Design

The house is pink-orange two-story detached house with an attached garage, basement, and loft. A suburban tract house, the building is at least 50 feet wide. The front door leads straight into the hallway where an arch to the left leads to the sitting room, and one to the right leads into the dining room. There is also a small cupboard and stairs to the second floor. The sitting room and the dining room have bay windows. At the back of the house is the living room and the kitchen. Also toward the house's rear are stairs to the basement, which are replaced by a closet in some episodes. Although rarely seen, there is also a hallway leading to a rumpus room.

The second story of the house has the bedrooms, including Marge and Homer's bedroom (with an ensuite bathroom), Bart's bedroom, Lisa's bedroom, and Maggie's bedroom. There is a bathroom and some empty rooms, often shown in inconsistent places in different episodes. On the landing, there is a hatch which leads to the attic. A 1995 episode set fifteen years in the future shows a wooden addition to the second floor, built (rather poorly) by Homer. It functions as a guest bedroom, but Homer warns Lisa and her fiancé that, "If the building inspector asks, it's not a room. It's a window box".

The back yard of the house is surrounded by a wooden picket fence and a low box hedge. It features a patio and Bart's treehouse, from which The Simpsons annual Halloween specials take their name. Occasionally, there is a hammock tied to two trees near the fence that borders Ned Flanders' backyard.

Features and furniture