Just an idea of how to use a supporting wall and still open a stairwell section. Basement Stair - removing part of the wall and replacing it with spindles and handrail makes the basement feel more like a lower level than a basement.
How to Finish a Foundation Wall - We show two good ways to insulate and finish a basement or concrete wall. A wall saves space and a wall is easier to assemble and insulate. Both will create that snug extra room you need. By the DIY experts of T