Plumbing Can Be Difficult.
Whenever you are going to install, relocate or change a plumbing system, Seattle and King County plumbing code requires you to have a permit. For Homeowners Only. The permit issued to a homeowner is an authorization for the homeowner only to do the plumbing work. If a professional plumber is contracted with, that professional must apply for a contractor's plumbing permit. Plumbing systems carry drinkable water and wastewater.