Updated : 04/22/2024

Overview

Franklin County, Washington, adopted the 2018 International Residential Code, including Appendices G, H J, and T, with amendments. Franklin County, WA, Muni. Code §15.12.030 (adoption and amendments). Franklin County, Washington, adopted the 2018 International Building Code, including Appendices C, D, E, H, I, and J, with amendments. Franklin County, WA, Muni. Code §15.12.020 (adoption and 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. See PLRB, Washington 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. 

Helpful resources for Franklin County, Washington include the following.

• Jurisdiction's Information Page(s):
  • Franklin County, 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.

Franklin County adopted the 2018 IRC, statewide. 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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2021 Washington State Residential Code (2021 IRC)(Franklin County, WA 15.12.190 - Fees.)

...State Building Code Council (SBCC)—Residential building permits $6.50 for each building permit, plus an additional surcharge of $2.00 for each residential unit after the first unit (or as amended by the State Building Code Council)...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Franklin County ? Unclear
Comments:

No amendment to the IRC Table 301.2 was located in the municipal code. However, a climate design criteria was located on the Franklin County website. Please Note that the climate design criteria do not address ice barrier underlayment requirements. Franklin, WA "Current Climatic and Geographic Design Criteria." 343 Ordinance No.2021-03.

General Design Criteria Roof Snow Load 20 psf, (min. roof live load is 20 psf)

Max Wind Speed and Exposure: 115 mph and Exposure C (Based upon greatest ultimate design wind speed)

Seismic Design Category; C

Weathering; Severe

Frost Line Depth; 24 inches

Termite Damage: Slight to Moderate

Decay Damage: None

Mean Annual Design Temp; 50’ F

Winter: 11’ F

Summer: 101’F

Summer Degree Range: 30’ F (change)

Yearly Degree Average: 53.9’ F

Heating Degree Days: 4895

Cooling Degree Days: 830

Average # of Clear Days: 225 (occurs primarily April 1 to November 1)

Air Freezing Index" 808 Elevation above sea level 350 fee

Franklin, WA "Current Climatic and Geographic Design Criteria." 343 Ordinance No.2021-03. https://www.franklincountywa.gov/DocumentCenter/View/343/Current-Climatic-and-Geographic-Design-Criteria-2018-IRC-and-2018-IBC-PDF.

 

 

 

 

Comments

Franklin County, Washington, adopted the 2018 International Residential Code, including Appendices G, H J, and T, with amendments. Franklin County, WA, Muni. Code §15.12.030 (adoption and 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.

Franklin, Washington, adopted Appendix J regarding existing buildings. Franklin County, WA, Muni. Code §15.12.030 (adoption).

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 PLRB, Washington Building Codes. 

Note that the 2015 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

Franklin 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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2021 Washington State Building Code (2021 IBC)(Franklin County, WA Municipal Code)

...Adoption not found...

Comments

Franklin County, Washington, adopted the 2018 International Building Code, including Appendices C, D, E, H, I, and J, with amendments. Franklin County, WA, Muni. Code §15.12.020 (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. 

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. See PLRB, Washington Building Codes. 

Note that the 2015 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