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Douglas County, Washington Building Codes

Updated : 04/22/2024

Overview

Douglas County, Washington, adopted the 2018 International Residential Code, including Appendices F, Q, and U. Douglas County, WA, Muni. Code §15.08.010 (adoption) and §15.08.025 (amendments). Douglas County, Washington, adopted the 2018 International Building Code, including Appendix E. Douglas County, WA, Muni. Code §15.08.010 (adoption) and §15.08.020 (amendments). No local adoption of the International Existing Building Code (IEBC) could be found in the municipal code. Note that the state adopted the 2015 IEBC, by amending the reference to the IEBC in Sec. 101.4.7 of the 2018 IBC. Wash. Admin. Code § 51-50-007.

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

Helpful resources for Douglas 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.

Douglas 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)(Douglas County, WA Municipal Code)

...Adoption not found...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Douglas County ? Yes
Comments:

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

Table R301.2(1) Climatic and geographic design criteria.

Snow Load: Min. 35PSF

Wind Speed (mph): 85mph

Seismic Design Category: C

Weathering: Severe

Frost Line Depth: 24"

Termite: Slight to Moderate

Decay: None to Slight

Winter Design Temp: 5º

Ice Shield Underlayment Required: Yes

Flood Hazard: Yes

Air Freezing Index: 1060

Mean Annual Temp: 51.5º

Douglas County, WA, Muni. Code §15.16.005 (design criteria).

Government Officials
Last Name First Name Title E-mail Phone Note
Land Services Phone 509-884-7173

Comments

Douglas County, Washington, adopted the 2018 International Residential Code, including Appendices F, Q, and U. Douglas County, WA, Muni. Code §15.08.010 (adoption) and §15.08.025 (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 regarding existing buildings was located in the municipal code or city website. 

No local adoption of the International Existing Building Code (IEBC) could be found in the municipal code. Note that the state adopted the 2015 IEBC, by amending the reference to the IEBC in Sec. 101.4.7 of the 2018 IBC. See PLRBWashington Building Codes

Commercial Building Code

Douglas 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.

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2018 Washington State Building Code (2018 IBC)(Douglas County, WA Municipal Code)

...Adoption not found...

Comments

Douglas County, Washington, adopted the 2018 International Building Code, including Appendix E. Douglas County, WA, Muni. Code §15.08.010 (adoption) and §15.08.020 (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

No local adoption of the International Existing Building Code (IEBC) could be found in the municipal code. Note that the state adopted the 2015 IEBC, by amending the reference to the IEBC in Sec. 101.4.7 of the 2018 IBC. Wash. Admin. Code § 51-50-007. 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

Other Building Codes

Douglas County, Washington, adopted the 2018 International Mechanical Code. Douglas County, WA, Muni. Code §15.08.010 (adoption). 

Douglas County, Washington, adopted the 2018 International Fire Code, Including Appendices B, C, D, E, F, G, H, I, J, and K. Douglas County, WA, Muni. Code §15.08.010 (adoption).

Douglas County, Washington, adopted the 2018 International Wildland Urban Interface Code. Douglas County, WA, Muni. Code §15.08.010 (adoption).

Douglas County, Washington, adopted the 2015 Uniform Plumbing Code, including Appendices A, B, and I. Douglas County, WA, Muni. Code §15.08.010 (adoption). 

Douglas County, Washington, adopted the 1997 Uniform Code for the Abatement of Dangerous Buildings. Douglas County, WA, Muni. Code §15.08.010 (adoption).

Douglas County, Washington, adopted the 2018 International Energy Conservation Code, including Appendices A, B, C, and D. Douglas County, WA, Muni. Code §15.08.010 (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