No worries thanks the clarification.
FWIW your house does not need smart devices, you can add them yourself as easily as adding a light bulb and a ZigBee dongle on your RPi or even desktop (but nicer if it's always on IMHO).
You screw the light bulb in and if you leave the house one day for another one, you just unscrew it. Sure you can do more, e.g. replacing light switches, etc but you can also add plugs the same way.
I'm not trying to say anybody "needs" that, only highlighting that it's not a heavy thing to setup and remove.