I never consider a new house for my sims truly lived in unless I've given them enough amenities and furnishings in their homes that it doesn't feel so...empty. Recently I took a 5 sim household (4 guys and a dog) to move from their cramped appt to a house in Windenburg. It was the Munch's old house and when they died it became unfurnished, and to save money I only brought over a few furnishings and sold whatever was left in their old appt. Since that's a big house and they don't have much to spend on furnishing properly, it's still just has the basics and won't feel "lived in" for awhile until I've filled their house with what I feel they should have.
