As long as they're not in what the Chapple family likes to call a "time out" in which they're kept in the cellar, the Lycans live in the Lycan part of the mansion. They aren't allowed in the family part of the mansion without supervision. During the three days of full moon transformation, they stay in the cellar. The Lycan part of the house is at the back half, and the cellar is built behind and underground the Lycan part.

OMG! Please do sketch out a visual because that is perfection. I tried to create one in Paint, but my skills for maps/layouts simply do not exist.