I saw the pattern in answering this question, many will emphasize more on the design, style, colours etc. I mean, it can be done and applied in anyone's own house bah kan? I dont see the point of dreaming to have it when all it takes is your creativity.
As for me, my dream house would be a smart home.
It can be of many designs but i like this one the most.
"When you're not home, nagging little doubts can start to crowd your mind. Did I turn the coffee maker off? Did I set the security alarm? Are the kids doing their homework or watching television?
With a smart home, you could quiet all of these worries with a quick trip online. When you're home, the house takes care of you by playing your favorite song whenever you walk in or instantaneously dimming the lights for a movie. Is it magic? No, it's home automation. Smart homes connect all the devices and appliances in your home so they can communicate with each other and with you"- sourceVery interesting yes? Well, no harm in dreaming right? :D