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Plumbing and gas piping code books and information
Access guidelines to make sure that your project design is code compliant and will pass inspection.
Code-related information and publications
Washington Association of Building Officials
Code books and code information
International Code Council
Code books and code information
Seattle Department of Construction & Inspections
Seattle building and mechanical permits
Washington State Dept. of Labor and Industries
Contractor registration and plumbing installer certification
King County Parcel Viewer
Find tax parcel numbers and addresses
King County Department of Local Services, Permitting Division
King County building and mechanical permits
Seattle Public Utilities
Sewer and water utilities
Seattle Side Sewer Cards
Property sewer locations and connections
Other Seattle Codes
Important Seattle codes such as: mechanical, building, land use, and more.