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Myth Nr.1 - Smart home tech is expensive and only for new builds or full renovations
Most people freeze at the idea that home automation belongs in new construction only. In practice, wireless devices and retrofit modules let you start in a finished home—often without chasing new cables.
Apr 4, 2026 · 2 min read · Ralfs Krauze
Where the myth comes from
It is easy to assume that a “real” smart home means pre-wiring, dedicated panels, and a budget line item next to the kitchen. Many homeowners stop there and never move beyond manual switches.
In reality, a large share of everyday automation—lights, plugs, sensors, scenes, alerts—ships as wireless (Zigbee, Thread, Matter ecosystems) or as compact modules that sit behind an existing wall switch. That is the same retrofit story vendors like Shelly have been telling for years: upgrade the switch location without redesigning the whole electrical plan.
What retrofit looks like on site
Starter kits often bundle a hub, motion sensors, and bulbs or smart plugs that install like ordinary hardware. Matter adds a shared interoperability layer so you are less locked into one vendor app when you expand later.
An integrator can still give you one coherent automation model—who is home, which rooms matter at night, how guests interact with lights—even if the underlying devices come from more than one brand.
Phased adoption
Roll out by room or by use case: hallway and kitchen first, bedrooms next. After each step you know which automations actually save attention (not which gadgets were fun for a week).
Major renovation becomes relevant when you want depth—built-in audio, architectural lighting circuits, or a KNX backbone co-designed with the build. That is a later chapter, not a prerequisite to start.
When DIY ends and an electrician steps in
Battery sensors and plug-in loads are usually straightforward. Anything that taps line voltage behind the wall needs code-aware work: load checks, proper enclosures, RCD/ breaker discipline. The fast path is a short professional scope, not guesswork.
Same idea as business automation
Just as you automate repetitive office workflows first, automate the domestic tasks you repeat daily. The goal is not maximal complexity on day one; it is a stable base you can extend.
Closing
A smart home should grow with your habits—not be a one-shot project that must be “finished” before you move in.
Common questions
Can you build a smart home without a renovation?
Yes. Lighting, sockets, sensors and scenes often go in with Zigbee or Matter and smart sockets in the existing boxes. That does not need a new cable network through the whole house.
What is a retrofit kit?
It is a smart hub, sensors and bulbs or sockets that you fit like ordinary devices. Walls do not have to come open, and the system can grow one room at a time, starting with the hall or the kitchen.
Can an existing switch be made smart?
A Shelly-type module goes behind the switch cover. That is local electrical work, not a rebuild of the whole flat. A device that connects to the phase behind the wall is installed to code, and an electrician does it.
What does Matter give you?
Matter is a shared layer between makers. It lowers the risk that in two years the whole house lives in one closed app, and the family sees one logic instead of ten apps.
Where do you start in a flat?
Start with what you do every evening: lights, curtains, heating on a schedule. Hall and kitchen first, then the bedroom. Heating schedules are on the climate page.
When do you actually need a renovation?
A renovation is the next step, not the entry ticket. It becomes necessary for built-in audio, a KNX line planned with the architecture, or new lighting groups. You do not need it in order to start at all.
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