My in-law has an 85 year brick house (not brick veneer) with a walk out basement (west side). Water enters the basement through the south wall and the floor. Initial thought was to put a french drain near the bottom of the foundation and dampproof/waterproof the exterior foundation wall(s). The problem is the south wall (51 feet long total) has a bay window (also brick). There is a straight line foundation that goes the full 51 feet that extends about 7 feet below grade. The mid portion of the south wall has a co-joining foundation for the bay window area (15 feet) that only goes about 4 feet below grade. So the main foundation can't be coated without undermining the bay window area foundation nor can a drain be installed next to the deep foundation/footer. Aside from piping downspout drainage away from these foundation walls and properly sloping the grade, what are the best practices for correcting the water problem? I would like to know what the best options are before I talk to a contractor.