A hundred years is a very long time..

1. In house printable food and goods.
2. No wiring, cords or power outlets. Everything interconnected, free-charging and wireless.
3. No grid connections. Power, water everything self-contained.
4. No garages. All transportation will be air based and on demand.
5. All windows will be dimmable and add to power supply.
6. All surfaces will be self cleaning and nanobots will clean and sterilise everything constantly.