I'm starting to think about the wiring for my extension.  

I'll be chasing the wiring into the wall, obviously, and fitting nice deep backboxes wherever I can.

I'm wondering if it's worth fitting double-width back-boxes for light-switches, even ones which are perhaps just 1 or 2 gang, to allow for future swapping of a dumb switch for something smart.  (I'll be pulling neutrals to each switch location anyway)

 

I've not considered any particular products yet, though the ecosystem will most likely be Home Assistant as I'd like to keep control/processing local.  Initially things will be wired 'dumb' with conventional switches, with the intention of gradually swapping in controls and devices as budget allow..

 

Am I other-thinking things?

Watching with interest, though sorry I can't help myself.

 

Why the neutral wire?

See a lot of people running 3 core and earth to lights from switch position too.

 

allows a permanent feed and a switched feed at the light position, so along with the neutral at the switch you have covered mains power automation.

 

35mm deep boxes all the way….