The House of Herobrine is 12 blocks high and 14 in width for the front and back side of the building. As for the sides it is still 11 blocks high, but 15 in width,
The House of Herobrine has five major rooms: the kitchen/living area, which seems to be half destroyed, with holes in the floor and roof;
The basement was thought to be a little room under the living room to store things in. It turns out that if you walk in and walk to the right there is a little opening with a door.