A structural engineer should be consulted to help determine if the wall is load-bearing and what needs to be done to safely remove it. If the wall is not load-bearing, it can probably be removed without any special structural modifications, but it's always best to consult with a professional if there's any doubt.

You may not need a structural engineer to remove a wall, but it's always best to consult with one to be sure. The primary concern with removing a wall is the potential for the removal to cause damage to the structure of the building. A structural engineer can assess the condition of the building and help determine whether or not it's safe to remove the wall. They can also recommend specific methods for removing the wall safely.