat, or anywhere you genuinely have complex perimeter needs. Over-specced for a standard 400 sqm suburban block. Budget: $3,500–$5,500 installed.
12+ cameras
Typically commercial or very large residential. Includes PTZ (pan-tilt-zoom) cameras for open areas. Almost never the right call for a standard home — if you’re being quoted 12 cameras for a 500 sqm residential block, get a second opinion. Most residential installers are upselling here.
Commercial & SMB — Counts by Venue Type
| Venue | Cameras | Critical coverage |
|---|---|---|
| Small office (1–3 rooms) | 4–6 | Entry, reception, server/records room, rear exit |
| Retail shop (single storefront) | 4–8 | Entry, POS counter, fitting room approach (NOT inside), stock room entry, rear exit |
| Café / food business | 4–6 | Entry, counter/till, kitchen pass-through, outdoor seating if at risk |
| Small warehouse / depot | 8–16 | Loading dock, all entries, storage aisles (with overlap), office, perimeter |
| Multi-tenant commercial strata | Varies | Lobby, lifts, car park, stairwells — OC special resolution required |
| Service station / fuel retail | 12–20 | Pump area, canopy, tills, shop interior, perimeter, forecourt entry/exit |
Field of View — Which Lens for Which Spot?
| Lens (focal length) | Field of view | Best for |
|---|---|---|
| 2.8 mm | 90–110° (wide) | Close-range wide coverage: porches, small car parks, indoor corridors, front door close-up |
| 3.6 mm | 78–90° | General outdoor surveillance, driveways, moderate distances — most common all-round choice |
| 6 mm | 50–60° | Identifying detail at distance: long driveways, car park exits, retail POS counter |
| Varifocal (2.8–12 mm) | Adjustable | Where coverage needs may change, or installer wants to fine-tune post-mount |
Night Vision — IR, Colour, or Spotlight?
| Type | How it works | Best for |
|---|---|---|
| Infrared (IR) | Invisible IR LEDs; produces black-and-white footage in full darkness | Covert surveillance, low-cost general coverage, complete darkness conditions |
| Colour night vision (starlight) | Advanced image sensor amplifies ambient light; full-colour footage in low light | Sydney suburbs with street lighting — identifies clothing + vehicle colours |
| Spotlight (white LED) | Built-in visible white light activates on motion; full-colour footage in full darkness + active deterrent | High-crime-risk properties, driveway entry, where deterrence matters more than covert recording |
NSW Legal Rules You Need to Know Before You Install
Three rules every CCTV owner in NSW should know:
- Residential — Surveillance Devices Act 2007. Audio recording of private conversations without all-party consent is a criminal offence. Video-only is the default. Cameras should cover your property, not the neighbour’s — filming into their bedroom, bathroom, or private outdoor area can constitute an invasion of privacy.
- Business — Workplace Surveillance Act 2005. Any NSW business premises using CCTV must: have clearly visible cameras, display signage at every entrance, and give employees at least 14 days written notice before surveillance starts (shorter if agreed). Toilets, bathrooms, and change rooms are prohibited. Non-compliance penalty up to $55,000.
- Strata — OC special resolution required. Cameras on common property need an owners corporation special resolution and a specific by-law governing use and maintenance. NCAT has twice ordered unauthorised cameras removed at the lot owner’s expense. Signage at all common-property entrances is mandatory.
A licensed Sydney installer configures all three by default. DIY installations are where these rules most commonly get broken.
Primary sources: AS 2201 intruder alarm standard · Australian Privacy Principles.
Frequently Asked Questions
How many CCTV cameras does a typical Sydney home need?
Most single-storey suburban homes need 4 — front door, driveway/garage, rear door, and side access. Double-storey homes, corner blocks, and larger properties (600+ sqm) typically need 6. Over 8 cameras is rare for residential and usually a sign of over-speccing.
Is 4 cameras enough for a house?
For most standard single-storey suburban blocks in Sydney, yes. 4 well-placed cameras cover every entry point and the driveway. If you have a double-storey home, a corner block, or a secondary entry (side lane, granny flat), stepping up to 6 is worth it.
Do I need council approval for CCTV in NSW?
No council approval is required for installing CCTV on your own private property. However, strata common areas require owners corporation approval via by-law, and businesses must comply with the Workplace Surveillance Act 2005 (signage, visible cameras, staff notice).
Can my CCTV camera point at my neighbour's property?
Cameras should cover your property, not the neighbour's. The NSW IPC guidance is clear: cameras should not capture neighbour's private areas — bedrooms, bathrooms, private outdoor areas. If a camera genuinely needs to cover a shared fence line, angle it to capture your yard up to the fence, not beyond it.
Do I need signage for CCTV at my business in NSW?
Yes — clearly visible signage at every entrance to any surveilled area is a legal requirement under the NSW Workplace Surveillance Act 2005. Employees also need at least 14 days written notice before surveillance begins. Non-compliance penalty is up to $55,000.
How much storage do I need for a 4-camera system recording for 30 days?
At 4MP with H.265 compression and motion-triggered recording, roughly 2–4TB covers 30 days for 4 cameras. For 24/7 continuous recording add 50–100%. For 4K continuous recording, plan for 8TB+. Surveillance-grade HDDs (WD Purple, Seagate SkyHawk) are the right choice.
Are dummy CCTV cameras legal in Australia?
Yes, legal. Effective against opportunistic inexperienced intruders, but experienced offenders identify them quickly by weight, LED pattern, and lack of IR glow at night. Dummy cameras provide no footage when something actually happens. Use them only as supplements to real cameras covering the same zone — never as standalone primary security.
Can a lot owner install CCTV in a NSW strata building?
Inside your own lot, yes — it's your property. On common property (corridors, lobby, car park), no — not without an owners corporation special resolution and a specific by-law. NCAT has twice ordered unauthorised strata cameras removed at the lot owner's cost. Get the by-law passed first.
Want a definitive answer for your property?
We'll walk your site, count your entry points, check the sight lines, and give you a written layout — not a generic 4/6/8 quote. Licensed, insured, honest about numbers.