Updated : 04/22/2024

Overview

Lynden, Washington, adopted the 2018 International Building Code (IBC). Lynden, WA, Muni. Code §15.02.010 (adoption). Lynden, Washington, adopted the 2018 International Residential Code (IRC). Lynden, WA, Muni. Code §15.04.010 (adoption). Lynden, Washington, adopted the 2018 International Existing Building Code (IEBC). Lynden, WA, Muni. Code §15.03.010 (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 Lynden, Washington include the following.

• Jurisdiction's Information Page(s):
  • Lynden, 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.

Lynden 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 the adoption without amendment to the model code here.

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2021 Washington State Residential Code (2021 IRC)(Lynden, WA 15.04.010 - International Residential Code (IRC)—Adoption.)

...twenty square feet of floor area.). The city further adopts any future amendments to the International Residential Code, effective upon its adoption by the State Building Code Council. (Ord. 1195 § A(part), 2004)....

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Lynden ? Unclear
Comments:

No amendment to the IRC Table 301.2 was located in the municipal code. However, a climate design criteria is located on the Lynden city website. Lynden, WA, “Building Design Criteria.” City of Lynden Building Division. Accessed October 16th, 2023. https://www.lyndenwa.org/DocumentCenter/View/277/Lynden-Building-Criteria-PDF. Note that the design criteria do not clarify if Ice barrier underlayment is required.

Design Parameter

1. Seismic Design Category – D1 – IBC 1613

2. Risk Category “2” – IBC 1604.5

3. Wind exposure Category “B” – IBC 1609.4.3

4. Basic Wind Speed (3 Sec. Gust) 110 mph. – IBC 1609.3(1)

5. Design Wind Load 16.00 PSF ASCE 7-16 28.61 

Lynden, WA, “Building Design Criteria.” City of Lynden Building Division. Accessed October 16th, 2023. https://www.lyndenwa.org/DocumentCenter/View/277/Lynden-Building-Criteria-PDF.

Government Officials

Comments

Lynden, Washington, adopted the 2018 International Building Code (IBC). Lynden, WA, Muni. Code §15.02.010 (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

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.

Lynden, Washington, adopted the 2018 International Existing Building Code (IEBC). Lynden, WA, Muni. Code §15.03.010 (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.

Commercial Building Code

Lynden adopted the 2018 IBC, 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 code here.You can find information about amendments to the model code here.

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

...Adoption not found...

Comments

Lynden, Washington, adopted the 2018 International Residential Code (IRC). Lynden, WA, Muni. Code §15.04.010 (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

Lynden, Washington, adopted the 2018 International Existing Building Code (IEBC). Lynden, WA, Muni. Code §15.03.010 (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