Seattle, Washington Building Codes

Building Codes References

• Washington has adopted a statewide building code, [State Building Code (SBC)]. The SBC is incorporated in the Washington Administrative Code (WAC). Seattle has amendments to the state code.
The adoption of the 2009 International Building, Residential, Mechanical and Fire Codes and the 2009 Uniform Plumbing Code, with state amendments, will be effective on July 1, 2010, along with amendments to the Washington State Energy Code.
Code TypeCode ModelAmendment Contact
Building/Dwelling CodeIBC 2006 (State Building Code, WAC Chapter 51-50)Dept. of Planning & Development (DPD), Applicant Services Center (206) 684-8850
Structural CodeIBC 2006 (State Building Code, WAC Chapter 51-50)Dept. of Planning & Development (DPD), Applicant Services Center (206) 684-8850
Plumbing CodeUPC 2006 (State Building Code, WAC Chapter 51-56 and 51-57)Dept. of Planning & Development (DPD), Applicant Services Center (206) 684-8850
Mechanical CodeIMC 2006 (State Building Code, WAC Chapter 51-52)Dept. of Planning & Development (DPD), Applicant Services Center (206) 684-8850
Electrical CodeNEC 2005 with Seattle AmendmentsElectrical Counter
(206) 684-8464
Accessibility CodeIBC 2006 with State AmendmentsOnline
Energy Code2004 Seattle Energy CodeOnline
Elevator CodeAMSE A17.1-2004Online
Other CodesFuel Gas: IFCG 2006 with Seattle Amendments

Authorities Having Jurisdiction (AHJ)

Authorities Having Jurisdiction are those government officials who are the final authority on questions in a particular area (or jurisdiction).
Jurisdictional AreaContact
StructuralTechnical Code Support
Dept. of Planning & Development
Phone: (206) 684-4630
PlumbingSeattle/King County Health Department
Phone: (206) 233-2621
MechanicalEnergy/Mechanical Technical Code Support
Phone: (206) 684-7846
ElectricalTechnical Code Support
Dept. of Planning & Development
Phone: (206) 684-5383
AccessibilityTechnical Code Support
Phone: (206) 684-4630
Historic PreservationDepartment of Neighborhoods
Phone: (206) 684-0464
EnvironmentalLand Use Technician
Phone: (206) 684-8850
Fire MarshalFire Marshal's Office
Phone: (206) 386-1164
Fax: (206) 386-1348
CivilDrainage Review Desk (DPD)
Phone: (206) 684-5362
ZoningLand Use Technician
Phone: (206) 684-8850
PlanningLand Use Technician
Phone: (206) 684-8850
City AttorneyLaw Department
Phone: (206) 684-8200
Public WorksSeattle Public Utilities
Phone: (206) 684-3000
Parks/RecreationSeattle Parks and Recreation Department
Phone: (206) 684-4075
Washington building code
Washington Cities Codes
Building codes are also available for these other Washington municipalities: