Adding Smart Home Technology: Existing Home or New Build?

Both paths lead to the same place. In a new build, you wire for everything while the walls are open, which is the cheapest and most capable moment there will ever be. In an existing home, modern wireless technology and some targeted cabling deliver most of the same result with no renovation at all. The only real mistake is assuming your situation rules a smart home out, because neither one does.

Making an existing home smart

The retrofit story has changed completely in the last decade. Wireless lighting control, battery powered sensors, smart locks, wifi connected climate control and battery motorised blinds mean a Melbourne home built in 1935 can run the same scenes and schedules as one built last year, without a single wall opened. Lighting, climate, security and audio, the four things most households want, all retrofit cleanly now.

Where cabling still earns its place in an established home, it can usually be run discreetly: through the roof space to ceiling speakers and wireless access points, down to a camera at the eaves, into a cupboard that becomes the equipment hub. A good retrofit plan is mostly wireless with a handful of well chosen cables, staged so you can start with the rooms that matter and grow from there.

Building a smart home into a new build

When to plan it

At design stage, alongside the architect, and no later than electrical planning. This costs nothing and buys everything: equipment cupboards end up in sensible places, keypads land where furniture will actually be, and the electrical plan is drawn once rather than amended. The most expensive sentence in home technology is we will sort that out after handover.

The wiring stage, step by step

Smart home cabling goes in at rough in, the same stage as the electrical wiring, before plaster. Data cabling runs to wireless access point positions, TV locations and the equipment cupboard; speaker cable runs to ceiling speaker positions, including rooms you might finish later; power and control runs to blind and curtain positions; and cameras and intercom positions get their feeds. Then one of the cheapest insurance policies in construction: conduit, empty pipes through the hard to reach paths, so that whatever technology arrives in 2040 has a way to travel. After plaster, everything is fitted off and programmed, and the technology disappears into the architecture.

If you are a builder or architect working on a project like this, we can plan it with you from design stage. See our partner with us page.

Smart home wiring: what actually needs a cable in 2026

Less than the industry used to insist, and more than nothing. Wireless handles control signals brilliantly; cables still win wherever there is a lot of data or a need for absolute reliability. The honest shortlist: a wired network backbone with access points positioned for full coverage, because every wireless device leans on it; cameras, which run best on powered data cabling; fixed speakers and screens; and power to motorised blinds. Sensors, switches, locks and most everything else are happily wireless. Wire the backbone, let the rest float.

Three myths worth ignoring

• Everything is wireless now, so wiring is pointless. Control is wireless; the backbone is not. A home full of wireless devices with weak network coverage is a home full of complaints.

• It is too late once the house is built. The entire retrofit industry disagrees, and so does every established home we have completed. The path is different; the destination is not.

• You have to choose your platform before the slab is poured. You do not. Cabling is generic: data, speaker and power runs serve any platform chosen later. Wire once, decide the front end at fit off.

A staged retrofit that works

Retrofits succeed when they are staged, and stall when they try to be everything at once. The sequence we recommend for most established homes:

• Stage one: the backbone and the daily wins. A properly planned wireless network and the CleverMate Hub, then lighting and climate automation in the main living areas. Immediate daily benefit, and the foundation everything else joins.

• Stage two: security. Smart locks, a video intercom and cameras on the approaches, integrated with the stage one system so the house can respond, not just record.

• Stage three: the pleasures. Multi room audio, automated blinds and the remaining rooms, added as budget and appetite allow.

Each stage is complete and useful on its own, which is what makes the plan resilient: pause after any stage and you still own a finished system, not half of one. The essential discipline is designing all three stages on one platform from day one, so nothing bought in stage one gets thrown away in stage three.

Which path costs less?

Per capability, the new build wins, because labour while walls are open is a fraction of labour afterwards, which is why we tell everyone building to wire even the rooms they will not finish for years. In total dollars, retrofits are often the smaller projects, simply because they are staged around a household’s priorities rather than doing everything at once. Realistic ranges for both sit in our guide to home automation costs in Australia, and if you are choosing platforms along the way, our platform comparison is the companion read.

Frequently asked questions

Can an old home become a smart home without rewiring?

Yes. Wireless lighting control, sensors, locks, climate control and audio cover most of what households want with no wall opened. A retrofit plan typically adds only a few discreet cables, run through the roof space, for the network backbone, cameras and ceiling speakers.

When should I involve a smart home integrator in a new build?

At design stage, and certainly before the electrical plan is finalised. Early involvement costs nothing extra and means cupboards, keypads and cable runs are planned once, properly. After plaster, every change gets harder and dearer.

What smart home wiring should every new build include as a minimum?

A wired data backbone with ceiling access point positions, powered data runs to camera and intercom positions, speaker cable to living areas, power to window coverings, and spare conduit on the hard paths. That set is platform agnostic and keeps every future option open.

We are renovating. Is it worth opening walls for cabling?

If walls are already open in the renovated zones, absolutely, wire those zones to new build standard while access is free. Opening untouched walls purely for cable is rarely worth it now; wireless covers those areas and the budget goes further elsewhere.