What should I do to prepare for the replacement of the water supply system?

What should I do to prepare for the replacement of the water supply system?

The first step in preparation is to remove all items under each sink. Remove all items in the shower or bathtub area. Identify all areas where the wall cuts may occur. Then remove any furniture in that area. Next will be the attic entrance. This is usually congested with storage items or equipment. Some or all will have to be moved.