Washington Building Code

Washington Building Code, Permit and Licensing Information

Updated: 5/23/21

Washington Construction Code Agency:

Washington Building Code Council

1500 Jefferson St SE, Olympia, WA 98501
Phone: 360-407-9277
https://www.sbcc.wa.gov/about-sbcc/contact-us

Department of Labor and Industries, Electrical Division 
P.O. Box 44000
Olympia, WA 98504
(360) 902-5800

Notes: The Department of Labor and Industries is in the process of updating the Washington Administrative Code (WAC) 296-46B, Electrical Safety Standards, Administration, and Installation rules to the NEC-2020, to be effective November 1, 2020.

Washington Construction Codes and Edition Adopted:

  • The IBC, IRC, IFC, IMC, and IFGC codes are named by Washington statute and required to be adopted.
    • 2018 International Building Code
    • 2018 Washington State Energy Code based on the 2018 International Energy Conservation Code
    • 2020 National Electric Code (NEC)
    • 2018 International Fire Code
    • 2018 International Fuel Gas Code
    • 2018 International Mechanical Code
    • 2018 International Residential Code
    • 2018 International Wildland-Urban Interface Code
    • 2018 International Existing Building Code
    • 2018 International Swimming Pool and Spa Code

Applicability (statewide, local, limited): STATEWIDE

Building codes are adopted in Washington by statute. The Washington State Building Code Council has authority to adopt amendments to these codes for statewide application.

See a Statewide List of Building Codes here.

State Website https://www.state.wa.us/
State Licensing Contractor licensing is required by the State of Washington.  A license is required for plumbing, and electrical trades. Businesses must register with the Secretary of State.
State Building Code 2018 International Building Code – This code also includes amendments for the 2018 International Existing Building Code.  Adopted July 26, 2019; Effective July 1, 2020

2018 International Building Code (Pt. 2) –  Correlation issues on stair pressurization and smoke control. Adopted November 8, 2019; Effective July 1, 2020

2018 International Fire Code  – Adoption and amendment of the 2018 International Fire Code.
Adopted July 26, 2019; Effective July 1, 2020

2018 International Fire Code (Pt. 2) – Correlation of existing state amendments and 2018 IFC language. Adopted November 8, 2019; Effective July 1, 2020

2018 Washington State Energy Code – Commercial – Link to pdf language.
Adopted July 26, 2019; Effective July 1, 2020

2018 Washington State Energy Code – Residential – Link to pdf language.
Adopted November 8, 2019; Effective July 1, 2020

2018 International Residential Code – Proposed changes to the 2018 IRC, including adoption of a modified Appendix Q for tiny houses. Link to be posted shortly.
Adopted November 8, 2019; Effective July 1, 2020

2018 International Mechanical Code – Proposed changes to the 2018 IMC, including revised requirements for whole-house ventilation. (Link is currently to the proposed code amendments. Final adopted version to be posted shortly.) Adopted November 8, 2019; Effective July 1, 2020

2018 Uniform Plumbing Code – Proposed changes to the 2018 UPC, including new requirements for water conserving fixtures. (Link is currently to the proposed code amendments. Final adopted version to be posted shortly.) Adopted November 8, 2019; Effective July 1, 2020

State Licensing Division https://www.dol.wa.gov/

https://wws2.wa.gov/lni/bbip/contractor.asp

State Fire Marshall https://www.wsp.wa.gov/fire/firemars.htm
State Environmental Permit https://www.ecy.wa.gov/
Washington Building Code by County
Washington Construction Code by County

Additional Building Codes by State

Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

 


Type
Code Title
Code Adopted
Technical Bases
Applicability
Building
Building Code
2018 International Building Code with Washington Amendments. Adopted July 26, 2019; Effective July 1, 2020This code also includes amendments for the 2018 International Existing Building Code. Adopted July 26, 2019; Effective July 1, 2020
2018 International Building Code
This code also includes amendments for the 2018 International Existing Building Code
Building
Residential Code
201
2015 IRC
Fire
Fire Code
2015
2015 IFC
Electrical
Electric Code
2014
2014 NEC
Mechanical
Mechanical Code
2015
2015 IMC
Plumbing
Plumbing Code
No Statewide Standard, State or Local Adoption of Editions of Code
Plumbing
Private Sewage Disposal Code
Not Adopted
Fire
Fuel and Gas Code
2015
2015 IFGC
Green
Green Construction Code
No Statewide Standard, State or Local Adoption of Editions of Code
Energy
Energy Conservation Code
2015
2015 IECC
Building
Property Maintenance Code
No Statewide Standard, State or Local Adoption of Editions of Code
Building
Existing Buildings Code
2015
2015 IEBC
Plumbing
International Swimming Pool and Spa Code (ISPSC)
2015
2015 ISPSC
Accessibility
Accessibility Code
Fire
Wildfire/Wildlife Urban Interface Code
18
18 IWUIC
Zoning
Zoning Code
Not Adopted
Fire
Fire Life Safety Code

Washington State Building Code Council

State Building Code Council 210 11th Avenue SW Olympia,  WA   98504
Website: https://www.sbcc.wa.gov/
Email: SBCC@GA.WA.GOV
Phone: 360-902-7293
Fax: 360-586-0493


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