What does Melissa's home, Stottswood, represent in the novel, Workin’ for Peanuts?

In Chapters 18 and 19, Jeff and coworker Rick (Speed) sneak onto the grounds of Melissa's home, which has a lawn as big as a football field. At first, Jeff is a trespasser at Stottswood, hiding in the bushes as Melissa plays Scrabble with another boy. Later, after Melissa invites him to come visit her, Jeff still feels uncomfortable at the house. As the story unfolds, Stottswood comes to represent Jeff and Melissa's social differences.