Updated : 04/22/2024

Overview

Duvall, Washington, adopted the 2018 International Residential Code, including Appendix A, B, C, G, H, J, and K, with amendments. Duvall, WA, Muni. Code §10.01.040 (adoption) and §10.01.110 (amendments). Duvall, Washington, adopted the 2018 International Building Code, including Appendix I, E, and J, with amendments. Duvall, WA, Muni. Code §10.01.040 (adoption) and §10.01.100 (amendments). Duvall, Washington, adopted the 2018 International Existing Building Code. Duvall, WA, Muni. Code §10.01.040 (adoption). 

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.

Helpful resources for Duvall, Washington include the following.

• Jurisdiction's Information Page(s):
  • Duvall, Washington Municipal Code
• 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.

Duvall 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.

Auto Search - beta:

2021 Washington State Residential Code (2021 IRC)(Duvall, WA 10.01.120 - International Fire Code.)

...The 2021 Edition of the International Fire Code, as published by the International Code Council and adopted by the State Building Code Council in Chapter 51-54A WAC, is adopted by reference. The City also adopts International Fire Code Appendix B, Fire-Flow Requirements for Buildings, Appendix C...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Duvall ? Unclear
Comments:

The adoption of the residential code included an amendment to table 301.2 regarding ice barrier underlayment requirements; however, it is not entirely clear what the city means by "None". 

Ground snow load	25#
Wind Speed	85 mph
Seismic design	D-2
Weathering	moderate
Frost line depth	12"
Termite	slight to moderate
Winter design temp	26 degrees F
Ice Shield	none
Flood Hazards	DMC 14.84
Air freezing index	113
Mean annual temperature	51.2 degrees F

Duvall, WA, Muni. Code §10.01.110(2) (amendments).

Comments

Duvall, Washington, adopted the 2018 International Residential Code, including Appendix A, B, C, G, H, J, and K, with amendments. Duvall, WA, Muni. Code §10.01.040 (adoption) and §10.01.110 (amendments).

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.

Duvall, Washington, adopted Appendix J regarding existing buildings. Duvall, WA, Muni. Code §10.01.040 (adoption).

Duvall, Washington, adopted the 2018 International Existing Building Code. Duvall, WA, Muni. Code §10.01.040 (adoption). 

Commercial Building Code

Duvall 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:

2021 Washington State Building Code (2021 IBC)(Duvall, WA Municipal Code)

...Adoption not found...

Comments

Duvall, Washington, adopted the 2018 International Building Code, including Appendix I, E, and J, with amendments. Duvall, WA, Muni. Code §10.01.040 (adoption) and §10.01.100 (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

Duvall, Washington, adopted the 2018 International Existing Building Code. Duvall, WA, Muni. Code §10.01.040 (adoption). 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