Plumbing Contractor’s licenses are now required for all plumbing permits. If you are having trouble applying for plumbing permits in MBP, please verify that your company is registered as a Plumbing Contractor in L&I. Please contact L&I to request changes to your company information at 360-902-5800.

Welcome to's Application Portal
- Visit our help page to learn more about the application process

Log In

First time user? Register now
Can't access your account? Click here
Need help? Click here