Adopted Codes


As of February 1, 2021, the City of Sammamish will be using a new set of codes as required by State Law (RCW 19.27)

The State Building Code Council has adopted the editions of the codes, as shown below, with the noted amendments. These codes went into effect February 1, 2021.

This is the State’s year to introduce the Washington State model codes (as shown in photos above). The model codes are the 2018 International code with the Washington Amendments incorporated.

Which codes are in effect?

2018 International Building Code – WAC 51-50

2018 International Residential Code – WAC 51-51

2018 International Mechanical Code – WAC 51-52

2018 NFPA 54, National Fuel Gas Code – WAC-51-52-21000

2017 Edition of NFPA 58, Liquified Petroleum Gas Code – WAC 51-52

2018 International Fuel Gas Code – WAC 51-52

2018 International Fire Code – WAC 51-54A

2018 Uniform Plumbing Code & Standards – WAC 51-56 and WAC 51-57

2018 Washington State Energy Code -WAC 51-11C and WAC 51-11R

2018 International Existing Building Code – WAC 51-50-480000

2018 International Swimming Pool and Spa Code – WAC 51-50-3109

2020 Sammamish Electrical Code – Sammamish Ordinance 02017-440; RCW 19.28


Where can I view/purchase these codes?

A variety of sources to purchase these codes are available on-line. They are also available for purchase directly through the Washington Association of Building Officials book store. Copies of the codes are always available for viewing at City Hall. Also, many local libraries keep copies of current "standard codes" (though these may not include local amendments).

What about code amendments?

Washington State amendments can be downloaded for free at State amendments are also available for purchase in hard copy through the WABO book store.

City of Sammamish amendments are currently available for free on-line. See Sammamish Municipal Code, Title 16 for adoption of the new codes and associated local amendments.

The following documents are frequently referenced excerpts of the Sammamish Municipal Code identified by topic.

Hours of Construction (SMC 16.05.030)

Referenced Codes (SMC 16.05.040)

Automatic Sprinkler System Required (16.05.130 (16))

Sammamish Construction Administrative Code (SMC 16.20)

Sammamish International Building Code Amendments (SMC 16.05.070)

Sammamish International Residential Code Amendments (SMC 16.05.080)

Sammamish International Mechanical Code Amendments (SMC 16.05.090)

Sammamish International Fuel Gas Code Amendments (SMC 16.05.120)

Sammamish International Fire Code Amendments (SMC 16.05.130)

Sammamish Uniform Plumbing Code Amendments (SMC 16.05.140)

Sammamish Building & Property Maintenance Code (SMC 16.25)

Sammamish Moving Buildings Requirements (SMC 16.10)

Sammamish Flood Damage Prevention (SMC 15.10)

Sammamish Electrical Code (SMC 16.05.153)


Is there training available?

Yes! The Washington Association of Building Officials (WABO) "Education" website and the International Code Council (ICC) "Training" website are good sources of information. You can also go to and click on "News and Events" for all the most current code related news.

In order for this transition to be as smooth and seamless as possible we need you to do your part to be prepared as well. Please take advantage of training opportunities available and purchase/reference the current code books and amendments that will affect your project(s). If you have any questions or concerns along the way, please do not hesitate to contact us. We are happy to be of assistance!

We look forward to working with you!