I built houses for years. I was a General Contractor. I'd run extra empty conduits and come up in a wall and run to attic. Sleeve water lines in cheap plastic pipe, the ones below slab. Run a gas line into heater closet so you can at least use a heater of some sort if power outage. You can use a propane grill bottle outside and heat. If you have nat gas, use it. Run line to stove. Even if you're all electric. Provision for a fire heater, wood, pellets, corn. Build in every option you can. I will say, I have heated with a fish cooker with a stack of bricks on it.