Building Codes & Design Info

Building Codes adopted by the City of Edmonds as of 3/15/2024 as amended by the State of Washington Building Code Council (SBCC).

The 2021 Codes and Amendments have been adopted and went into effect March 15, 2024.

See link below for amendments specific to the Edmonds Community Development Code (ECDC).

2021 WS Building Code (IBC)

2021 WS Residential Code (IRC)

2021 WS Mechanical Code (IMC)

2021 WS Fuel Gas Code (IFGC)

2021 WS Fire Code (IFC)

2021 WS Existing Building Code (IEBC)

2021 International Property Maintenance Code

2021 ICC Performance Code

2021 Washington State Energy Code

2021 Uniform Plumbing Code (UPC)

Edmonds Community Development Code Title 19

WA State Amendments to ICC Codes as applicable

Electrical permits are administered by WA State Dept. of L&I. The edition of the National Electrical Code in effect is that which is currently adopted by the State.

  • The International Code Council promulgates the International Codes that form the basis for building codes in Washington State and the City of Edmonds. Visit their site to explore the national code development process.

  • In Washington the State Building Code Council is charged with the adoption and amendment of the International Codes. The council was created by the State Legislature in 1974 and given authority from RCW 19.27.

  • A good source of code books and other code related publications is the Washington Association of Building Officials Bookstore. You can also check the WABO website to check for training opportunities, resources and to see what is happening within the state building code world.

  • The State Energy Codes. A very good source of information on energy codes with some very useful publications is the WSU Energy Extension.


Min. Roof Snow Load 25 psf (non-reducible)
Ground Snow Load 25 psf (non-reducible)
Seismic Design Category D1 (Residential) / Category D (Commercial)
Wind Speed 98 mph
Wind Exposure B,C & D (varies with location contact plan review staff)
Winter Design Temp 27 degrees F (-3 degree C)
Mean Annual Temp 50 degrees F (10 degree C)