Updated : 04/22/2024

Overview

Grant County, Washington, adopted the 2018 International Building Code, including Appendices C, H, and J. Grant County, WA, Muni. Code §14.04.030 (adoption) and §14.04.050 (amendments). Grant County, Washington, adopted the 2018 International Residential Code, including Appendices F, Q, and U. Grant County, WA, Muni. Code §14.04.030 (adoption) and §14.04.050 (amendments). No local adoption of the International Existing Building Code (IEBC) was found in the municipal code; however, Washington 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, and Grant County, WA, Muni. Code §14.04.030 (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 Grant County, 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.

Grant 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.

Auto Search - beta:

2021 Washington State Residential Code (2021 IRC)(Grant County, WA 14.04.050 - Amendments to the International Building Code, International Fire Code, and the International Residential Code.)

...hear and decide appeals of orders, decisions or determinations made by the Building Official relative to the application and interpretation of the Washington State Building Code, there shall be and is hereby created an appeals process. 1. Appeals. Any person, firm or corporation that feels they have been the...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Grant County ? No
Comments:

No amendment to the IRC Table 301.2 was located in the municipal code. However, climate design criteria were located on the Grant County website. 

Snow Load: Ground 30 and Roof 20

Wind Speed: IRC 110 ultimate speed and Commercial IBC section 1609.

Seismic Design Category: IRC C and Commercial IBC section 1613.

Weathering: Moderate

Frost Line Depth: 18"

Termite: Slight to Moderate

Decay: None- Slight

Winter Design Temp: WSEC- Climate Zone 5

Ice Shield Underlayment Required: No

Flood Hazard: FEMA Maps

Air Freeze Index: 1,200

Mean Annual Temp: 50

Grant County, WA, "Design Criteria & Handouts" Grants County Building Division. Accessed October 12, 2023. www.grantcountywa.gov/832/Design-Criteria-Handouts.

Comments

Grant County, Washington, adopted the 2018 International Residential Code, including Appendices F, Q, and U. Grant County, WA, Muni. Code §14.04.030 (adoption) and §14.04.050 (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 local adoption of Appendix J was found in the municipal code or city website. 

No local adoption of the International Existing Building Code (IEBC) was found in the municipal code; however, Washington 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, and Grant County, WA, Muni. Code §14.04.030 (adoption).

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

Grant 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:

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

...Adoption not found...

. Wisconsin Commercial Bldg. Code (2015 IBC)(Grant County, WA Municipal Code)

...Adoption not found...

Comments

Grant County, Washington, adopted the 2018 International Building Code, including Appendices C, H, and J. Grant County, WA, Muni. Code §14.04.030 (adoption) and §14.04.050 (amendments). 

Existing Buildings

No local adoption of the International Existing Building Code (IEBC) was found in the municipal code; however, Washington 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, and Grant County, WA, Muni. Code §14.04.030 (adoption).

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