He has house worth millions dollar, still he is not happy. He has house but not people in house. Every member of house is in his own cell. He is alone. No-one is happy being alone. You get happiness when there are people around you. Like minded people as well as people with difference.
So, let house be big or small, but have your family and friends with you. You can have events. Invite all loved ones. Be together. Love each other.