Eiji Aonuma has confirmed that The Legend of Zelda: Breath of the Wild will have no Loading Screens in the Overworld!

[Ljink96]

So I expect that going into houses won't require loading times either, that's great. I kind of hoped it would be like that after seeing the woodcutter's house in the demo. I know Nintendo's hiding so much from us, can't wait to see what this game has to offer!