Updated : 04/22/2024

Overview

Olympia, Washington, adopted the 2018 International Residential Code, including Appendices F, Q, and U, with amendments. Olympia, WA, Muni. Code § 16.04.020 (adoption) and § 16.04.040 (amendments). Olympia, Washington, adopted the 2018 International Building Code, including Appendices E, G, and J, with amendments. Olympia, WA, Muni. Code § 16.04.020 (adoption) and § 16.04.040 (amendments). Olympia, Washington, adopted the 2018 International Existing Building Code, including Appendix A. Olympia, WA, Muni. Code § 16.04.020 (adoption) and § 16.04.040 (amendments).

Olympia, Washington adopted the Washington State Building Codes. Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes, and Revised Code of Wash. § 19.27.031 (statewide code effective in all counties and cities). 

Helpful resources for Olympia, Washington include the following.

• PLRB, Ordinance and Law Coverage Discussion for Washington

Residential Building Code

Washington adopted a statewide mandatory residential code that will control; however, local governments are free to make laws more strict (with some limitations).See PLRB, Washington Building Codes for more information on state level codes.

Olympia adopted the 2018 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

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2018 Washington State Residential Code (2018 IRC)(City of Olympia, WA Municipal Code)

...Adoption not found...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Olympia ? No
Comments:

The adoption of the residential code included an amendment stating that ice barrier underlayment is not required at the eaves.

Climate and Geographic Design Criteria

IRC Table R301.2(1)

Roof Snow Load: 25

Wind Speed (mph): 110

Seismic Design Category: D1

Weathering: Moderate

Front Line Depth: 12"

Termite: Slight to Moderate

Winter Design Temp: 17º 

Ice Shield Underlayment Required: No

Flood Hazards: Sept 1, 2016

Air Freezing Index: 170º

Mean Annual Temp: 51º

Note that the municipal code has "Front Line Depth" instead of "Frost Line Depth". 

Olympia, WA, Muni. Code § 16.04.040(B3) (amendments).

Government Officials

Comments

Olympia, Washington, adopted the 2018 International Residential Code, including Appendices F, Q, and U, with amendments. Olympia, WA, Muni. Code § 16.04.020 (adoption) and § 16.04.040 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

No adoption of Appendix J regarding existing structures was found in the municipal code. 

Olympia, Washington, adopted the 2018 International Existing Building Code, including Appendix A. Olympia, WA, Muni. Code § 16.04.020 (adoption) and § 16.04.040 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Commercial Building Code

Olympia adopted the 2018 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about amendments to the model code here.

Auto Search - beta:

2018 Washington State Building Code (2018 IBC)(City of Olympia, WA Municipal Code)

...Adoption not found...

Comments

Olympia, Washington, adopted the 2018 International Building Code, including Appendices E, G, and J, with amendments. Olympia, WA, Muni. Code § 16.04.020 (adoption) and § 16.04.040 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Existing Buildings

Olympia, Washington, adopted the 2018 International Existing Building Code, including Appendix A. Olympia, WA, Muni. Code § 16.04.020 (adoption) and § 16.04.040 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRB, Washington Building Codes.

Other Building Codes