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US flag Seattle, Washington Building Codes

Project Information
Click here to get information about construction activity in Seattle Washington by project type
 | Building Codes

Additional Resources

Below you can find links to Building Codes and Authorities Having Jurisdiction for Seattle, Washington.

This information is obtained directly to the source -- the city, county and state building departments that issue these codes. If you find an error, please send an e-mail with the updated information to RCDWebmaster@ReedBusiness.com.

• 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.

Seattle Washington Building Codes

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
Fire/Life Safety CodeIFC 2006 (State Building Code, WAC Chapter 51-54Dept. of Planning & Development (DPD), Applicant Services Center (206) 684-8850
Accessibility CodeIBC 2006 with State AmendmentsOnline
Energy Code2004 Seattle Energy CodeOnline
Elevator CodeAMSE A17.1-2004Online
Other CodesFuel Gas: IFCG 2006 with Seattle Amendments

Washington 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
CivilDrainage Review Desk (DPD)
Phone: (206) 684-5362
AccessibilityTechnical Code Support
Phone: (206) 684-4630
Historic PreservationDepartment of Neighborhoods
Phone: (206) 684-0464
ZoningLand Use Technician
Phone: (206) 684-8850
PlanningLand Use Technician
Phone: (206) 684-8850
EnvironmentalLand Use Technician
Phone: (206) 684-8850
City AttorneyLaw Department
Phone: (206) 684-8200
Public WorksSeattle Public Utilities
Phone: (206) 684-3000
Fire MarshalFire Marshal's Office
Phone: (206) 386-1164
Fax: (206) 386-1348
Parks/RecreationSeattle Parks and Recreation Department
Phone: (206) 684-4075

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Other Washington Municipalities

Building codes are also available for the following municipalities within Washington:

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