Complete Guide to Setting Up a Small Business CCTV System
Step-by-step CCTV setup guide for Australian small businesses. Covers camera placement, NVR sizing, PoE cabling, network segmentation and compliance.
A well-planned CCTV system protects your premises, staff, and stock — and a poorly planned one wastes money and creates blind spots. This complete guide walks Australian small business owners through every step, from site survey to network setup.
Why Small Businesses Need CCTV in 2026
Modern IP CCTV is dramatically more capable — and affordable — than the analogue systems most businesses still run. With 4K resolution, AI-driven motion analytics, smartphone alerts, and cloud or NVR-based storage, a smart CCTV deployment now actively prevents incidents rather than just recording them after the fact.
For Australian retailers, warehouses, cafes, workshops, and offices, CCTV pays for itself through reduced shrinkage, lower insurance premiums, and faster incident response.
What This Guide Covers
- Site survey and camera placement strategy
- Choosing the right camera types and resolution
- NVR sizing and storage calculations
- Cabling, switches, and PoE requirements
- Network segmentation and remote access
- Compliance and signage obligations
Step 1: Site Survey and Camera Placement
Before buying anything, walk your premises with a notepad. Identify high-value zones (entrances, registers, stockrooms, loading docks, carparks) and document line-of-sight, mounting surfaces, and lighting conditions.
Camera Placement Rules
- Cover every entry and exit — front door, back door, fire exits, roller shutters.
- Mount at 2.5m–3m — high enough to deter tampering, low enough to capture facial detail.
- Avoid backlighting — never aim a camera straight into a doorway with bright sunlight behind subjects.
- Overlap fields of view — so a single obstruction doesn't blind a critical zone.
- Respect privacy — never aim into neighbouring properties, residential windows, or staff bathrooms/changing areas.
Step 2: Choosing Cameras
| Camera Type | Best For | Typical Resolution | Notes |
|---|---|---|---|
| Bullet | Outdoor perimeter, carparks | 4MP–8MP | Long range, IR up to 50m |
| Dome | Indoor retail, offices | 4MP–8MP | Vandal resistant, discreet |
| Turret (Eyeball) | Entrances, low ceilings | 4MP–8MP | Less IR reflection than domes |
| PTZ | Large carparks, warehouses | 4MP–8MP | Pan/tilt/zoom, auto-tracking |
| Multi-sensor | Wide open zones | 4 x 4MP+ | 360-degree single mount |
Resolution: How Much Is Enough?
For most small business deployments, 4MP (2K) hits the right balance of detail, storage cost, and bandwidth. Step up to 8MP (4K) for wide carparks, large showrooms, or any zone where you need to identify a face or licence plate from 8m+ away.
Step 3: NVR and Storage Sizing
Your NVR (Network Video Recorder) is the brain of the system. Size it for your camera count plus 30–50% headroom for future expansion.
Quick Sizing Formula
- 4 cameras: 4-channel NVR, 2TB HDD
- 8 cameras: 8-channel NVR, 4TB HDD
- 16 cameras: 16-channel NVR, 8TB HDD (or 2 x 4TB in RAID 1)
- 32 cameras: 32-channel NVR, 2 x 8TB or higher
Storage Retention
Most insurers and compliance frameworks require 30 days minimum retention. As a rule of thumb, a single 4MP camera at H.265 with 24/7 recording uses around 30–40GB per day. Multiply by camera count and retention days to size your drives.
Always specify surveillance-grade hard drives (WD Purple, Seagate SkyHawk) — desktop drives will fail under continuous-write workloads.
Step 4: Cabling and PoE
Modern IP cameras use Power over Ethernet (PoE), which means a single Cat6 cable carries both data and power up to 100m.
Cabling Checklist
- Cat6 minimum — Cat5e works but leaves no headroom for higher-resolution upgrades.
- Outdoor runs: use UV-rated, gel-filled, or direct-burial cable.
- Conduit through walls and ceilings for protection and future re-cabling.
- Keep cable runs under 90m from switch port to camera (allow 10m for patch leads).
PoE Switch Sizing
Most 4MP IP cameras draw 6–8W. A standard PoE+ (802.3at, 30W per port) switch comfortably powers any current-gen dome or bullet. PTZ cameras and PoE++ (60W+) cameras need a higher-budget switch — confirm the switch's total PoE budget, not just per-port wattage.
Step 5: Network Requirements
Bandwidth
Each 4MP H.265 camera streams 4–6 Mbps at full quality. An 8-camera site needs around 50 Mbps of internal LAN headroom — easy on any gigabit switch.
Network Segmentation
Always put cameras on a dedicated VLAN isolated from your business LAN. This prevents a compromised camera from being used as a jump-point into your file servers or POS systems — a real-world attack vector that has hit Australian SMBs.
Remote Access
Avoid exposing the NVR directly to the internet. Use the manufacturer's P2P cloud relay (Hik-Connect, Reolink, Ezviz, etc.) or — better — a VPN back into your network. Always change default admin passwords before connecting to the internet.
Compliance and Signage
Under Australian Privacy Act obligations and state-based surveillance device laws, you must:
- Display visible signage at every entry advising CCTV is in operation.
- Never record audio without explicit consent (varies by state — check your jurisdiction).
- Restrict footage access to authorised staff only and log who reviews recordings.
- Store footage securely and delete it once it exceeds business need (typically 30–90 days).
Build Your CCTV System with Tech Kingdom
Tech Kingdom stocks complete CCTV solutions — from single-camera kits for small shops to scalable 32-channel deployments for warehouses. Browse our full security and surveillance collection for cameras, NVRs, PoE switches, and accessories.
Need help designing your system? Send us a floor plan and we'll spec up cameras, NVR, switches, and cabling tailored to your premises — fast Australia-wide shipping included.
