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Do I need a wired or wireless smart home system?

For most buyers, a wireless system (Google, Alexa, Apple) is adequate — it's cheaper, easier to set up and can be added after handover. For premium homes, a wired system (C-Bus, KNX, Control4) is more reliable and capable, but it's expensive and must be installed during the build. If you want a wired system, plan it during pre-construction.

Can I add smart home features after handover?

Yes — most smart home devices (smart speakers, smart bulbs, smart plugs, smart locks, wireless cameras) can be added after handover without any pre-wiring. However, the underlying provisions (neutral wires, data cabling, camera wiring, ceiling fan provisions) are much cheaper to install during the build. Plan provisions during the build, add devices over time.

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Energy Efficiency & Smart Home

Home Automation Basics: What to Pre-Wire for a Smart Home

What to pre-wire for smart home features — structured cabling, smart switches, hubs and NBN.

6 min read·Compare My Build — Independent Resource· Updated July 2026

Cost estimates only: Any building or upgrade figures in this guide are indicative, not fixed prices or quotes. Costs and inclusions vary by project, supplier, location and time. Confirm current written prices and specifications directly with your builder, suppliers and relevant trades.

Key Takeaways

Pre-wiring for smart home features during the build is much cheaper than retrofitting later
Key provisions: structured data cabling, smart switch wiring, NBN connection, hub location, security camera wiring
Smart home devices (speakers, cameras, thermostats) can be added later, but the wiring is best installed during construction
A central hub location (for NBN, router, smart home controller) is essential
Not all smart home features need pre-wiring — many are wireless and can be added after handover

Smart home technology — automated lighting, security, climate control, entertainment — is increasingly popular in Australian homes. While many smart home devices are wireless and can be added after handover, the underlying wiring is much cheaper to install during the build. Understanding what to pre-wire helps you build a smart-home-ready home without overspending.

What Is Home Automation?

Home automation uses technology to control and automate home functions — lighting, blinds, climate, security, entertainment and appliances. Smart home systems can be controlled via apps, voice assistants (Google, Alexa, Siri) or automated schedules. The goal is convenience, energy efficiency and security.

What to Pre-Wire During the Build

Structured data cabling (Cat6) — run Cat6 cables from a central hub to key rooms (living, study, bedrooms, media room); enables fast, reliable wired internet and smart home connectivity
NBN connection — ensure the NBN connection point is in a central, accessible location (not in a difficult-to-reach spot)
Smart light switch provisions — ask for 'neutral wire' at all switch locations; this is required for most smart light switches
Ceiling fan provisions — wiring for ceiling fans in bedrooms and living areas; smart fans can be controlled via app
Security camera wiring — run cables to eaves and entry points for future security cameras; cheaper than wireless for permanent installations
Video doorbell wiring — a power supply at the front door for a video doorbell (Ring, Nest, etc.)
Speaker wiring — in-ceiling or in-wall speaker wiring for media rooms and alfresco areas
Central hub location — a designated location (laundry cupboard, garage) for the NBN box, router, smart home controller and network switch
EV charger provision — conduit and circuit from the meter board to the garage for a future EV charger

Tip

The most important smart home provision is 'neutral wire' at all light switch locations. Standard light switches often don't have a neutral wire, which most smart switches require. Adding neutral wires during the build is cheap ($10–$30 per switch); retrofitting them later requires an electrician to rewire each switch ($100–$200+ per switch). Ask your builder to include neutral wires at all switch locations.

What Can Be Added Wirelessly After Handover

Smart speakers (Google Nest, Amazon Echo) — wireless; plug into a power point
Smart lighting (Philips Hue, LIFX) — wireless; use smart bulbs or plug-in adapters
Smart plugs — wireless; plug into existing power points
Smart door locks — wireless; battery-powered; can be retrofitted to existing doors
Wireless security cameras — wireless; battery or solar-powered; can be mounted anywhere
Smart thermostat / climate controller — wireless; can be retrofitted
Smart blinds — wireless; battery-powered; can be retrofitted

Smart Home Platforms

Smart home devices work with different platforms. Choose a platform that suits your preferences:

Google Home — works with Google Nest devices; integrates with Android; voice control via Google Assistant
Amazon Alexa — works with Echo devices; wide device compatibility; voice control via Alexa
Apple HomeKit — works with Apple devices; integrates with iPhone, iPad, Apple TV; voice control via Siri
SmartThings (Samsung) — works with a wide range of devices; hub-based system
Custom systems (Control4, Clipsal C-Bus, KNX) — professionally installed; integrated wired and wireless; premium; expensive

Wired vs Wireless Smart Home

Wired smart home systems (C-Bus, KNX, Control4) are more reliable and capable than wireless systems, but they're expensive and must be installed during the build. Wireless systems (Google, Alexa, Apple) are cheaper, easier to set up and can be added after handover, but they're less reliable and have limited capability. For most buyers, a wireless system is adequate; for premium homes, a wired system is worth considering.

Example Smart Home Provision Costs

Item	Example Cost (during build)
Neutral wire at all switches (per switch)	$10–$30
Cat6 data point (per point)	$80–$200
Security camera wiring (per camera)	$100–$250
Ceiling fan provision (per fan)	$100–$300
Speaker wiring (per room)	$100–$300
Video doorbell power supply	$100–$200
EV charger provision (conduit + circuit)	$200–$600

Real-world examples only. Costs are during the build. Retrofitting after handover typically costs 2–4x more per item.

Questions to Ask Your Builder

Can you include a neutral wire at every light switch location for future smart switches?
Where will the NBN connection point and central hub be located?
Can you run Cat6 data cabling to the living, study, bedrooms and media room?
Can you pre-wire for security cameras at the eaves and a video doorbell at the front door?
Is there conduit and a circuit for a future EV charger in the garage?

Common Mistakes to Avoid

Skipping neutral wires at switch locations — retrofitting them later costs 5–10x more per switch
Putting the NBN box in a hard-to-reach spot with no room for a router or switch
Assuming all smart home devices are wireless and need no pre-wiring
Not running data cabling to key rooms and relying entirely on Wi-Fi, which can be unreliable

Builder Tips

Neutral wires at every switch are the single most valuable smart home provision — cheap during the build
Plan a central hub location (laundry cupboard or garage) for the NBN box, router and network switch
Run Cat6 to any room where you want reliable wired internet or smart home devices
Pre-wire for security cameras and a video doorbell now — cabling is far cheaper during construction

Energy-Efficient Lighting Design

Smart lighting starts with good lighting design.

Read the Guide