Much of the action and events in the play All My Sons takes place in the Keller's backyard, which is located near the edge of a town somewhere in the United States. In the opening stage directions, Arthur Miller goes into quite some detail describing the layout and details of this backyard. Tall poplar trees hem in the grassy yard, lending it a private ambiance. Extending from the back wall of the house is a large open porch. The house itself is also significant. It has two floors and seven rooms. Miller mentions that it would have cost about fifteen thousand dollars when it was first built in the early 1920s. This was no small sum of money at the time. All this suggests that this is the nice suburban home of an upper-middle-class family.
The setting of this play is symbolic of the American Dream in many ways. The play is set in the late 1940s, so all the adult characters would have lived through the Great Depression in the 1930s. They know what it is like to be poor. To own a home like this one shows that Joe Keller has become successful by earning enough money to support his family's suburban lifestyle.