Home is, normally, the place you're thinking of running to when you want to hide for a while from the world... wherever you feel loved, safe and secure. I don't think the feeling of "being" home is limited to a building or a house where you have lived in before, I see it as memories you keep in some magical and different form. Everytime you want to be "home" you are actually just wanting to feel accepted and comfortable... and it's asociated to the place you spent your childhood because, in general, that is the stage when you felt that way...
Have a wonderful day ! =)