Load bearing walls are the walls that support the weight or load of the floors above as well as the roof of the house. It is important to know which wall is bearing the load since damage to a load-bearing wall can cause serious structural damage to the whole house. You can identify a load-bearing wall by looking for concrete footers in the basement. Walls directly above these footers will be load-bearing walls. However, concrete footers are just one way of identifying these important structural elements. A professional is best equipped to identify which walls are load-bearing walls. So, always get an expert opinion before starting to remove any interior or exterior walls.