The building is inhabited by giant soldier ants as well as some giant worker ants and radroaches. There are two bathrooms on the first floor, though only one of them can be entered. The other one has a broken door that is jammed shut, making it impassable. Behind the door, a broken pipe can be seen gushing water.
- Help me! - a note found on the ground just in front of the room at the back of the building (Easy locked).
- The second floor in the lobby can be reached, but it requires a lot of effort. The player needs to take a run and jump from the top of the ruined floor just behind the receptionist's desk. It has a door which can be opened and leads to a void.
The Basincreek Building appears only in Fallout: New Vegas.