In one sense, Jane Eyre is about the quest of an orphan girl for a home. In this novel, home isn’t just where you hang your hat – it has to be somewhere that you not only feel comfortable and safe, but also have loving relationships with other people. It’s even possible for characters to be metaphorically homeless here even though they’ve lived in the same place their whole lives. It’s also possible for characters to have more than one home because they have different family and romantic relationships that create several comfortable refuges for them.
Jane conceives of "home" as an emotional place created by interpersonal relationships, not as a physical shelter.
Jane tends to feel more at home outside than inside because the natural world has provided her with more of a refuge than any human habitation.