Perform drain cleaning through newly installed clean out. Install finish clean out and pour 4â€™ x 2â€™ concrete patch at back patio. Rebuild kitchen sink drain with new undersink drain pipe, clean out, and tie into existing line in crawlspace. Run large amount of water and ensure everything is working properly. Main sewer line ties into neighbors sewer line. The line consists of concrete and has multiple bellies and a spot where the line is broken at location in between sidewalk and road. Will provide pricing to replace sewer line. Thank you for choosing CPI!