North Seattle plumbing / guide 11
Public Health Seattle and King County handles Seattle plumbing permits and inspections. The actual installation, replacement, alteration, and location determine what applies.
Call a plumber877-702-1610
Current program information says replacement water heaters require permits beginning July 1, 2026. A general guide cannot decide other property-specific requirements.
Have the responsible plumber identify the work accurately, name the applicant, and list product documents or drawings. Coordinate access and other trades before inspection is requested.
Learn what must remain exposed, who will meet the inspector, how corrections are communicated, and which official status closes the process.
What to observe now
Keep the notes factual. A visible clue can direct an inspection without proving what is hidden.
Name the exact fixture, equipment, piping, location, and proposed change.
Identify the licensed party responsible for the filing and its accuracy.
Confirm drawings, product specifications, license data, and property authorization.
Do not cover required work before the authority records the appropriate result.
Obtain the official record instead of treating normal operation as approval.
Responsibility
Closeout record
Store the application, issued permit, request, result, correction, reinspection, and final record with the signed scope and installed product information.
Current primary sources
Public procedures and status can change. Use the source that owns the decision.