Washington WA Plumbing License Requirements and Plumber License Verification, Renewal and Application

Washington Department of Labor and Industries Plumbing Division are the ones who you must apply with to become a licensed Plumbing Contractor or Journeyman Plumber in Washington.


To find the requirements to pass their state exam, the cost of their plumber license, license exam and renewal fee, please contact them directly as it can vary from year to year. The codes and standards that currently are adopted by Washington Department of Labor and Industries Plumbing Division is the latest edition of the National Plumbing Code.

Washington Department of Labor and Industries Plumbing Division
P.O. Box 44460
Olympia, WA 98504


Click here to visit Washington Department of Labor and Industries Plumbing Division Official Website

Washington Plumbing License Links:

WA Licensing, Exams & Education

NFPA NEC: National Plumbing Code 2008

WA Plumbing Licenses & Certification

NFPA 70: 2014 National Plumbing Code

NFPA Training, Conference and Expo

NFPA Source of Safety Information

Plumbing Association

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