

No? Sorry rather clueless about the practical aspects of that. But for electrical why is it not viable to just have channels you can push cables through? Do you mean because of corners?
Generally I was only thinking of simpler structures though like tiny houses or 1-2 room bungalows so it shouldn’t be too complex wiring or plumbing.
Well yeah moving channels would be kinda impossible. I imagine while designing the house you’d plan for the electrical wires and 3D print clean channels you can slide wires or flexible piping through. You could also have extra channels near the floor and in the middle and vertical channels.
This would really only be good for lightweight structures that don’t need much load bearing, like tiny houses or RVs or huts or bungalows. Maybe structures on house boats / catamarans.
Instead of renovating, just melt it all down to recycle it and 3D print a new house haha.