They are tricking you. You are the Master of the Dark Brotherhood. Actually killing the resident of the house. And then a rebellion starts sending Skeevers and Gaints after you. You will have these Quests
Sing a song for your bard
Kill Your kid to Live OR
Sacrifice yourself to a dungeon for your family's saftey and Escape
Protect your house with a castle
Mwahaha
Who doesn't want this