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Existing Building Code

See also: Building Code

What Is It?

The Seattle Existing Building Code (SEBC) provides minimum requirements for repair, alteration, change of occupancy, addition, and relocation of existing buildings. Seattle has adopted the 2015 International Existing Building Code, with amendments specific to our city.

What It Isn't

This code does not cover the design and construction of new buildings. Those regulations are found in the Seattle Building Code. This code also does not cover regulations for single-family houses, duplexes, and townhouses with up to three stories and separate entrances. Those regulations are found in the Seattle Residential Code.

Read the Code


2015 Seattle Existing Building Code

2012 Seattle Existing Building Code

This is a read-only version of the 2012 Seattle Existing Building Code. You can buy a full version from iccsafe.org.

Previous Versions

Purchase Codes

Recent Changes

As of January 1, 2017, you must design your Seattle projects using the 2015 Seattle Existing Building Code. We expect electronic versions of the codes will be available on our web site, and print versions available through our Public Resource Center by February 28, 2017.

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