I'm looking to frame in this room (photo 2) to utilize the space for a 1st floor bathroom / 1st floor laundry room / storage.
I think I have the process down having seen my uncles and brothers houses being built from the ground up. On the 2 interior walls, use 2x8's around the perimeter; the 2 exterior walls, build a 2x4 wall from the concrete slab to the bottom of the 2x8 height of the interior wall. Floor joist across the span, 3/4 plywood over and build the remaining 2x4 wall to the ceiling (all of this after the demo of course)
The brick pillars you see in photo 2 are structural, so I won't be touching those. Photo 4 - the bathroom would be to the right of it and the laundry space to the left. trying to leave the sky light in place.
My problem comes in with the concrete steps in photo 1. I don't want to have to take them out as to not disturb the foundation. I think I can frame around them. If my measurements are correct, I think i can simply fill in the void of the top step (just outside the door) to equal the floor in the house inside the door (which has already been refinished with 18 inch porcelain tile)
I will loose the big interior window (connected to the dining room) but will remove the door and make that the entrance into the room. Photo 2, eventually the window on the right edge of the photo will be taken out and converted into a french door or sliding door to access a new patio (some day)
Is that a suitable plan?