The House itself plays a very important part, especially in how the narrator reacts to it. She is fully aware that she does not belong there, everything about it is described in negative terms delineating everything that it isn't versus what it is. It's by knowing where she doesn't fit that she knows to where she might fit. It is similar to the concept of light and dark. We know that darkness is the absence of light, in this case her identity exists outside of this house on mango street.
Mango street is very much like the south where people lived unnaturally together to produce a product; the real world than its own fantasy. The characters on these streets are also the same, society is portrayed as being against innocence and unpretentious. Lee's house is a reflection of this: it has all the aspects of the u.S but it's placed in a foreign landscape. The trees, the street signs, the house, everything about it is an altered representation of the "real thing". Lee's house is an example of a hermetically sealed world that could be called "caul home". d2c66b5586