Potential Basement Bathroom.
I know it will be hard to tell for sure from a single picture, but this is the existing basement in a house I currently own.
When I move in, I would like to put a Universal Access bath with a shower in the approximate location of the Dryer. You can see the sewer line going from back to front in the Left hand portion of the picture. I believe the outlet is at floor level by the front corner of the house. It appears from counting blocks that the vertical part of the stack going up is about 8 feet away.
Philadelphia utilizes a Single Stack system. For reference the front wall of this house is At the sidewalk and sidewalk level is approximately at the level of the joist space in the basement. Each side wall is a party wall. I plan an egress window on the back wall of the basement opposite this wall.