If you are planning a major kitchen renovation, than you may eventually need a plumber. Kitchen plumbing may need to take place throughout the renovating process. Be sure to work closely with your plumber and ensure that he sees the final floor plan before the remodel begins. This way he or she can forewarn you of any potential problems. Let him or her know where the pipes and outlets are. This will make their job easier and make it cheaper for you if you are paying by the hour.
Also, schedule a meeting and discuss the use of alternative systems such as hot water services that are solar based and taps that help save water. After you have all structural work done, call your plumber and have him install or move any pipes. At the very end of the kitchen renovation, have your plumber put in any major appliances, such as dishwashers and sinks.