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Walla Walla County, Washington Building Codes

Updated : 04/22/2024

Overview

Walla Walla County, Washington, adopted the "Current" International Residential Code (IRC), including Appendix G, with amendments. Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption), § 15.04.040 (local adoption) and §§ 15.04.050-15.04.080 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes. Walla Walla County, Washington, adopted the "Current" International Building Code (IBC), including Appendices C and J, with amendments. Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption), § 15.04.040 (local adoption), §§ 15.04.050-15.04.080 (amendments), and §§ 15.04.400-15.04.440 (appendix J amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes. Walla Walla County, Washington, adopted the "Current" International Existing Building Code (IEBC). Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption). Note that Washington adopted the 2015 IEBC, by amending the reference to the IEBC in Section 101.4.7 of the 2018 IBC. The 2015 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes, and Wash. Admin. Code § 51-50-007

Helpful resources for Walla Walla County, Washington include the following.

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.

Walla Walla County 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 Walla Walla, WA Municipal Code)

...Adoption not found...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Walla Walla County ? Yes
Comments:

The adoption of the residential code included an amendment stating that ice barrier underlayment is required at the eaves.

A. An ice shield will be required to be installed at the time of a reroof on all roofs with a pitch of five to twelve or less.

B. A new home will require an ice shield on all roofs with a pitch of four to twelve or less.

 Walla Walla County, WA, Muni. Code § 15.04.070 (Additional roofing requirements).

Comments

Walla Walla County, Washington, adopted the "Current" International Residential Code (IRC), including Appendix G, with amendments. Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption), § 15.04.040 (local adoption), and §§ 15.04.050-15.04.080 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington 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 was found in the municipal code. 

Walla Walla County, Washington, adopted the "Current" International Existing Building Code (IEBC). Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption). Note that Washington adopted the 2015 IEBC, by amending the reference to the IEBC in Section 101.4.7 of the 2018 IBC. The 2015 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes, and Wash. Admin. Code § 51-50-007

Commercial Building Code

Walla Walla County 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 Walla Walla, WA Municipal Code)

...Adoption not found...

Comments

Walla Walla County, Washington, adopted the "Current" International Building Code (IBC), including Appendices C and J, with amendments. Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption), § 15.04.040 (local adoption), §§ 15.04.050-15.04.080 (amendments), and §§15.04.400-15.04.440 (appendix J amendments).

Existing Buildings

Walla Walla County, Washington, adopted the "Current" International Existing Building Code (IEBC). Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption). Note that Washington adopted the 2015 IEBC, by amending the reference to the IEBC in Section 101.4.7 of the 2018 IBC. The 2015 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes, and Wash. Admin. Code § 51-50-007

Other Building Codes

Walla Walla County, Washington, adopted the 2009 ICC/ANSI A117.1 Accessible and Usable Buildings and Facilities. Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption).

Walla Walla County, Washington, adopted the "Current" International Mechanical Code (IMC). Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption) and § 15.04.090 (adoption). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes

Walla Walla County, Washington, adopted the Liquefied Petroleum Gas Code (NFPA 58). Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption). 

Walla Walla County, Washington, adopted the National Fuel Gas Code for LP Gas (ANSI Z223/NFPA 54). Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption). 

Walla Walla County, Washington, adopted the "Current" International Fuel Gas Code. Walla Walla County, WA, Muni. Code § 15.04.030 (state code adoption). 

Walla Walla County, Washington, adopted the "Current" International Fire Code, including Appendices B, C, and D, with amendments. Walla Walla County, WA, Muni. Code § 15.04.140 (adoption) and §§ 15.04.141-15.04.143 (amendments). Note that the 2018 edition is the current effective code until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes

Walla Walla County, Washington, adopted the "Current" Uniform Plumbing Code. Walla Walla County, WA, Muni. Code § 15.04.150 (adoption). 

Walla Walla County, Washington, adopted the "Current" IECC/ Washington State Energy Code. Walla Walla County, WA, Muni. Code § 15.04.210 (adoption). 

Walla Walla County, Washington, adopted the adopted the 2020 National Electrical Code (NEC). See Labor & Industries (L&I), “Electrical Laws, Rules & Policies.” Licensing & Permits, Lni.wa.gov (state adoption and amendments).

Note that the above codes are the current effective codes until March 15, 2024, when the 2021 edition will become effective. See PLRBWashington Building Codes.