Matter devices have become genuinely affordable, and for the first time you can pick hardware without worrying about ecosystem walls. More choice means a harder first step, though — so here is a starter kit for about ¥30,000 that you won’t outgrow.
Start with a hub and just two smart bulbs
The core is a hub with a built-in Thread border router — a HomePod mini or a recent Echo does the job. Then smart-bulb only two rooms: living room and bedroom. Resisting the urge to convert the whole house is the trick; the places you actually want voice control are fewer than you think.
Choose Matter-over-Thread bulbs: they respond faster and stay reliable even on congested Wi-Fi.
Sensors are the raw material of automation
Add one motion sensor and one contact sensor. Automating the entryway light alone changes how a smart home feels. Once a door opening can trigger lights or air-conditioning, you move from a home you operate to a home that acts on its own.
- Hub (Thread BR built in): ~¥12,000
- Smart bulbs ×2: ~¥6,000
- Motion + contact sensors: ~¥6,000
- Smart plugs ×2: ~¥5,000
Notes specific to Japanese homes
In rentals, avoid replacing ceiling fixtures that touch the hikkake-ceiling mount; stick to what bulb swaps can reach. Japanese air conditioners still largely speak infrared, so one Matter-compatible smart IR blaster massively extends your coverage.
The ¥30,000 recap
Hub, two bulbs, two sensors, two plugs: roughly ¥29,000 all in. From here, just add one device wherever friction appears — and thanks to Matter, you get to re-choose the vendor every time.