The outside of the Flabby Patty shack is very small. It is made with many wood planks and has a metal roof with a chimney. It features a window in the front, which allows customers to order and get their food, and a door on the side of the building, leading into the kitchen. It also has a large sign that resembles a Flabby Patty and reads "Flabby Patty" in red text.
The inside of the Flabby Patty shack is very tight and cramped. There is a kitchen in the back, where the Flabby Patties are made.