There are a few key indicators that we use to determine if a wall is load-bearing. 1) The direction of ceiling joists – if the joists are perpendicular to the wall, then there is a chance that the wall is bearing the load of the ceiling joists. 2) The location of the wall in relation to the support wall/steel beam in the basement. 3) Roof structure – Whether the house has a self-supporting roof with trusses or if it has rafters resting on interior walls. We always consult with a structural engineer before proceeding with a project – They aid us in doing load calculations and submitting permit drawings.