Pride Plumbing came out and provided a cost estimate to perform the following work: 1) cut and dig down underneath the concrete sidewalk at the front of the building and replace the cast iron drain line in that area; 2) in the middle section to the left of the bathroom area, cut and dig down to the cast iron drain line and replace that section of pipe; 3) on the back side of the bathroom in the kitchen area, either a) dig down to the cast iron drain line and replace that section of drain line; or b) clean and install UV fiberglass cured-in-place pipe (CIPP) within that section of cast iron drain pipe; and 4) test for leaks and proper drainage.