Question: how much does it cost to install plumbing for a dishwasher?
Answer: Need to install or change the dishwasher valve; a plumber costs $45-$65/hour. The new valve will cost $15-$35 plus one hour of plumbing for a total of $60-$100. Need to install new drain pipe; a plumber will cost $45-$65/hour, while plumbing lines cost about $3-$10 per linear foot; total cost could be $75-$165.